{"id":5017,"date":"2016-05-11T16:22:21","date_gmt":"2016-05-11T08:22:21","guid":{"rendered":"https:\/\/sdeno.com\/?p=5017"},"modified":"2017-11-22T09:26:03","modified_gmt":"2017-11-22T01:26:03","slug":"javascript%e5%bc%82%e6%ad%a5%e7%bc%96%e7%a8%8b%e6%8f%92%e4%bb%b6-jsdeferred-js","status":"publish","type":"post","link":"https:\/\/sdeno.com\/?p=5017","title":{"rendered":"JavaScript\u5f02\u6b65\u7f16\u7a0b\u63d2\u4ef6--jsDeferred.js"},"content":{"rendered":"

JavaScript\u5f53\u524d\u6709\u4f17\u591a\u5b9e\u73b0\u5f02\u6b65\u7f16\u7a0b\u7684\u65b9\u5f0f\uff0c\u6700\u4e3a\u8000\u773c\u7684\u5c31\u662fECMAScript 6\u89c4\u8303\u4e2d\u7684Promise\u5bf9\u8c61\uff0c\u5728ES6\u8fd8\u6ca1\u53d1\u5e03\u7684\u65f6\u5019\u4e00\u822c\u90fd\u662f\u7528jquery\u63d0\u4f9b\u7684deferred\u5bf9\u8c61\uff0c\u5728\u300ajquery Deferred\u5bf9\u8c61 \u5ef6\u8fdf\u5bf9\u8c61<\/a>\u300b\u5728\u6709\u4ecb\u7ecd\uff0c\u5176\u5b9ejquery\u4e2d\u63d0\u4f9b\u7684\u961f\u5217\u51fd\u6570\u4e5f\u53ef\u4ee5\u7b80\u5355\u5b9e\u73b0\u56de\u8c03\u7684\u529f\u80fd\u300ajQuery\u961f\u5217\u51fd\u6570\u540c\u6b65\u6267\u884cqueue()\u3001dequeue()\u3001clearQueue()\u548c.delay()<\/a>\u300b\u3002\u5728\u4e0d\u4e45\u524d\u4ecb\u7ecd\u8fc7\u53e6\u4e00\u4e2a\u5f02\u6b65\u7f16\u7a0b\u63d2\u4ef6\u300ajs\u5f02\u6b65\u6a21\u5757\u4ee5\u53ca\u56de\u8c03\u2013async.js<\/a>\u300b\u3002<\/p>\n

\u4e0d\u7ba1jquery\u7684$.Deferred()\u548casync.js\u4ed6\u4eec\u90fd\u662f\u89e3\u51b3\u4e86\u56de\u8c03\u7684\u95ee\u9898\uff0c\u73b0\u5728\u4ecb\u7ecd\u53e6\u4e00\u6b3e\u63d2\u4ef6jsDeferred.js\uff0c\u5176\u5b9e\u5b83\u7684\u601d\u8def\u548c\u73b0\u5728ES6\u6dfb\u52a0\u7684Promise\u5bf9\u8c61\u601d\u8def\u662f\u76f8\u4f3c\u7684\uff0c\u56e0\u4e3aPromise\/A+\u89c4\u8303\u7684\u5236\u5b9a\u57fa\u672c\u4e0a\u662f\u5960\u5b9a\u5728jsDeferred\u4e0a\u3002<\/p>\n

\u5b98\u7f51\uff1ahttps:\/\/cho45.stfuawsc.com\/jsdeferred\/<\/a><\/p>\n

\u4e0b\u9762\u6765\u4ecb\u7ecdjsDeferred.js\u4f7f\u7528<\/p>\n

 <\/p>\n

\u5b98\u7f51\u6709\u51e0\u4e2a\u7248\u672c\uff0c\u5176\u4e2d\u6709\u4e00\u4e2a\u662f\u57fa\u4e8ejquery\u4e0b\u6269\u5c55\u7684\uff0c\u5982\u679c\u4f60\u7ecf\u5e38\u4f7f\u7528jquery\u7684\u8bdd\u63a8\u8350\u4f7f\u7528jquery\u7248\u672c\u7684<\/p>\n

jsdeferred.jquery\u4e0b\u8f7d\uff1ajsdeferred.jquery<\/a><\/p>\n

\u76ee\u524d\u6d4b\u8bd5\u517c\u5bb9IE7\u4ee5\u4e0a\u6d4f\u89c8\u5668(IE6\u6ca1\u6d4b\u8bd5)<\/p>\n

