jQuery autocomplete 使用

推荐 ：http://www.cnblogs.com/Peter-Zhang/archive/2011/10/22/2221147.html

eg:

$("#txtGrand").autocomplete("/AjaxHandlers/StudentContractHandler.ashx", {
       multiple: false,
       mustMatch: true,
        140,
       extraParams: { action: "subname", province: '0' },
       parse: function (data) {
           var parsed = [];
           if (data != "") {
               data = eval("(" + data + ")");
               for (var i = 0; i < data.length; i++) {
                   parsed[parsed.length] = {
                       data: data[i],
                       value: data[i].usercode,
                       result: data[i].username //返回的结果显示内容
                   };
               }
           }
           return parsed;
       },
       formatItem: function (row, i, max) {
           return "<div value='" + row.usercode + "' >" + row.userinfo + "</div>";
       },
       formatResult: function (row) {
           return item.usercode;
       }
   }).result(function (event, item, formatted) {//选择后操作
       if (document.getElementById("txtGrand").value != "") {
           $("#visVal").val("");
           $("#txtGrand").val(item.username);
           $("#visVal").val(item.usercode);35        }
   });