App下載
實(shí)例代碼( Tip: 登錄后體驗(yàn)更佳 )
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>W3Cschool在线教程(w3cschool.cn)</title>  
<script src="/statics/js/jquery-1.8.3.min.js"></script>
</head>
<body>
<script>
$(function () { 
    function fn1( value ) {
      alert( value );
      return false;
    }
     
    function fn2( value ) {
      fn1( "fn2 says: " + value );
      return false;
    }
    var topics = {};
    jQuery.Topic = function( id ) {
        var callbacks,
            method,
            topic = id && topics[ id ];
     
        if ( !topic ) {
            callbacks = jQuery.Callbacks();
            topic = {
                publish: callbacks.fire,
                subscribe: callbacks.add,
                unsubscribe: callbacks.remove
            };
            if ( id ) {
                topics[ id ] = topic;
            }
        }
 
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