 <\/p>\n

 <\/p>\n

\u5982\u4f55\u8c03\u7528<\/span><\/p>\n

<script type=\"text\/javascript\" src=\"jsdeferred.js\"><\/script>\r\n<script>\r\n\u65b9\u5f0f\u4e00\uff1a(\u4e2a\u4eba\u559c\u6b22\u8fd9\u79cd\u65b9\u5f0f)\r\nDeferred.define();\r\nnext(function () {\r\n   alert(\"Hello!\");\r\n}).\r\nnext(function () {\r\n   alert(\"World!\");\r\n});\r\n\r\n\u65b9\u5f0f\u4e8c\uff1a\r\nDeferred.next(function () {\r\n  alert(\"Hello!\");\r\n}).\r\nnext(function () {\r\n  alert(\"World!\");\r\n});\r\n\r\n\u65b9\u5f0f\u4e09\uff1a\r\nvar d = new Deferred();\r\n\r\n d.next(function () {\r\n   document.title=1;\r\n }).\r\n next(function () {\r\n   document.title=2;\r\n });\r\n\r\n d.call();\r\n<\/script>\r\n\u81ea\u5df1\u9009\u559c\u6b22\u7684\u65b9\u5f0f\u7528\u5427<\/pre>\n
 <\/p>\n
\u4ee5\u540e\u8bb2\u89e3\u6848\u4f8b\u5c31\u4f7f\u7528\u7b2c\u4e00\u79cd\u65b9\u5f0f\u8bf4\u660e<\/p>\n
next()<\/span>\u961f\u5217\u6267\u884c\uff0c\u7c7b\u4f3c\u56de\u8c03\u4f5c\u7528<\/p>\n
\u4ee5\u5f80\u7684\u5199\u6cd5\u5185\u7f6e\u56de\u8c03\u5d4c\u5957\r\nhttp.get(\"\/foo.json\", function (dataOfFoo) {\r\n  http.get(\"\/bar.json\", function (dataOfBar) {\r\n     http.get(\"\/baz.json\", function (dataOfBaz) {\r\n           alert([dataOfFoo, dataOfBar, dataOfBaz]);\r\n     });\r\n  });\r\n});\r\n\r\n\r\nnext(function () {\r\n return http.get(\"\/foo.json\").next(function (data) {\r\n    results.push(data);\r\n });\r\n}).\r\nnext(function () {\r\n return http.get(\"\/baz.json\").next(function (data) {\r\n    results.push(data);\r\n });\r\n}).\r\nnext(function () {\r\n return http.get(\"\/baz.json\").next(function (data) {\r\n    results.push(data);\r\n });\r\n}).\r\nnext(function () {\r\n  alert(results);\r\n});\r\n\r\n\/\/next\u5199\u6cd5\u81f3\u5c11\u6bd4\u7b2c\u4e00\u79cd\u5199\u6cd5\u6e05\u6670\u591a\u4e86<\/pre>\n
 <\/p>\n
\u00a0\u6570\u636e\u4f20\u9012<\/span><\/p>\n
next(function(){\r\n  alert(1);\r\n  return [1,2]  \/\/\u53ea\u6709reture\u624d\u80fd\u628a\u6570\u636e\u4f20\u9012\u7ed9\u4e0b\u4e00\u4e2a\u51fd\u6570\r\n}).\r\nnext(function(data){\r\n  console.log(data);  \/\/\u8fd9\u91ccdata\u5c31\u662f\u83b7\u53d6\u5230\u4e0a\u4e00\u6b65return\u51fa\u6765\u7684\u6570\u636e[1,2]\r\n});<\/pre>\n
 <\/p>\n
\u00a0parallel()<\/span> \u5408\u5e76\u56de\u8c03<\/p>\n
parallel(fn)\u3001parallel([])\u3001parallel({}) \u00a0\/\/\u652f\u63013\u4e2d\u683c\u5f0f<\/p>\n
