{"id":7251,"date":"2019-02-26T10:54:04","date_gmt":"2019-02-26T02:54:04","guid":{"rendered":"https:\/\/sdeno.com\/?p=7251"},"modified":"2019-02-26T10:56:57","modified_gmt":"2019-02-26T02:56:57","slug":"apply%e3%80%81call%e5%92%8cbind%e5%8c%ba%e5%88%ab","status":"publish","type":"post","link":"https:\/\/sdeno.com\/?p=7251","title":{"rendered":"apply\u3001call\u548cbind\u533a\u522b"},"content":{"rendered":"<p>\u8fd9\u4e09\u8005\u7684\u5171\u540c\u4f5c\u7528\u90fd\u662f\u6539\u53d8\u51fd\u6570\u7684\u73af\u5883\uff0c\u4e5f\u5c31\u662f\u6539\u53d8\u51fd\u6570\u91cc\u9762\u7684this\u3002<\/p>\n<pre>var name='\u5f20'\r\nvar age=18\r\n\r\nvar obj={\r\n name:'\u4e09',\r\n age:17,\r\n}\r\n\r\nfunction test(c1='',c2='') {\r\n    console.log(this.age+c1+c2)\r\n}\r\n\r\ntest(); \/\/18,\u76f4\u63a5\u8c03\u7528this\u662f<\/pre>\n<p>&nbsp;<\/p>\n<p><span style=\"color: #ff0000;\">\u540c<\/span>\uff1a\u5b83\u4eec\u7b2c\u4e00\u53c2\u6570\u90fd\u662f\u8981\u4f20\u5165\u4e00\u4e2a\u5bf9\u8c61<\/p>\n<pre>test.call(obj);  \/\/17\r\ntest.apply(obj); \/\/17\r\ntest.bind(obj)();\/\/17, bind\u8fd4\u56de\u7684\u662f\u4e00\u4e2a\u51fd\u6570\uff0c\u6240\u4ee5\u4e5f\u53ef\u4ee5\u8fd9\u4e48\u5199 (test.bind(obj))()<\/pre>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p><span style=\"color: #ff0000;\">\u5f02<\/span>\uff1a\u4f20\u9012\u7684\u53c2\u6570\u4e0d\u540c<\/p>\n<pre>test.call(obj,'a','b');     \/\/17ab\r\ntest.apply(obj,['a','b']);  \/\/17ab\r\ntest.bind(obj,'a','b')();   \/\/17ab<\/pre>\n<p>&nbsp;<\/p>\n<p><span style=\"color: #ff0000;\">\u603b\u7ed3\uff1a<\/span><\/p>\n<p>\u7b2c\u4e00\u4e2a\u53c2\u6570\u90fd\u4f20\u5bf9\u8c61;<\/p>\n<p>bind\u8fd4\u56de\u7684\u662f\u4e00\u4e2a\u51fd\u6570\uff0c\u5269\u4e0b\u548ccall\u6ca1\u4ec0\u4e48\u533a\u522b;<\/p>\n<p>apply\u548c\u5176\u4ed6\u4e24\u4e2a\u4f20\u9012\u7684\u53c2\u6570\u4e0d\u540c\uff0c\u5b83\u662f\u4f20\u4e00\u4e2a\u6570\u7ec4;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p><audio style=\"display: none;\" controls=\"controls\"><\/audio><\/p>\n<p><audio style=\"display: none;\" controls=\"controls\"><\/audio><\/p>\n<p><audio style=\"display: none;\" controls=\"controls\"><\/audio><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u8fd9\u4e09\u8005\u7684\u5171\u540c\u4f5c\u7528\u90fd\u662f\u6539\u53d8\u51fd\u6570\u7684\u73af\u5883\uff0c\u4e5f\u5c31\u662f\u6539\u53d8\u51fd\u6570\u91cc\u9762\u7684this\u3002 var name=&#8217;\u5f20&#8217; var age= [&hellip;]<\/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-7251","post","type-post","status-publish","format-standard","hentry","category-11"],"_links":{"self":[{"href":"https:\/\/sdeno.com\/index.php?rest_route=\/wp\/v2\/posts\/7251","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=7251"}],"version-history":[{"count":0,"href":"https:\/\/sdeno.com\/index.php?rest_route=\/wp\/v2\/posts\/7251\/revisions"}],"wp:attachment":[{"href":"https:\/\/sdeno.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=7251"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/sdeno.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=7251"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/sdeno.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=7251"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}