用ajax获取后台数据,返回json数据,怎么在前台使用呢?
后台
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if (dataType == "SearchCustomer")                {                    int ID;                    if (Int32.TryParse(CustomerID, out ID))                    {                        string s = GridComputer.GridCustomer.getCustomer(1, 1, ID);                        if (s == null)                        {                            context.Response.ContentType = "text/plain";                            context.Response.Write("[{\"name\":无用户,\"id\":\"0\",\"company\":\"无用户\"}]");                        }                        else { context.Response.Write(s); }                    }                }  | 
前台
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 $(document).ready(function () {            $("#Button3").click(        function (SucCallback) {            $.ajax(            {                type: "get",                url: ‘GridDatas.ashx‘, //后台处理程序                   dataType: ‘json‘,     //接受数据格式                    data: ‘DataType=SearchCustomer&CustomerID=‘ + document.getElementById("Text3").value,         //要传递的数据                    success:SucCallback,                error: function () { alert("error"); }            });        })        }) | 
参考代码
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grid.getCustomer(1,2,function (data) {        var list = ‘<p>‘ + tree_GridInfo._name + ‘的用户有</p><br>‘;        list += ‘<table id="customers"><tr><th>姓名</th><th>电话</th></tr> ‘;        $.each(data, function (i, n) {            list += ‘<tr onclick="showUser(‘ + 1 + ‘)"><td>‘;            list += n.name + ‘</td>‘ + ‘<td>‘ + n.company;            list += ‘</td></tr>‘;        });        $("#SearchResult").html(list) | 
原文:http://www.cnblogs.com/aivnfjgj/p/6250215.html