var vm=new Vue({\r\n name:'root', \/\/\u7ed9\u8fd9\u91cc\u5b9e\u4f8b\u5316\u5bf9\u8c61\u53d6\u4e00\u4e2a\u540d\u5b57\uff0c\u7ec4\u4ef6\u60f3\u77e5\u9053\u662f\u54ea\u4e2a\u5b9e\u529b\u5316\u5bf9\u8c61\u8c03\u7528\u7684\u5c31\u4f7f\u7528this.$parent.$options.name\r\n\u00a0 \u00a0 \u00a0el:'#app\u2019, \u00a0 \/\/\u4e0d\u80fd\u5c06\u5bb9\u5668\u8bbe\u7f6e\u5728html\u548cbody\u6807\u7b7e\u4e0a,\u5982\u679cel\u6ca1\u58f0\u660e\u4e5f\u53ef\u4ee5\u4f7f\u7528 vm.$mount('#app')\u6765\u5b9e\u73b0\r\n\u00a0 \u00a0 \u00a0parent:baba, \/\/\u8be5\u5c5e\u6027\u4e00\u822c\u7528\u5728new Vue\u5bf9\u8c61\u4e2d\uff0c\r\n data:{ \u00a0\/\/\u5b58\u653e\u6570\u636e\r\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0str:'\u5b57\u7b26\u4e32\u6570\u636e',\r\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0arr:[ \/\/json\u6570\u636e\r\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0{name:'\u540d\u5b57',age:123},\r\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0{name:'\u540d\u5b57',age:123},\r\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0]\uff0c\r\n obj:{age:22,name:'\u5c0f\u4e48'}\r\n\u00a0 \u00a0 \u00a0},\r\n\u00a0 \u00a0 \u00a0methods:{ \u00a0\/\/\u5b58\u653e\u4e8b\u4ef6\r\n\u00a0 \u00a0 \u00a0 \u00a0 click:function(e){\r\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 console.log(this);\r\n\u00a0 \u00a0 \u00a0 \u00a0 }\r\n\u00a0 \u00a0 \u00a0},\r\n components:{},\r\n render:...,\r\n directives:...,\r\n filters:...,\r\n computed:{\r\n myname:{\r\n get(){ return this.xx },\r\n set(newValue){ this.$refs.xxx.src = newValue } \/\/\u5728\u522b\u7684\u5730\u65b9\u4fee\u6539 this.myname = 'baidu.con',newValue\u5c31\u80fd\u83b7\u53d6\u5230\u503c\r\n } \r\n },\r\n watch:{ \/\/\u76d1\u542c\u7684\u6570\u636e\u6709\u53d8\u4e3a\u5c31\u89e6\u53d1\u56de\u8c03\r\n \/\/\u9047\u5230\u590d\u5408\u578b\u6570\u636e\u63a8\u8350\u7ed3\u6784\u662f[{},{}]\r\n str:function(new_value,old_value){\r\n },\r\n arr:{\r\n handler: function (val, oldVal) { \/* ... *\/ }, \/\/\u4e0d\u8981\u4f7f\u7528\u7bad\u5934\u51fd\u6570\uff0c\u5426\u5219this\u65e0\u6cd5\u6307\u5411vue\u5bf9\u8c61\r\n deep: true \/\/\u9047\u5230\u5bf9\u8c61\u6216\u8005\u590d\u5408\u7ed3\u6784\u8981\u5f00\u542f\u6df1\u5ea6\u76d1\u542c,\u7b80\u5355\u6570\u7ec4\u4e0d\u9700\u8981\u5f00\u542f\r\n },\r\n 'obj.age':function (val, oldVal) { \/* ... *\/ },\r\n obj:[\r\n function handle1 (val, oldVal) { \/* ... *\/ },\r\n function handle2 (val, oldVal) { \/* ... *\/ }\r\n ]\r\n },\r\n\r\n\r\n \r\n \/\/\u751f\u547d\u5468\u671f\r\n beforeCreate:function(){\r\n \/\/vue\u5b9e\u4f8b\u5316\u524d\u6267\u884c\uff0cdata\u6570\u636e\u548cdom\u8fd8\u6ca1\u6709\u6570\u636e\r\n },\r\n created:function(){\r\n \/\/vue\u5b9e\u4f8b\u5316\u540e\u6267\u884c\uff0c\u5df2\u7ecf\u6709data\u6570\u636e\uff0c\u4f46\u8fd8\u6ca1\u52a0\u8f7ddom\r\n },\r\n beforeMount:function(){\r\n \/\/\u7ec4\u4ef6\u5185\u5bb9\u6e32\u67d3\u5230\u9875\u9762\u524d\u6267\u884c\uff0cdata\u6570\u636e\u6709\u4e86\uff0cdom\u8fd8\u6ca1\u5728\u9875\u9762\u4e2d\r\n }, \r\n render:function(){\r\n \/\/render\u6267\u884c\u987a\u5e8f\u662f\u5728beforeMount\u548cmounted\u4e4b\u95f4\uff0c\u5b83\u7684\u4f5c\u7528\u5c31\u662f\u628aDOM\u63d2\u5165\u5230\u9875\u9762\u4e0a\uff0c\u6240\u4ee5\u5230\u4e86mounted\u6267\u884c\u65f6\u6211\u4eec\u624d\u80fd\u770b\u89c1\u6570\u636e\r\n },\r\n mounted:function(){\r\n \/\/\u7ec4\u4ef6\u5185\u5bb9\u6e32\u67d3\u5230\u9875\u9762\u540e\u6267\u884c\uff0cdata\u548cdom\u90fd\u5728\u9875\u9762\u4e2d\u4e86\r\n },\r\n beforeUpdate:function(){\r\n \/\/\u53ea\u6709\u5f53data\u6570\u636e\u53d1\u751f\u53d8\u5316\u540e\uff0c\u4f46\u6570\u636e\u8fd8\u6ca1\u63d2\u5165\u5230dom\u7684\u65f6\u5019\u6267\u884c\r\n },\r\n updated:function(){\r\n \/\/data\u6570\u636e\u53d8\u5316\u5b8c\u6210\u5e76\u63d2\u5165\u5230dom\u4e4b\u540e\u6267\u884c\r\n },\r\n beforeDestroy:function(){\r\n \/\/\u9500\u6bc1\u4e4b\u524d\u56de\u8c03\uff0c\u4f7f\u7528vm.