{"id":86578,"date":"2020-05-15T01:18:49","date_gmt":"2020-05-14T17:18:49","guid":{"rendered":"http:\/\/4563.org\/?p=86578"},"modified":"2020-05-15T01:18:49","modified_gmt":"2020-05-14T17:18:49","slug":"node-eventemitter","status":"publish","type":"post","link":"http:\/\/4563.org\/?p=86578","title":{"rendered":"node EventEmitter"},"content":{"rendered":"<div>\n<div>\n<div>\n<h1>                  node EventEmitter               <\/h1>\n<p> <\/p>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : TomVista <\/span>  <span><i><\/i> 0<\/span> <\/div>\n<div> <\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<div isfirst=\"1\"> <\/p>\n<p>\u60f3\u5728 event.emmit(&#8216;eventName&#8217;) \u6267\u884c\u5b8c\u5f02\u6b65\u4e8b\u4ef6\u4e4b\u540e \u89e6\u53d1\u4e00\u4e2a end \u4e8b\u4ef6,\u600e\u4e48\u505a?<\/p>\n<p>\u66b4\u9732 event \u7ed9 listener \u5417?<\/p>\n<pre><code>const event = new (require('events').EventEmitter) event.on('name',(event)=&gt;{  \/\/ dosomething     setTimeout(()=&gt;{         ...         event.emmit('nameEnd')     },100)      })  event.on('nameEnd',()=&gt;{  console.log(name) })  event.emmit('name',event) <\/code><\/pre>\n<\/p><\/div>\n<div> <b>\u5927\u4f6c\u6709\u8a71\u8aaa<\/b> (<span>1<\/span>)        <\/div>\n<div> <\/div>\n<\/p><\/div>\n<\/p><\/div>\n<ul>\n<li data-pid=\"1560729\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : JayLin1011 <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             const EventEmitter = require(&#8216;events&#8217;);<\/p>\n<p>const event = new EventEmitter();<\/p>\n<p>event.on(&#8216;eventEnd&#8217;, () =&gt; {<br \/> console.log(&#8216;\u7570\u6b65\u4e8b\u4ef6\u57f7\u884c\u5f8c\u89f8\u767c eventEnd \u4e8b\u4ef6&#8217;);<br \/>});<\/p>\n<p>event.on(&#8216;eventAsync&#8217;, function () {<br \/> setImmediate(() =&gt; {<br \/> console.log(&#8216;\u7570\u6b65\u4e8b\u4ef6\u89f8\u767c&#8217;);<br \/> \/\/ to do&#8230;<br \/> this.emit(&#8216;eventEnd&#8217;);<br \/> });<br \/>});<\/p>\n<p>event.emit(&#8216;eventAsync&#8217;);                                                            <\/p><\/div>\n<\/p><\/div>\n<\/li>\n<li>\n","protected":false},"excerpt":{"rendered":"<p>node EventEmitter&hellip;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[],"tags":[],"_links":{"self":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/86578"}],"collection":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=86578"}],"version-history":[{"count":0,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/86578\/revisions"}],"wp:attachment":[{"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=86578"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=86578"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=86578"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}