parallel(\r\n  function(){ return 1; },\r\n  function(){ return 2; },\r\n  function(){ return 3; }\r\n).next(function(data){\r\n  console.log(data);  \/\/[1,2,3]\r\n});\r\n\r\n-----------------\r\nparallel([\r\n  function(){ return 1; },\r\n  function(){ return 2; },\r\n  function(){ return 3; }\r\n]).next(function(data){\r\n console.log(data); \/\/[1,2,3]\r\n});\r\n\r\n--------------------\r\nparallel({\r\n  foo: next(function () {\r\n    return 1;\r\n  }),\r\n\r\n  bar: next(function () {\r\n    return 2;\r\n  })\r\n}).next(function (values) {\r\n console.log(values);\/\/ => Object { foo=1, bar=2 }\r\n});<\/pre>\n
 <\/p>\n
Error<\/span> \u51fa\u9519\u56de\u8c03<\/p>\n
\u6211\u4eec\u5199\u903b\u8f91\u4ee3\u7801\u5728\u8fdb\u884c\u5224\u65ad\u65f6\u5019\u5982\u679c\u6ee1\u8db3\u6761\u4ef6\u5c31\u7ee7\u7eed\u6267\u884c\uff0c\u5982\u679c\u4e0d\u6ee1\u8db3\u6761\u4ef6\u6216\u8005\u51fa\u9519\u5c31\u6267\u884c\u9519\u8bef\u7684\u56de\u8c03<\/p>\n
next(function () {\r\n  console.log(0);\r\n}).\r\nnext(function () {\r\n  console.log(1);\r\n  throw {err:'\u9519\u4e86'};  \/\/\u629b\u51fa\u9519\u8bef\r\n}).\r\nnext(function () {\r\n  console.log(2);  \/\/\u8fd9\u6b65\u4e0d\u4f1a\u6267\u884c\r\n}).\r\nerror(function (e) {\r\n  console.log(e);  \/\/{err:'\u9519\u4e86'}  \/\/\u5904\u7406\u9519\u8bef\u7684\u56de\u8c03\r\n}).\r\nnext(function () {  \/\/\u7ee7\u7eed\u6267\u884c\r\n  console.log(3);\r\n});<\/pre>\n
 <\/p>\n
wait()<\/span>\u65f6\u95f4\u5ef6\u8fdf\u52a0\u8f7d<\/p>\n
next(function () {\r\n  console.log(0);\r\n  return wait(5);  \/\/5\u79d2\u540e\u624d\u7ee7\u7eed\u6267\u884c\u4e0b\u4e00\u6b65\r\n}).\r\nnext(function () {\r\n  console.log(1);\r\n})<\/pre>\n
 <\/p>\n
\u5d4c\u5957<\/span><\/p>\n
\u00a0next(function () {\r\n    alert(1);   \/\/\u7b2c\u4e00\u6b65\r\n    return next(function () {\r\n              alert(2);  \/\/\u7b2c\u4e8c\u6b65\r\n           }).\r\n           next(function () {\r\n              alert(3);  \/\/\u7b2c\u4e09\u6b65\r\n           });\r\n}).\r\nnext(function () {\r\n     alert(4);   \/\/\u7b2c\u56db\u6b65\r\n});\r\n\r\n\u5982\u679c\u6ca1\u6709 return\r\n\r\nnext(function () {\r\n   alert(1); \/\/\u7b2c\u4e00\u6b65\r\n   next(function () {\r\n                alert(2); \/\/\u7b2c\u4e09\u6b65\r\n          }).\r\n          next(function () {\r\n                alert(3); \/\/\u7b2c\u56db\u6b65\r\n          });\r\n   }).\r\nnext(function () {\r\n alert(4); \/\/\u7b2c\u4e8c\u6b65\r\n});\r\n\r\n<\/pre>\n
 <\/p>\n
loop()<\/span>\u5faa\u73af \u00a0\u7c7b\u4f3cfor\u5faa\u73af<\/p>\n
loop(1000, function (n) {  \/\/n\u7d22\u5f15\u4ece0\u5f00\u59cb\r\n   \/\/ heavy process\r\n});<\/pre>\n
 <\/p>\n