$destroy()\u5373\u662f\u9500\u6bc1\u4e86vm\u7ec4\u4ef6\u4e14\u5148\u89e6\u53d1beforeDestroy\u4e4b\u540e\u662f\u89e6\u53d1destroyed\r\n \r\n },\r\n destroyed:function(){\r\n \/\/\u9500\u6bc1\u540e\u56de\u8c03\uff0c\u8fd9\u91cc\u7684\u9500\u6bc1\u540e\u6570\u636e\u8fd8\u662f\u5b58\u5728\u7684\uff0c\u53ea\u662f\u4fee\u6539\u6570\u636e\u5df2\u7ecf\u65e0\u6cd5\u9a71\u52a8\u4fee\u6539\u89c6\u56fe\u53d8\u5316\u4e86\u800c\u5df2\uff0c\r\n \/\/\u4e4b\u524d\u7ed1\u5b9a\u5728dom\u7684\u4e8b\u4ef6\u4f8b\u5982click mouseenter\u7b49\u7b49\u8fd8\u662f\u6709\u6548\u7684\uff0c\u4ec5\u4ec5\u662f\u65e0\u6cd5\u9a71\u52a8\u89c6\u56fe\u53d8\u5316\u800c\u5df2\uff0c\u4e4b\u524d\u6709\u7684\u8fd8\u662f\u6709\r\n },\r\n\r\n \/\/activated\u548cdeactivated\uff0c\u53ea\u9488\u5bf9\u5f00\u542fkeep-alive\u7684\u7ec4\u4ef6\u89e6\u53d1\r\n activated:function(){\r\n console.log(\"\u8fdb\u9875\u9762\")\r\n },\r\n deactivated:function(){\r\n console.log(\"\u79bb\u5f00\u9875\u9762\")\r\n },\r\n\r\n \/\/\u7ec4\u4ef6\u751f\u547d\u5468\u671f\r\n beforeRouteEnter(to, from, next) {\r\n \/\/\u4e0d\u80fd\u83b7\u53d6\u5230this\r\n \/\/ do someting\r\n \/\/ \u5728\u6e32\u67d3\u8be5\u7ec4\u4ef6\u7684\u5bf9\u5e94\u8def\u7531\u88ab confirm \u524d\u8c03\u7528\r\n },\r\n beforeRouteUpdate(to, from, next) {\r\n \/\/ do someting\r\n \/\/ \u5728\u5f53\u524d\u8def\u7531\u6539\u53d8\uff0c\u4f46\u662f\u4f9d\u7136\u6e32\u67d3\u8be5\u7ec4\u4ef6\u662f\u8c03\u7528\r\n },\r\n beforeRouteLeave(to, from ,next) {\r\n \/\/\u80fd\u83b7\u53d6\u5230this\r\n \/\/ do someting\r\n \/\/ \u5bfc\u822a\u79bb\u5f00\u8be5\u7ec4\u4ef6\u7684\u5bf9\u5e94\u8def\u7531\u65f6\u88ab\u8c03\u7528\r\n next()\r\n }\r\n});<\/pre>\nvue\u5bf9\u8c61\u5d4c\u5957\u3001\u52a0\u8f7d\u987a\u5e8f\u95ee\u9898<\/span><\/p>\n\u5bf9\u4e8e\u65b0\u624b\u6216\u8005\u662f\u8981\u6295\u5165\u9879\u76ee\u7684\u6700\u597d\u5148\u641e\u6e05\u695a\uff0c\u65b9\u4fbf\u4e4b\u540e\u7684\u67b6\u6784\u8bbe\u8ba1<\/p>\n
1\uff0c\u60c5\u51b5\uff1a\u7236\u5bf9\u8c61id=xx,\u91cc\u9762\u5d4c\u5957\u7740\u5b50\u5bf9\u8c61xx1\uff0c\u5e76\u4e14\u91cc\u9762\u6709\u76f8\u540c\u5143\u7d20{{a}}<\/p>\n<\/div><\/div><\/div><\/div>![\"https:\/\/sdeno.com\/wp-content\/uploads\/2017\/12\/vue1.jpg\"](\"data:image\/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==\" "\\"vue.js\u7b14\u8bb0\\"")
<\/figure>\n\u4fee\u6539\u540e<\/p>\n<\/div><\/div><\/div><\/div><\/figure>\n2\uff0c\u60c5\u51b52\uff1a\u7236\u5143\u7d20\u91cc\u9762\u5d4c\u5957\u7740\u5b50\u5143\u7d20\uff0c\u4f46\u5b50\u5143\u7d20\u91cc\u9762\u7684{{a1}},\u7236\u5143\u7d20\u6ca1\u6709<\/p>\n<\/div><\/div><\/div><\/div><\/figure>\n\u4fee\u6539\u540e<\/p>\n<\/div><\/div><\/div><\/div><\/figure>\n\u603b\u7ed3\uff1a<\/p>\n
1\uff0c\u5b50\u5143\u7d20\u6709\u7684\u5c5e\u6027\uff0c\u7236\u5143\u7d20\u4e00\u5b9a\u8981\u6709\uff1b\u7236\u5143\u7d20\u6709\u7684\u5c5e\u6027\uff0c\u5b50\u5143\u7d20\u53ef\u4ee5\u4e0d\u58f0\u660e\u3002<\/p>\n
2\uff0c\u5b50\u5143\u7d20\u8981\u52a0\u8f7d\u5728\u7236\u5143\u7d20\u524d\u9762<\/p>\n
\u906e\u4e11<\/span><\/div>\n\/\/\u653e\u5728\u516c\u5171\u6837\u5f0f\u7684\u6700\u6700\u524d\u9762\r\n[v-cloak] {\r\n display: none !important;\r\n}\r\n\r\n<div id=\u201capp\u201d v-cloak> \u00a0<\/div><\/pre>\n\u5bf9\u5916\u76f4\u63a5\u8c03\u7528vue\u5c5e\u6027<\/span><\/div>\nvm.str \u00a0\/\/\u5b57\u7b26\u4e32\u6570\u636e<\/div>\nvue\u6570\u636e\u7684\u589e\u3001\u5220\u3001\u6539<\/span>
\nvue\u4e0d\u5141\u8bb8\u6dfb\u52a0\u989d\u5916\u5c5e\u6027\uff0c\u53ea\u80fd\u5728\u5df2\u6709\u7684\u57fa\u7840\u4e0a\u4fee\u6539\uff0c\u6211\u4eec\u53ef\u4ee5\u81ea\u5b9a\u4e49\u4e00\u4e2a\u7a7a\u5bf9\u8c61\uff0c\u5728\u5176\u57fa\u7840\u4e0a\u6dfb\u52a0\u5c5e\u6027\u4e5f\u80fd\u8fbe\u5230\u8fd9\u6837\u7684\u6548\u679c\u3002<\/p>\nvar vm1= new Vue({\r\n el: '#repeat',\r\n data:{\r\n str:'', \/\/\u9884\u7559\u7a7a\u7684\r\n obj:{} \/\/\u9884\u7559\u7a7a\u7684\r\n obj1:{a:''} \/\/\u5982\u679c\u6a21\u677f\u4e2d\u8981\u8c03\u7528obj1.a,\u5c31\u8981\u5728vue\u5b9e\u4f8b\u4e2d\u9884\u5148\u8bbe\u7f6e\u597d\uff0c\u5426\u5219\u4f1a\u62a5\u9519\u3002\r\n }\r\n})<\/pre>\n\u5728\u4fee\u6539\u6570\u7ec4\u3001\u5bf9\u8c61\u65f6\u4e5f\u9700\u8981vue\u5185\u7f6e\u7684\u65b9\u6cd5\u53bb\u4fee\u6539\uff0c\u5982\u679c\u8fd8\u60f3\u6709\u6570\u636e\u53cc\u5411\u7ed1\u5b9a\u6548\u679c\u5c31\u8981\u7528\u4ee5\u4e0b\u65b9\u6cd5\u53bb\u4fee\u6539\u3002\u5426\u5219\u4fee\u6539\u540e\u7684\u89c6\u56fe\u4e5f\u4e0d\u4f1a\u6539\u53d8\u3002<\/p>\n
\u5bf9\u8c61<\/p>\n
\u4fee\u6539\uff1a\r\n Vue.set(vm1.obj,'age',123) \/\/\u6dfb\u52a0\u4e86age\u5c5e\u6027\r\n this.$set(this.someObject,'b',2) \/\/\u4e34\u65f6\u8865\u52a0a\u5c5e\u6027\u4e14\u8d4b\u503c\uff0c\u5982\u679c\u8981\u5220\u9664\u4f7f\u7528this.$delete(this.someObject,'b')\r\n \u6216\r\n vm1.str=xxxx \/\/\u76f4\u63a5\u4fee\u6539\r\n\r\n<\/pre>\n\u6dfb\u52a0\uff1a\r\n this.obj = Object.assign({}, this.obj, { a: 1, b: 2 }); \/\/\u5728obj\u5bf9\u8c61\u4e0a\u6dfb\u52a0\u4e86a\u5c5e\u6027\u548cb\u5c5e\u6027\r\n \u8c03\u7528\uff1a{{obj.age}}<\/pre>\n\u6570\u7ec4<\/p>\n
