后台字符串转化成json

function remotecontrol() {
    var progressbar = $("#progressbar");
    $.ajax({
        url: myurl,
        type: mytype,
        data: mydata,
        contentType: commonType,
        dataType: jsonType,
        success: function (data) {
            var ret = data.d.replace(/\r\n/ig, "<br \/>");
            var obj = eval('(' + ret + ')'); //转换后的JSON对象
            //if (obj.success) {
            progressbar.progressbar("value", 100);
            $('#dlgprogress').dialog('close');
            inittabled(obj);
            $('#dlg').dialog('open').dialog('setTitle', '操作结果');
        },
        error: function () {
            $('#dlgprogress').dialog('close');
        }
    });

}