\u00a0call()<\/span> \u00a0\/\/\u53ef\u4ee5\u7406\u89e3\u4e3a\u4e00\u4e2ajsDeferred\u5185\u7f6e\u63d0\u4f9b\u7684\u6267\u884c\u51fd\u6570\u5427\uff01\uff0c\u76f4\u63a5\u4e0a\u6848\u4f8b\u4e0d\u592a\u597d\u8bf4\u660e<\/p>\n
next(function () {\r\n  function pow (x, n) { \/\/\u5b9a\u4e49\u4e86pow\u51fd\u6570\u4f46\u662f\u6ca1\u6267\u884c\r\n     return x+n;\r\n  }\r\n  return call(pow, 2, 10);  \/\/ (\u8981\u6267\u884c\u7684\u51fd\u6570,\u5e26\u5165\u7684\u53c2\u65701,\u5e26\u5165\u7684\u53c2\u65702)\r\n}).\r\nnext(function (n) {\r\n  console.log(n); \/\/12\r\n});\r\n\r\n\r\n\r\ncall(function (text) {\r\n   console.log(text);\/\/=> linkFly\r\n}, 'linkFly');\r\nconsole.log('hello,world!');\/\/ => \u5148\u8f93\u51fa<\/pre>\n
 <\/p>\n
\u5224\u65ad\u67d0\u5b9e\u4f8b\u5316\u7684\u5bf9\u8c61\u662f\u5426\u4e3ajsDeferred\u5185\u7f6e\u7684<\/span><\/p>\n
var obj =new wo();\r\n\r\nDeferred.define();\r\n console.log(Deferred.isDeferred(obj));\/\/=> false\r\n console.log(Deferred.isDeferred(wait(2)));\/\/=> true<\/pre>\n
 <\/p>\n
\u8fd8\u6709\u66f4\u591a\u65b9\u6cd5\u53ef\u4ee5\u53c2\u8003\u5b98\u7f51\u6216\u8005\u4ee5\u4e0b\u7f51\u7ad9<\/p>\n
\u00a0\u4e2d\u6587\u53c2\u8003\uff1ahttp:\/\/www.guudo.cn\/tech\/view\/id\/8359<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"
JavaScript\u5f53\u524d\u6709\u4f17\u591a\u5b9e\u73b0\u5f02\u6b65\u7f16\u7a0b\u7684\u65b9\u5f0f\uff0c\u6700\u4e3a\u8000\u773c\u7684\u5c31\u662fECMAScript 6\u89c4\u8303\u4e2d\u7684Promise […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[11],"tags":[],"class_list":["post-5017","post","type-post","status-publish","format-standard","hentry","category-11"],"_links":{"self":[{"href":"https:\/\/sdeno.com\/index.php?rest_route=\/wp\/v2\/posts\/5017","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/sdeno.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/sdeno.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/sdeno.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/sdeno.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=5017"}],"version-history":[{"count":0,"href":"https:\/\/sdeno.com\/index.php?rest_route=\/wp\/v2\/posts\/5017\/revisions"}],"wp:attachment":[{"href":"https:\/\/sdeno.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=5017"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/sdeno.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=5017"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/sdeno.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=5017"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}