data:{\r\n arr:['\u6211\u7684\u540d\u5b57','\u662f\u8c22\u5c14\u987f']\r\n}\r\n\r\n\u4fee\u6539\uff1a\r\nVue.set(this.arr, 1, '\u9648\u9648')\r\n\r\n\u4fee\u6539\u957f\u5ea6\r\nexample1.items.splice(newLength)<\/pre>\nvue\u64cd\u4f5c\u6570\u7ec4<\/span><\/div>\n- push()\u00a0 \u00a0 \u00a0 \/\/\u672b\u5c3e\u52a0\r\n- pop()\u00a0 \u00a0 \u00a0 \u00a0\/\/\u672b\u5c3e\u51cf\r\n- shift()\u00a0 \u00a0 \u00a0 \/\/\u9996\u51cf\r\n- unshift()\u00a0 \/\/\u9996\u52a0 ie8\u4e0d\u652f\u6301\r\n- splice()\u00a0 \u00a0 \/\/\u63a8\u8350\u4f7f\u7528\uff0c\u53ef\u589e\u3001\u5220\u3001\u6539\r\n- sort()\u00a0 \u00a0 \u00a0 \u00a0\/\/\u5347\u5e8f\r\n- reverse()\u00a0 \/\/\u964d\u5e8f\r\n\/\/\u4ee5\u4e0a\u65b9\u6cd5\u4f1a\u4fee\u6539\u5143\u6570\u7ec4\r\n\r\n\r\nfilter()\r\nconcat()\r\nslice()\r\n\/\/\u4ee5\u4e0a\u65b9\u6cd5\uff0c\u4e0d\u4f1a\u4fee\u6539\u539f\u6570\u7ec4\uff0c\u8fd4\u56de\u4e00\u4e2a\u65b0\u6570\u7ec4<\/pre>\n<\/div>\nvar example2 = new Vue({\r\n\u00a0 el: '#example-2',\r\n\u00a0 data: {\r\n\u00a0 \u00a0 \u00a0 items: [\r\n\u00a0 \u00a0 \u00a0 \u00a0 { message: 'Foo' },\r\n\u00a0 \u00a0 \u00a0 \u00a0 { message: 'Bar' }\r\n\u00a0 \u00a0 \u00a0 ]\r\n\u00a0 }\r\n})<\/pre>\n<\/div>\n<\/div>\n\u589e<\/div>\nexample2.items.push({ message: 'Baz123' }) \u00a0\/\/\u5728items\u6570\u7ec4\u91cc\u63d2\u5165\u5bf9\u8c61\r\n\r\nVue.set(this.items,2,{name:\u2019111\u2019}) \u00a0 \/\/\u627e\u5230\u6570\u7ec4this.items \u00a0 \u5728\u7d22\u5f152\u7684\u4f4d\u7f6e\u4e0a\u6dfb\u52a0\u6570\u636e \u00a0{name:\u2019111\u2019}\r\n\u6216\u8005\r\nthis.arrys.splice(2,0,'\u5417132\u2019) \u00a0 \/\/\u5728\u6570\u7ec4\u4e2d\u7d22\u5f152\u7684\u4f4d\u7f6e\uff0c\u63d2\u5165\u4e00\u4e2a\u6570\u7ec4\u5185\u5bb9\u4e3a'\u5417132\u2019<\/pre>\n<\/div>\n<\/div>\n\u6570\u7ec4\u66ff\u6362<\/div>\nfilter()\r\nconcat()\r\nslice()\r\nexample1.items = example1.items.filter(function (item) {\r\n\u00a0 return item.message.match(\/Foo\/)\r\n})<\/pre>\n<\/div>\n<\/div>\n\u4fee\u6539\u6570\u7ec4\u5185\u5bb9<\/div>\nexample2.items.$set(0, { childMsg: 'Changed!'})<\/pre>\n<\/div>\n\u5220\u9664\u6570\u7ec4<\/div>\nthis.arrys.splice(0,1) \u00a0\/\/\u4ece\u7b2c0\u4e2a\u7d22\u5f15\u5f00\u59cb\u5305\u62ec\u7b2c0\u4e2a\u7d22\u5f15\uff0c\u90091\u4e2a\u5143\u7d20\u5f00\u59cb\u5220\u9664\r\n\u6ce8\u610f\uff1a$remove\u5df2\u7ecf\u88ab\u5f03\u7528<\/pre>\n$\u7528\u6cd5<\/span>
\nvm.$data \/\/\u83b7\u53d6\u5230vm\u91cc\u9762data\u8bbe\u7f6e\u7684\u6570\u636e
\nvm.$el \/\/\u83b7\u53d6\u5230\u6b64id\u7684\u539f\u751fDOM
\nvm.$options \/\/vm.$options.render=(a)=>{ return a(‘div’,{},’\u6587\u5b57’); } \uff0cdata\u5c5e\u6027\u91cc\u9762\u7684\u6570\u5b57\u6709\u66f4\u65b0\u5c31\u4f1a\u89e6\u53d1\u8be5\u51fd\u6570
\n\u8fd8\u6709\u66f4\u591a$\u7684\u65b9\u6cd5<\/p>\n\u8868\u8fbe\u5f0f<\/span><\/p>\n{{str}} \/\/\u8f93\u51fa\u53d8\u91cf\r\n\u8868\u8fbe\u5f0f\u6307\u51fajs\u8bed\u6cd5\r\n{{ number + 1 }}\r\n{{ ok ? 'YES' : 'NO' }} \/\/\u53ea\u80fd\u4f7f\u7528\u4e09\u5143\u8fd0\u7b97\uff0c\u4e0d\u80fd\u4f7f\u7528if else\r\n{{ message.split('').reverse().join('') }}\r\n<div v-bind:id=\"'list-' + id\"><\/div><\/pre>\n\u4e0d\u89e3\u6790\u8868\u8fbe\u5f0f<\/span><\/p>\n<div v-pre>{{name}} <\/div> \/\/\u76f4\u63a5\u8f93\u51fa {{name}}<\/pre>\n\u8ba1\u7b97\u5c5e\u6027<\/span>
\n\u8ba1\u7b97\u5c5e\u6027\u4e3b\u8981\u662f\u5f25\u8865\u89e3\u51b3{{}}\u8868\u8fbe\u5f0f\u4e0d\u80fd\u89e3\u51b3\u590d\u6742\u7684\u95ee\u9898\u3002
\nvue\u521d\u59cb\u5316\u65f6\uff0c\u6709\u4e9b\u5c5e\u6027\u9700\u8981\u5728vue\u521d\u59cb\u5316\u540e\u8fdb\u884c\u8ba1\u7b97\u540e\u624d\u663e\u793a
\n\u4ec0\u4e48\u65f6\u5019\u9700\u8981\u8ba1\u7b97\u5c5e\u6027\uff1f\u5f53\u4e00\u4e2a\u503c\u9700\u8981\u4f9d\u8d56\u53e6\u4e00\u4e2a\u503c\u53d8\u5316\u800c\u53d8\u5316\u7684\u65f6\u5019\u5c31\u9700\u8981\uff0c\u5c24\u5176\u662f\u5bf9\u5927\u6570\u636e\u7684\u65f6\u5019<\/p>\n<div id=\"example\">\r\n a={{ a }}, b={{ b }}\r\n<\/div>\r\n\r\nvar vm = new Vue({\r\n el: '#example',\r\n data: {\r\n a: 1\r\n },\r\n computed: { \/\/\u8ba1\u7b97\u5c5e\u6027\u91cc\u9762\u7684\u5c5e\u6027\u540d\u8c03\u7528\u65f6\uff0c\u76f4\u63a5\u5199\u53d8\u91cf\uff0c\u5982\uff1a{{b}}, \u4e0d\u80fd{{b()}}\r\n b: function () { \/\/\u5728\u8ba1\u7b97\u5c5e\u6027\u91cc\u9762\u5b9a\u4e49\u7684\u5c5e\u6027\u540d\u53ef\u4ee5\u76f4\u63a5\u5728\u8868\u8fbe\u5f0f\u4e2d\u663e\u793a\uff0cb\u503c\u4f9d\u8d56a\uff0c\u9700\u8981\u521d\u59cb\u5316\u65f6\u8ba1\u7b97\u51fab\u503c\u8fd9\u65f6\u5019\u5c31\u9700\u8981\u8ba1\u7b97\u5c5e\u6027\r\n \/\/ `this` \u6307\u5411 vm \u5b9e\u4f8b\r\n return this.a + 1 \/\/a\u503c\u53d8\u5316\uff0cb\u503c\u4e5f\u4f1a\u81ea\u52a8\u66f4\u65b0\r\n }\r\n\r\n \/\/\u53e6\u4e00\u79cd\u5199\u6cd5\uff1a\r\n myname:{\r\n get(){ return this.xx },\r\n set(newValue){ this.