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  • Deferred解决JS同步问题

     测试脚本:

    <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
    <html xmlns="http://www.w3.org/1999/xhtml">
    <head runat="server">
        <title></title>
        <script src="js/jquery-1.7.2.min.js"></script>
        <script type="text/javascript">
            function getData3(){       
                var defer = $.Deferred();
                $.ajax({
                    url: 'v.aspx',
                    //async : false, 
                    cache: false,
                    success: function (data) {
                    defer.resolve(data)
                }
                });        
                return defer.promise();
            }
    
    
            $(document).ready(function () {
                $('.loadingicon').hide();
                $('#statm').click(function () {
                $('.loadingicon').show();
                $.when(getData3()).done(function(data){
                    $('.loadingicon').hide();
                    alert(data);
                });
                });
    
    
                var iii = 0;
                setInterval(function () {
                    iii += 1;
                    $("#sp").text(iii);
    
                }, 1000);
    
            });
    
        </script>
    </head>
    <body>
        <form id="form1" runat="server">
            <input  type="button" value="button"  id="statm" />
            <div class=".loadingicon">正在获取</div>
            <span id="sp"></span>
        </form>
    </body>
    </html>
    

      

    参考页面:

    http://www.cnblogs.com/aaronjs/p/3348569.html

    http://www.111cn.net/wy/jquery/61811.htm

    http://www.oschina.net/question/157182_49050

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  • 原文地址:https://www.cnblogs.com/LCX/p/4266654.html
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