jQuery Ajax响应和变量分配问题

问题描述

我在$(document).ready块中有以下代码:

I have the following code inside $(document).ready block:

$.ajax({
    type: "POST",
    url: "Test.aspx/CheckType",
    data: "{}",
    contentType: "application/json; charset=utf-8",
    dataType: "json",
    success: function (response) {
        if (response.d == true) {
            user = true;
        }
        else {
            user = false;
        }
    },
    error: function () {
        alert("ERROR");
    }
});


if (user) {
    // code that doesn't execute
}
else {
    // code that always executes!!
}

问题在于用户变量未定义，并且始终在else块内执行代码.

The problem is that user variable is undefined and always executes the code inside the else block.

我用FireBug检查了ajax调用是否成功.

I checked with FireBug that the ajax call is successful.

可能是什么问题?

提前谢谢！

推荐答案

最有可能是在返回ajax调用之前读取了用户变量的问题，因此它始终是未定义的，请尝试将if语句放在ajax调用中并以这种方式进行测试.

It's most likely a problem with the user variable being read before the ajax call is returned so it will always be undefined, try placing your if statement inside the ajax call and test it that way.

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