$refs.xxx.src = newValue } \/\/\u5728\u522b\u7684\u5730\u65b9\u4fee\u6539 this.myname = 'baidu.con',newValue\u5c31\u80fd\u83b7\u53d6\u5230\u503c\r\n }\u00a0\r\n }\r\n})\r\n\r\n\u7ed3\u679c\uff1a\r\na=1,b=2 (\u53ea\u6709\u53d8\u91cfb\u88ab\u8c03\u7528\u7684\u65f6\u5019\uff0c\u8ba1\u7b97\u5c5e\u6027\u91cc\u9762\u7684\u51fd\u6570\u624d\u4f1a\u53bb\u8fd0\u884c)<\/pre>\n***\u6ce8\u610f\uff1a\u5f53\u4f7f\u7528v-model\u76d1\u542c\u67d0\u4e2a\u503c\u65f6\uff0c\u9875\u9762\u4e2d\u6b63\u597d\u6709\u4e00\u4e2a\u8868\u8fbe\u5f0f\u662f\u7c7b\u4f3c\u662f<p>{{xx()}}<\/p>\uff0c\u5982\u679cxx()\u5982\u679c\u662f\u505a\u4e86\u5f88\u590d\u6742\u8017\u65f6\u7684\u8ba1\u7b97\uff0c\u63a8\u8350\u628axx\u65b9\u6cd5\u5199\u5165\u5230computed,\u4e2d\u4e0d\u7136\u9875\u9762\u6027\u80fd\u4f1a\u5927\u5927\u964d\u4f4e\u3002\u6848\u4f8b\uff1aindexaaa<\/a><\/p>\n<\/div><\/div><\/div><\/div><\/figure>\nhttps:\/\/cn.vuejs.org\/v2\/guide\/computed.html#%E8%AE%A1%E7%AE%97%E5%B1%9E%E6%80%A7%E7%9A%84-setter<\/a><\/p>\n\u8fd8\u989d\u5916\u63d0\u4f9b\u4e00\u4e2aset\u5c5e\u6027<\/p>\n
computed:{\r\n fullName:{\r\n get: function (){\r\n return this.firstName + ' ' + this.lastName\r\n },\r\n set: function (newValue) {\r\n \/\/\u4e00\u65e6this.fullName = '1122'\u5c5e\u6027\u6709\u6539\u53d8\u5c31\u4f1a\u89e6\u53d1set\r\n this.firstName = newValue\r\n this.lastName = '\u6539\u4e86'\r\n }\r\n }\r\n},<\/pre>\n\u8868\u5355<\/span><\/p>\n\u6848\u4f8b\uff1atest<\/a><\/p>\n\u6a21\u677f<\/span>
\n\/\/\u9700\u8981\u63a7\u5236\u5927\u90e8\u5206html\u663e\u793a\u3001\u9690\u85cf\u7684 \u5c31\u628ahtml\u90fd\u653e\u5165<template>\u91cc\u9762
\n\/\/v-show \u4e0d\u80fd\u7528\u5728 <template>\u4e0a \u4e5f\u4e0d\u652f\u6301 v-else<\/p>\n<template v-if=\"message\">\r\n <h1>Title<\/h1>\r\n <p>Paragraph 1<\/p>\r\n <p>Paragraph 2<\/p>\r\n<\/template>\r\n<p v-else>No<\/p>\r\n\r\n\r\n\u53d6\u4ee3v-else\u7684\u65b9\u6cd5\uff1a\r\n<p v-show=\"condition\">YES<\/p>\r\n<p v-show=\"!condition\">NO<\/p><\/pre>\n(\u63d0\u793a\uff1a\u9891\u7e41\u5207\u6362\u63a8\u8350\u4f7f\u7528v-show\uff0c\u56e0\u4e3av-if\u6bcf\u6b21\u663e\u793a\u7684\u65f6\u5019\u90fd\u9700\u8981\u8017\u6027\u80fd)<\/p>\n
\u8fc7\u6ee4\u5668\u8868\u8fbe\u5f0f<\/span><\/p>\n\u8fc7\u6ee4\u5668\u53ea\u80fd\u653e\u5728{{ }} \u548c v-bind \u4e2d<\/p>\n
{{ message | capitalize }} \/\/message\u7684\u503c\u4f20\u5165\u5230capitalize\u51fd\u6570\u91cc\u9762\u8fdb\u884c\u8fc7\u6ee4\u5904\u7406\u540e\u5728\u8fd4\u56de\r\n{{ message | filterA | filterB }} \/\/\u8fc7\u6ee4\u6761\u4ef6\u53ef\u4ee5\u53e0\u52a0\r\n{{ message | filterA (\u2018arg1', arg2) }} \/\/\u8fc7\u6ee4\u4f20\u53c2\u6570\uff0c\u9ed8\u8ba4\u7b2c\u4e00\u4e2a\u53c2\u6570\u662fmessage\uff0c\u2018arg1', arg2\u5206\u522b\u662f\u7b2c\u4e8c\u3001\u7b2c\u4e09\u4e2a\u53c2\u6570<\/pre>\n<li v-for=\"(value,index) in scroll_img\" :class=\"value.xx | filterA\">\r\n {{index}}\r\n<\/li><\/pre>\n\u81ea\u5b9a\u4e49\u8fc7\u6ee4\u5668<\/p>\n
<p>{{name | time_style | add_year}}<\/p> \/\/name\u662f\u6570\u636e\uff0cname\u6570\u636e\u4f1a\u7ecf\u8fc7time_style\u3001add_year\u7684\u8fc7\u6ee4\r\n\r\ndata:{\r\n name:new Date(), \/\/\u539f\u59cb\u6570\u636e\r\n},\r\nfilters:{\r\n time_style:function (value) {\r\n console.log(value); \/\/\u8fd9\u91cc\u7684value\u5c31\u662fnew Date()\r\n return value.getHours()+':'+value.getMinutes()+':'+value.getSeconds()\r\n },\r\n add_year:function (value) {\r\n console.log(value); \/\/\u8fd9\u91cc\u7684value\u662f\u7ecf\u8fc7time_style\u5904\u7406\u8fc7\u540e\u8fd4\u56de\u6765\u7684\u503c\r\n return \"2017-\"+value\r\n }\r\n}<\/pre>\n\u6761\u4ef6\u8bed\u53e5 (\u663e\u9690)<\/span><\/p>\n\/\/v-if\u662f\u76f4\u63a5\u5220\u9664DOM\u6765\u63a7\u5236\u663e\u9690\r\n<p v-if=\"greeting\">Hello!<\/p>\r\n<p v-else>No<\/p>\r\n\r\n\u6761\u4ef6\u53ef\u4ee5\u8fd9\u4e48\u5199\r\n<h1 v-if=\"yes\">Yes!<\/h1>\r\n<h1 v-if=\"no\">No!<\/h1>\r\n<h1 v-if=\"age >= 25\">Age: {{ age }}<\/h1>\r\n<h1 v-if=\"name.indexOf('jack') >= 0\">Name: {{ name }}<\/h1>\r\n\r\nvar vm = new Vue({\r\n el: '#app',\r\n data: {\r\n yes: true,\r\n no: false,\r\n age: 28,\r\n name: 'keepfool'\r\n }\r\n})\r\n\r\n\r\n\/\/v-show\u6839\u636edisplay: none;\u6765\u63a7\u5236\u663e\u9690\r\n<p v-show=\"message\">YES<\/p>\r\n<p v-else>No<\/p>\r\n\r\n\r\n2.1.0 \u65b0\u589e\r\n<div v-if=\"type === 'A'\">\r\nA\r\n<\/div>\r\n<div v-else-if=\"type === 'B'\">\r\nB\r\n<\/div>\r\n<div v-else-if=\"type === 'C'\">\r\nC\r\n<\/div>\r\n<div v-else>\r\nNot A\/B\/C\r\n<\/div><\/pre>\n\u5143\u7d20\u5c5e\u6027attr<\/span><\/p>\ndata: {\r\n text:'text',\r\n value:'\u503c',\r\n url:'http:\/\/baidu.com',\r\n a_title:'a\u8fde\u63a5'\r\n}\r\n\r\n<a v-bind:href=\"url\" v-bind:title=\"a_title\">aaa<\/a>\r\n\/\/<a href=\"http:\/\/baidu.com\" title=\"a\u8fde\u63a5\">aaa<\/a>\r\n\r\n<input v-bind:type=\"text\" v-bind:value=\"value\">\r\n\/\/<input type=\"text\" value=\"\u503c\">\r\n\r\n<a v-bind:href=\"url\"><\/a>\r\n\u7f29\u5199\uff1a\r\n<a :href=\"url\"><\/a><\/pre>\n\u52a8\u6001\u5c5e\u6027<\/span><\/div>\n<\/p>\n
