tryjquery_deferred_done 在线代码实例

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运行代码

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<!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>
<button>Go</button>
<p>准备...</p>
<script>
$(function () { 
    // 当Deferred对象被解决时，3个函数被调用
    function fn1() {
        $( "p" ).append( " 1 " );
    }
    function fn2() {
        $( "p" ).append( " 2 " );
    }
    function fn3( n ) {
        $( "p" ).append( n + " 3 " + n );
    } 
    //创建一个deferred对象
    var dfd = $.Deferred();
    // 添加当dfd解决时被调用的处理程序
    dfd
    // .done() 可以获取函数或函数数组的数量
        .done( [ fn1, fn2 ], fn3, [ fn2, fn1 ] )
    // 我们也可以连接其他的方法
        .done(function( n ) {
            $( "p" ).append( n + " 已完成。" );
      });
    // 当按钮被点击时修改状态为已完成
    $( "button" ).on( "click", function() {
        dfd.resolve( "和" );
    });
 
 
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运行结果
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