jQuery中ajax的使用方法

 $(document).ready(function (){
    $('#btnmerge').click(function () {
        var RodNo = $('#RodNo').val();
        $.ajax({
            type: "post",
            dataType: 'json',
            url: "PrecisionstretchMerge",
            data: "RodNo=" + $("#RodNo").val(),
            timeout: 8000,
            success: function (json) {
                    if (json.back) {
                        window.location.href("/Precisionstretch/PrecisionstretchMerge");
                    }
                }
        });
     });
});