data(){\r\n msg:'\u5185\u5bb9'\r\n name:'titlexx',\r\n event:'click'\r\n},\r\ntemplate:`<div :[name]=\"msg\" @[event]=\"handle\"><\/div>`,\r\nmethods:{\r\n handle(){\r\n }\r\n}\r\n\r\n\u6548\u679c\uff1a\r\n<div titlexx=\"\u5185\u5bb9\"><\/div><\/pre>\nclass\u52a8\u6001\u6dfb\u52a0<\/span>
\n\u5728vue\u4e2d\u6dfb\u52a0class\u63a8\u8350\u4f7f\u7528v-bind:class\u6765\u6dfb\u52a0<\/p>\n\u5bf9\u8c61\u65b9\u6cd5\uff1a<\/p>\n
(1)\r\n <div class=\"static\" v-bind:class=\"{ 'class-a': isA, 'class-b': isB }\"><\/div>\r\ndata: {\r\n isA: true,\r\n isB: false\r\n}\r\n\u7ed3\u679c\uff1a<div class=\"static class-a\"><\/div>\r\n \r\n\r\n(2)\r\n<div v-bind:class=\"classObject\"><\/div>\r\ndata: {\r\n classObject: {\r\n 'class-a': true,\r\n 'class-b': false\r\n }\r\n}<\/pre>\n\u6570\u7ec4\u65b9\u6cd5\uff1a<\/p>\n
<div v-bind:class=\"[classA, classB]\">\r\ndata: {\r\n classA: 'class-a',\r\n classB: 'class-b'\r\n}\r\n\r\n<div class=\"class-a class-b\"><\/div><\/pre>\n\u6570\u7ec4\u548c\u5bf9\u8c61<\/p>\n
<div v-bind:class=\"[{'active':a},iserror]\"> fasdfasdf <\/div>\r\n\r\ndata:{\r\n a:true,\r\n iserror:'name_class'\r\n},\r\n\r\n\u7ed3\u679c\uff1a<div class=\"active name_class\"> fasdfasdf <\/div>\r\n\r\n\r\n\u53e6\u4e00\u79cd\u8868\u8fbe\u5f0f\r\n<div v-bind:class=\"[classA, { classB: isB, classC: isC }]\"><\/pre>\n\u4e09\u5143\u8868\u8fbe\u5f0f<\/p>\n
<div v-bind:class=\"[classA, isB ? classB : '']\"><\/pre>\n\u5982\u679c\u9047\u5230\u8d1f\u8d23\u5224\u65ad\u63a8\u8350\u4f7f\u7528\u8ba1\u7b97\u5c5e\u6027\uff0c\u5982\uff1a<\/p>\n
<input type=\"text\" v-model=\"name\" :class=\"class_array\">\r\n\r\nvar app=new Vue({\r\n el:\"#app\",\r\n data:{\r\n a:true,\r\n b:false\r\n },\r\n computed:{\r\n class_array:function () {\r\n return {\r\n class_1: this.a && !this.b\r\n }\r\n }\r\n }\r\n});<\/pre>\ncss\u6837\u5f0f<\/span><\/p>\n(\u63a8\u8350)\u5bf9\u8c61\u65b9\u6cd5\uff1a\r\n<div v-bind:style=\"styleObject\"><\/div>\r\ndata: {\r\n styleObject: {\r\n color: 'red',\r\n fontSize: '13px'\r\n }\r\n}\r\n\r\n\u6570\u7ec4\u65b9\u6cd5\uff1a\r\n<div v-bind:style=\"[styleObjectA, styleObjectB]\">fff<\/div>\r\ndata: {\r\n styleObjectA:{color:'red'},\r\n styleObjectB:{fontSize:'13px'},\r\n}\r\n\r\n\r\n\u5e38\u89c4\uff1a\r\n<img alt=\"\" :style=\"'background:url('+val.cover_picture+') no-repeat center;border:0'\">\r\n\r\n\u7ed3\u679c\u90fd\u662f\uff1a<div style=\"color: red; font-size: 13px;\">fff<\/div><\/pre>\n\u90fd\u7c7b\u4f3c\u8981\u5b66\u4f1a\u4e3e\u4e00\u53cd\u4e09<\/p>\n
DOM\u4e8b\u4ef6<\/span><\/p>\nv-on:input\u00a0 \u7f29\u5199 @input\r\n\r\n<input type=\"text\" @input=\"fn\"> \/\/fn\u5199\u9700\u8981\u7684\u903b\u8f91\u5224\u65ad\r\n\r\n\u7c7b\u4f3c\u4e8ejquery\u5199\u6cd5\r\n$('.tx').bind('input propertychange', function() { \r\n document.title=$(this).val();\r\n});<\/pre>\n\u56fe\u7247\u76d1\u542c\u4e8b\u4ef6<\/span><\/p>\n<img :src=\"item.iconUrl\" @error=\"errorImgfn\" >\r\n\r\nmethods: {\r\n errorImgfn(e){\r\n e.target.src=require('@\/assets\/imgs\/dbsx.png')\r\n },\r\n}\r\n\r\n\u6216\u8005\r\n<img :src=\"item.iconUrl\" :onerror=\"errorImg\" >\r\n\r\n data () {\r\n return {\r\n errorImg: 'this.src=\"' + require('@\/assets\/imgs\/dbsx.png') + '\"'\r\n };\r\n },\r\n\u540c\u6837\u4e5f\u6709@onload=\"\"<\/pre>\n\u6848\u4f8b\uff1a<\/p>\n
methods:{\r\n click:function(e){\r\n console.log(this);\r\n }\r\n}\r\n\r\n<button v-on:click=\"click($event)\">\u70b9<\/button>\r\n\u7f29\u5199\uff1a<button @click=\"click($event)\">\u70b9<\/button><\/pre>\n\u89e3\u9664\u4e8b\u4ef6\u7ed1\u5b9a\uff1a<\/p>\n
vue\u4e0d\u50cfjquery\u6709unbind\u548coff\uff0c\u4f46\u662f\u53ef\u4ee5\u5229\u7528\u4e00\u4e9b\u5c0f\u6280\u5de7\u53bb\u5b9e\u73b0\uff0c\u4f8b\u5982\uff1a<\/p>\n
<div id=\"app\">\r\n <button @click=\"status && fn($event)\">xxx<\/button>\r\n <p><button @click=\"bian\">change<\/button><\/p>\r\n<\/div>\r\n\r\nnew Vue({\r\n el:'#app',\r\n data:{\r\n status:true\r\n },\r\n methods:{\r\n fn:function (e) {\r\n console.log(e)\r\n },\r\n bian:function () {\r\n this.status=false;\r\n }\r\n }\r\n});\r\n\r\n\/\/\u901a\u8fc7\u6539\u53d8status\u53d8\u91cf\u53bb\u5b9e\u73b0<\/pre>\n\u5e38\u7528\uff1a<\/p>\n
@focus \/\/input \u83b7\u53d6\u7126\u70b9\r\n@blur \/\/ \u5931\u53bb\u7126\u70b9<\/pre>\ntouch\u4e8b\u4ef6<\/span><\/p>\n\u957f\u6309\uff0c\u70b9\u51fb\u4e8b\u4ef6<\/p>\n
<div @touchstart=\"gotouchstart()\" @touchmove=\"gotouchmove\" @touchend=\"gotouchend()\"><\/div><\/pre>\nmethods:{\r\n gotouchstart(img){\r\n touch_time=new Date()\/1000; \/\/\u8bb0\u5f55\u624b\u6307\u653e\u5728\u5c4f\u5e55\u4e0a\u7684\u65f6\u95f4\r\n temp_time=0;\r\n run_fn=null;\r\n clearTimeout(run_fn);\r\n run_fn= setTimeout(function () {\r\n Tools.dialog.strHtml('<div><img style=\"display: block;width: 70%;\" src=\"'+img+'\"> <\/div>');\r\n },800);\r\n },\r\n \/\/\u624b\u91ca\u653e\uff0c\u5982\u679c\u5728800\u6beb\u79d2\u5185\u5c31\u91ca\u653e\uff0c\u5219\u53d6\u6d88\u957f\u6309\u4e8b\u4ef6\uff0c\u6b64\u65f6\u53ef\u4ee5\u6267\u884conclick\u5e94\u8be5\u6267\u884c\u7684\u4e8b\u4ef6\r\n gotouchend(num){\r\n var self=this;\r\n if( Math.ceil( ((new Date()\/1000)-touch_time)*100 )\/100>0.8 ){\r\n \/\/ console.log('\u957f\u6309');\r\n\r\n }else{\r\n clearTimeout(run_fn);\r\n self.gokill(num);\r\n }\r\n },\r\n \/\/\u5982\u679c\u624b\u6307\u6709\u79fb\u52a8\uff0c\u5219\u53d6\u6d88\u6240\u6709\u4e8b\u4ef6\uff0c\u6b64\u65f6\u8bf4\u660e\u7528\u6237\u53ea\u662f\u8981\u79fb\u52a8\u800c\u4e0d\u662f\u957f\u6309\r\n gotouchmove(){\r\n clearTimeout(run_fn);\r\n },\r\n}<\/pre>\n\u6307\u4ee4\u4fee\u9970\u7b26<\/span><\/p>\n<a v-bind:href.literal=\"url\" v-bind:title=\"a_title\">aaa<\/a>\r\n\u76f4\u63a5\u663e\u793a <a href=\"url\" title=\"a\u8fde\u63a5\">aaa<\/a> \/\/href\u76f4\u63a5\u663e\u793a\u5c5e\u6027\u540d\r\n\r\n\u7981\u6b62\u9ed8\u8ba4\u884c\u4e3a\r\n<button v-on:submit.prevent=\"onSubmit\"><\/button> \/\/\u76f8\u5f53\u4e8e\u52a0\u4e86event.preventDefault()\r\n\r\n<a @click.stop=\u201c\"> <\/a> \/\/\u963b\u6b62\u4e8b\u4ef6\u5192\u6ce1\r\n<div @click.self><\/div> \/\/\u53ea\u6709\u8be5\u5143\u7d20\u89e6\u53d1\uff0c\u4e0d\u5305\u62ec\u5b50\u5143\u7d20<\/pre>\n1\uff0c\u4e8b\u4ef6\u4fee\u9970\u7b26<\/p>\n
.stop \/\/\u963b\u6b62\u4e8b\u4ef6\u5192\u6ce1\r\n.prevent \/\/\u963b\u6b62\u9ed8\u8ba4\u884c\u4e3a\uff0c\u4f8b\u5982\u70b9\u51fba\u4f1a\u81ea\u52a8\u8df3\u9875\u9762\uff0c\u70b9\u51fb<input type=\u201csubmit\u201d>\u4f1a\u5237\u65b0\u63d0\u4ea4\u6570\u636e\r\n.capture \/\/\u4e00\u822c\u4e8b\u4ef6\u90fd\u662f\u5728\u5192\u6ce1\u65f6\u5019\u88ab\u6267\u884c\u7684\uff0caddEventListener(\u2018click\u2019,fn,true) ,\u6dfb\u52a0\u6b64\u4fee\u9970\u7b26\u76f8\u5f53\u4e8e\u6539\u6210\u4e86true,\u9ed8\u8ba4\u662ffalse\r\n.self \/\/\u4f8b\u5982\u5f53\u7236\u5143\u7d20\u7ed1\u5b9a\u4e86click,\u7236\u5143\u7d20\u91cc\u9762\u53c8\u6709\u4e00\u4e2a\u5b50\u5143\u7d20\uff0c\u5f53\u70b9\u51fb\u4e86\u5b50\u5143\u7d20\u65f6\u5019\uff0c\u5176\u5b9e\u540c\u65f6\u4e5f\u70b9\u51fb\u4e86\u7236\u5143\u7d20\u56e0\u4e3a\u7236\u5143\u7d20\u5305\u88f9\u7740\u5b50\u5143\u7d20\u561b\uff0cclick\u89e6\u53d1\u3002\u5f53\u7ed9\u7236\u5143\u7d20\u6dfb\u52a0.self\u65f6\uff0c\u5728\u70b9\u51fb\u5b50\u5143\u7d20\u65f6\u5019\uff0c\u5c31\u4e0d\u4f1a\u51fa\u53d1click\u4e86\u3002\u4e5f\u6709\u963b\u6b62\u5192\u6ce1\u7684\u6548\u679c\uff0c\u76f8\u5f53\u4e8ee.currentTarget\r\n.once \/\/2.1.4 \u65b0\u589e\uff0c\u53ea\u89e6\u53d1\u4e00\u6b21\u4e8b\u4ef6\r\n.native \/\/ v-on:click.native\uff0c\u8fd9\u6837\u89e6\u53d1\u7684\u5c31\u662fjs\u539f\u751f\u7684click\u4e8b\u4ef6\u4e86\u800c\u4e0d\u662fvue\u5c01\u88c5\u597d\u7684\u4e8b\u4ef6\r\n\r\n<a v-on:click.stop=\"doThis\"><\/a> \/\/\u963b\u6b62\u9ed8\u8ba4\u884c\u4e3a\r\n<a v-on:click.stop.prevent=\"doThat\"><\/a> \/\/\u540c\u65f6\u963b\u6b62\u9ed8\u8ba4\u884c\u4e3a\u548c\u4e8b\u4ef6\u5192\u6ce1\r\n<form v-on:submit.prevent><\/form> \/\/\u53ea\u6dfb\u52a0\u4fee\u9970\u7b26 \uff0c\u4e0d\u6dfb\u52a0\u5176\u4ed6\u53c2\u6570<\/pre>\n2\uff0c\u952e\u76d8\u4fee\u9970\u7b26<\/p>\n
<!-- \u540c\u4e0a -->\r\n<input v-on:keyup.enter=\u201cfn\u201d> \/\/\u5f53input\u83b7\u53d6\u7126\u70b9\u65f6\u5019\uff0c\u6309\u56de\u8f66\u5c31\u4f1a\u89e6\u53d1fn\u4e8b\u4ef6\uff0c\u5bf9\u5916\u8c03\u7528\u5c31\u662f\r\nvm.fn()\u4e8b\u4ef6\r\n\r\n<!-- \u7f29\u5199\u8bed\u6cd5 -->\r\n<input @keyup.enter=\u201cfn\">\r\n\u6216\u8005\r\n<input @keyup.13=\"fn\" type=\"text\u201d>\r\n\r\n\u6309\u952e\u7ec4\u5408\r\n<input @keyup.ctrl.67=\"fn\" type=\"text\u201d> \/\/\u83b7\u53d6input\u7126\u70b9\u540e\u540c\u65f6\u6309\u4f4fctrl+c \u5c31\u80fd\u89e6\u53d1fn\u51fd\u6570\r\n\r\n\r\n\u952e\u76d8\u522b\u540d\r\nenter\r\ntab\r\ndelete\r\nesc\r\nspace\r\nup\r\ndown\r\nleft\r\nright\r\nctrl\r\nalt\r\nshift\r\nmeta (mac\u662fcommand,win\u662fwindows)\r\n\r\n\u81ea\u5b9a\u4e49\u522b\u540d\r\nVue.config.keyCodes.huiche=13<\/pre>\n3\uff0c\u6570\u636e\u540c\u6b65\u4fee\u9970\u7b26<\/p>\n
lazy \/\/\u6548\u679c\u90fd\u662f\u540c\u6b65\uff0c\u4f46\u662f\u53ea\u6709\u5728input\u5931\u53bb\u7126\u70b9\u65f6\u5019\u624d\u540c\u6b65\u6570\u636e\r\nnumber \/\/\u5c06\u5b57\u7b26\u4e32\u7684\u6570\u5b57\u8f6c\u5316\u4e3a\u6570\u5b57\u7c7b\u578b\uff0c\u5982\u679c\u662fNaN\u76f4\u63a5\u663e\u793a\u6b64\u6570\u636e\uff0c\u4f8b\u5982\u662fabc123,\u8bf4\u660e\u662fNaN\uff0c\u90a3\u5c31\u76f4\u63a5\u663e\u793aabc123\r\ntrim \/\/\u81ea\u52a8\u53bb\u6389 \u9996\u5c3e\u7a7a\u683c\r\n\r\n\r\n\u4e3e\u4f8b\uff1a\r\n<input v-model.lazy=\"msg\">\r\n<input v-model.number=\"msg\">\r\n<input v-model.trim=\"msg\"><\/pre>\n\u5c5e\u6027\u76d1\u542c$watch<\/span><\/p>\nhttps:\/\/cn.vuejs.org\/v2\/api\/#watch<\/a><\/p>\nvar vm = new Vue({\r\n el:'#app',\r\n data:{\r\n str:'\u4f60\u597d',\r\n arr:[],\r\n obj:{\r\n a:''\r\n }\r\n },\r\n watch:{\r\n str:function(new_value,old_value){\r\n },\r\n 'obj.a':{\r\n handler: function (new_value,old_value) { \/* ... *\/ }\r\n }\r\n \/\/\u6216\u8005\r\n 'obj':{\r\n handler: function (new_value,old_value) { new_value.a },\r\n deep: true, \/\/\u6df1\u5ea6\u76d1\u542c\r\n immediate: true \/\/true\u65f6\uff0c\u9ed8\u8ba4\u6267\u884c\u4e00\u6b21handler\u51fd\u6570\r\n }\r\n }\r\n});\r\n\r\n\u6216\u8005\r\n\r\n<\/pre>\nhttps:\/\/cn.vuejs.org\/v2\/api\/#vm-watch<\/a><\/p>\nvm.$watch('str', function (new_value,old_value) { \/\/\u5c5e\u6027\u503c\u53d1\u751f\u6539\u53d8\u5c31\u4f1a\u89e6\u53d1\r\n \r\n},{\r\n deep: true\r\n});\r\n\r\n\/\/\u6ce8\u610f\u5982\u679c\u76f4\u63a5\u76d1\u542c\u6574\u4e2a\u5bf9\u8c61arr\u6216\u8005obj\uff0cold_value\u8fd4\u56de\u6765\u7684\u503c\u8ddfnew_value\u662f\u4e00\u6837\u7684\r\n\r\n<\/pre>\ninput\u76d1\u542c<\/span><\/p>\n\u4e24\u79cd\u65b9\u6cd5<\/p>\n
1,v-on:input<\/p>\n
<input type=\"text\" v-on:input =\"inputFunc($event)\">\r\n\r\nmethods:{\r\n inputFunc:function (e) {\r\n document.title=e.target.value;\r\n },\r\n}<\/pre>\n2,watch<\/p>\n
<input type=\"number\" :value=\"buy_num\" v-model=\"buy_num\">\r\n\r\ndata:{\r\n buy_num:0\r\n},\r\nwatch:{\r\n buy_num:function(){\r\n console.log(this.buy_num);\r\n }\r\n}<\/pre>\n\u5faa\u73af\u3001\u904d\u5386<\/span><\/p>\n\u6570\u636e\uff1a<\/p>\n
data:{\r\n array:['\u9648\u9648',20,'\u7537'],\r\n obj:{\r\n xx1:'\u6570\u5b571',\r\n xx2:'\u6570\u5b572',\r\n xx3:'\u6570\u5b573'\r\n },\r\n}<\/pre>\n\u6570\u7ec4\uff1a<\/p>\n
<ul>\r\n <li v-for=\"(value,index) in array\">\r\n \u7d22\u5f15:{{index}}----\u503c\uff1a{{value}}\r\n <\/li>\r\n<\/ul><\/pre>\n<\/div><\/div><\/div><\/div><\/figure>\n\u5bf9\u8c61\uff1a<\/p>\n
<ul>\r\n <li v-for=\"(value,key,index) in obj\">\r\n \u5c5e\u6027\u540d\uff1a{{key}}--- \r\n \u503c\u662f:{{value}}---\r\n \u7d22\u5f15\u662f{{index}} \r\n <\/li>\r\n<\/ul><\/pre>\n<\/div><\/div><\/div><\/div><\/figure>\n\u590d\u5408\u6570\u636e:<\/p>\n
data:{\r\n scroll_img:[\r\n {img_name:1},\r\n {img_name:2},\r\n {img_name:3},\r\n {img_name:4}\r\n ]\r\n},\r\nmethods:{\r\n remove_li:function (index) {\r\n this.scroll_img.splice(index,1)\r\n }\r\n}<\/pre>\n\u5bf9\u8c61\u548c\u6570\u7ec4\uff1a<\/p>\n
<ul>\r\n <li :class=\"'xx-'+index\" :title=\"value.img_name\" v-for=\"(value,index) in scroll_img\">\r\n \u503c\u662f:{{value.img_name}}---\r\n \u7d22\u5f15\u662f{{index}} ----\r\n <button @click=\"remove_li(index)\">\u5220\u9664\u8be5\u9879<\/button>\r\n <\/li>\r\n<\/ul><\/pre>\n<\/div><\/div><\/div><\/div><\/figure>\nv-for\u4e92\u5d4c<\/p>\n
data:{\r\n scroll_img:[\r\n {img_name1:1},\r\n {img_name2:2},\r\n {img_name3:3},\r\n {img_name4:4},\r\n ]\r\n}\r\n\r\n\r\n<ul>\r\n <li v-for=\"(value,index) in scroll_img\">\r\n \u7d22\u5f15:{{index}}---\r\n <span v-for=\" (val,key,index) in value\"> \u5c5e\u6027:{{key}} <\/span>---\r\n <span v-for=\" (val,key,index) in value\"> \u503c:{{val}} <\/span>\r\n <\/li>\r\n<\/ul><\/pre>\n<\/div><\/div><\/div><\/div><\/figure>\nv-for \u7b5b\u9009\u3001\u8fc7\u6ee4<\/p>\n
\u5728\u904d\u5386\u7684\u540c\u65f6\u4e0d\u5e0c\u671b\u6709\u4e9b\u6570\u636e\u663e\u793a\u51fa\u6765<\/p>\n
1\uff0c\/\/v-bind:class\u65b9\u6cd5\uff0c\u7ed9\u4e0d\u9700\u8981\u663e\u793a\u7684\u6570\u636e\u6dfb\u52a0\u6307\u5b9aclass\u540d\u9690\u85cf\u6216\u8005\u6dfb\u52a0test\u81ea\u5b9a\u4e49\u8fc7\u6ee4\u65b9\u6cd5\r\n<li v-for=\"(value,index) in scroll_img\" :class=\"!!value.xx?'gg':'mm' | test\">\r\n \u7d22\u5f15:{{index}}---\r\n<\/li><\/pre>\n2\uff0c\/\/v-show\u65b9\u6cd5\uff0c\u8ddfv-bind:class\u6548\u679c\u7c7b\u4f3c\u4ec5\u4ec5\u662f\u9690\u85cf\uff0cdom\u8fd8\u662f\u5b58\u5728\u7684<\/pre>\n3\uff0c\/\/v-if,\u76f4\u63a5\u628a\u4e0d\u5e0c\u671b\u663e\u793a\u7684\u6570\u636e\u5220\u9664\r\n<li v-for=\"(value,index) in scroll_img\" v-if=\"!value=='xx'\"> \/\/\u904d\u5386\u51fa\u6765\u7684value\u503c\u5982\u679c\u7b49\u4e8exx\u5b57\u7b26\u4e32\u5c31\u4e0d\u663e\u793a\r\n \u7d22\u5f15:{{index}}---\r\n<\/li><\/pre>\n4\uff0c\u901a\u8fc7\u8ba1\u7b97\u5c5e\u6027\u5728\u8fc7\u6ee4\u540e\u624d\u628a\u503c\u5e26\u5165\u5230v-for\u4e2d\u904d\u5386<\/pre>\nv-for\u6392\u5e8f\uff1a\u5347\u5e8f\u3001\u964d\u5e8f<\/p>\n
\u5982\u679c\u5e0c\u671b\u904d\u5386\u7684\u503c\u6839\u636e\u67d0\u4e2a\u5b57\u6bb5\u964d\u5e8f\u6216\u8005\u5347\u5e8f\uff0c\u8981\u5148\u901a\u8fc7\u8ba1\u7b97\u5c5e\u6027\u6392\u5217\u597d\u624d\u5e26\u5165\u5230v-for\u5faa\u73af\u4e2d<\/p>\n
:key\u91cd\u65b0\u6e32\u67d3<\/span><\/p>\n\u6848\u4f8b\uff1a<\/p>\n
\u9ed8\u8ba4\u60c5\u51b5\u4f7f\u7528v-for\u6e32\u67d3\u5217\u8868\u65f6\uff0c\u5728\u6bcf\u4e2ainput\u8f93\u5165\u5185\u5bb9\uff0c\u5982\u4e0b<\/p>\n<\/div><\/div><\/div><\/div><\/figure>\n\u5728\u70b9\u51fb\u201c\u6253\u4e71\u987a\u5e8f\u201d\uff0creverse()\uff0c\u89c6\u56fe\u4e0a\u5e76\u6ca1\u6709\u53d1\u751f\u4efb\u4f55\u53d8\u5316\uff0c\u5176\u5b9edom\u7ed3\u6784\u5df2\u7ecf\u53d1\u751f\u4e86\u53d8\u5316\uff0c\u5982\u56fe\uff1a<\/p>\n<\/div><\/div><\/div><\/div><\/figure>\n\u6240\u4ee5\u9700\u8981\u5f3a\u5236\u5728\u66f4\u65b0\u4e00\u6b21\u6392\u5e8f\u89c6\u56fe\u624d\u80fd\u540c\u6b65\u66f4\u65b0\uff0c\u7ed9\u904d\u5386input\u7684dom\u7ed3\u6784\u6dfb\u52a0\u4e00\u4e2a:key=”index”\u5c5e\u6027\uff0cindex\u5fc5\u987b\u662f\u552f\u4e00\u4e0d\u80fd\u91cd\u590d\uff0c\u6dfb\u52a0\u4e4b\u540e\u5728\u70b9\u51fb\u201c\u6253\u4e71\u987a\u5e8f\u201d\uff0c<\/p>\n<\/div><\/div><\/div><\/div><\/figure>\n\u5982\u679c\u5728\u4f7f\u7528v-for\u904d\u5386\u6570\u636e\u65f6\uff0c\u5982\u679c\u6570\u636e\u53d1\u751f\u4e86\u53d8\u5316\u4f46\u662f\u89c6\u56fe\u6ca1\u53d8\u53ef\u4ee5\u5c1d\u8bd5\u4f7f\u7528:key\u6765\u89e3\u51b3\u3002<\/p>\n
https:\/\/cythilya.github.io\/2017\/04\/27\/vue-list-rendering\/<\/a><\/p>\n
![\"https:\/\/sdeno.com\/wp-content\/uploads\/2017\/12\/vue1.jpg\"](\"https:\/\/sdeno.com\/wp-content\/uploads\/2017\/12\/vue1.jpg\" "\\"vue.js\u7b14\u8bb0\\"")
<\/figure>\n![\"https:\/\/sdeno.com\/wp-content\/uploads\/2017\/12\/vue2.jpg\"](\"https:\/\/sdeno.com\/wp-content\/uploads\/2017\/12\/vue2.jpg\" "\\"vue.js\u7b14\u8bb0\\"")
<\/figure>\n![\"https:\/\/sdeno.com\/wp-content\/uploads\/2017\/12\/vue3.jpg\"](\"https:\/\/sdeno.com\/wp-content\/uploads\/2017\/12\/vue3.jpg\" "\\"vue.js\u7b14\u8bb0\\"")
<\/figure>\n![\"https:\/\/sdeno.com\/wp-content\/uploads\/2017\/12\/vue4.jpg\"](\"https:\/\/sdeno.com\/wp-content\/uploads\/2017\/12\/vue4.jpg\" "\\"vue.js\u7b14\u8bb0\\"")
<\/figure>\n![\"https:\/\/sdeno.com\/wp-content\/uploads\/2017\/12\/QQ20181124-171200@2x-285x300.png\"](\"https:\/\/sdeno.com\/wp-content\/uploads\/2017\/12\/QQ20181124-171200@2x-285x300.png\" "\\"vue.js\u7b14\u8bb0\\"")
<\/figure>\n![\"https:\/\/sdeno.com\/wp-content\/uploads\/2017\/12\/for_array.jpg\"](\"https:\/\/sdeno.com\/wp-content\/uploads\/2017\/12\/for_array.jpg\" "\\"vue.js\u7b14\u8bb0\\"")
<\/figure>\n![\"https:\/\/sdeno.com\/wp-content\/uploads\/2017\/12\/for_obj.jpg\"](\"https:\/\/sdeno.com\/wp-content\/uploads\/2017\/12\/for_obj.jpg\" "\\"vue.js\u7b14\u8bb0\\"")
<\/figure>\n![\"https:\/\/sdeno.com\/wp-content\/uploads\/2017\/12\/obj_array1.jpg\"](\"https:\/\/sdeno.com\/wp-content\/uploads\/2017\/12\/obj_array1.jpg\" "\\"vue.js\u7b14\u8bb0\\"")
<\/figure>\n![\"https:\/\/sdeno.com\/wp-content\/uploads\/2017\/12\/forandfor.jpg\"](\"https:\/\/sdeno.com\/wp-content\/uploads\/2017\/12\/forandfor.jpg\" "\\"vue.js\u7b14\u8bb0\\"")
<\/figure>\n![\"https:\/\/sdeno.com\/wp-content\/uploads\/2017\/12\/for_input1.jpg\"](\"https:\/\/sdeno.com\/wp-content\/uploads\/2017\/12\/for_input1.jpg\" "\\"vue.js\u7b14\u8bb0\\"")
<\/figure>\n![\"https:\/\/sdeno.com\/wp-content\/uploads\/2017\/12\/for_input2.jpg\"](\"https:\/\/sdeno.com\/wp-content\/uploads\/2017\/12\/for_input2.jpg\" "\\"vue.js\u7b14\u8bb0\\"")
<\/figure>\n![\"https:\/\/sdeno.com\/wp-content\/uploads\/2017\/12\/for_input3.jpg\"](\"https:\/\/sdeno.com\/wp-content\/uploads\/2017\/12\/for_input3.jpg\" "\\"vue.js\u7b14\u8bb0\\"")
<\/figure>\n