jQuery的：如果语句不工作里面的ajax成功函数 [英] jquery: If statement not working inside ajax success function

问题描述

我有一个成功的功能在我的AJAX返回从一个python脚本它可以是成功或空的响应文本。 现在我想将一个如果环成功函数内部，但如果环不工作。我从我的python脚本得到正确的数据，因为我的提醒语句是工作的罚款，并打印成功。但它不进入ifloop

我已经尝试了一堆东西，但控制不进入，如果环，任何人都可以告诉我什么，我做错了：

  submitHandler：功能（形式）{

                $阿贾克斯（{
                    类型：'后'，
                    网址：/cgi-bin/getdataworld.py，
                    数据：$（形式）.serialize（）

                    成功：功能（数据）{
                            //document.write(result）;
                            的console.log（结果为+数据）;
                            警报（数据）;

                            如果（数据===SUCCESS）{
                            了window.location ='的index.html';
                               }
                           其他{
                                 警报（NO DATA preSENT）;
                               }


                    }，

                    错误：函数（responseData）{
                的console.log（'Ajax请求没有收到！）;
            }

                }）;

                返回false;
            }
 

解决方案

这意味着，你回答什么是不是SUCCESS。它可能有前或换行或其他的空白后，可能不止一个。

也许

 如果（/^\s*SUCCESS\s*$/.test(data））{
    // 成功
}
 

或者使用jQuery的 $修剪：

 如果（$ .trim（数据）===SUCCESS）{
    // 成功
}
 

另外要确保你不被成功或成功，答复为字符串比较是区分大小写的。

如果你不知道：

 如果（/^\s*SUCCESS\s*$/i.test(data））{
    // 成功
}
 

或

 如果（$ .trim（数据）.toUpperCase（）===SUCCESS）{
    // 成功
}
 

I have a success function in my AJAX which returns the response text from a python script which can be either "SUCCESS" or "EMPTY". Now I want to place an if-loop inside the success function, but the if-loop is not working. I am getting the correct data from my python script because my alert statement is working fine and printing "SUCCESS". But it does not enter the ifloop

I have tried a bunch of things but the control is not entering the if-loop, could anyone please tell me what I am doing wrong:

submitHandler: function (form) {

                $.ajax({
                    type: 'post',
                    url: '/cgi-bin/getdataworld.py',
                    data: $(form).serialize(),

                    success: function(data) {
                            //document.write(result);
                            console.log("result is "+data);
                            alert(data);

                            if(data === "SUCCESS"){
                            window.location = 'index.html';
                               }
                           else{
                                 alert("NO DATA PRESENT");
                               }


                    },

                    error: function (responseData) {
                console.log('Ajax request not recieved!');
            }

                });

                return false;
            }

解决方案

This means that what you're responding with isn't "SUCCESS". It probably has a line break or other whitespace before or after it, maybe more than one.

Perhaps:

if (/^\s*SUCCESS\s*$/.test(data)) {
    // Success
}

Or use jQuery's $.trim:

if ($.trim(data) === "SUCCESS") {
    // Success
}

Also be sure that you're not replying with "Success" or "success", as string comparisons are case-sensitive.

If you're not sure:

if (/^\s*SUCCESS\s*$/i.test(data)) {
    // Success
}

or

if ($.trim(data).toUpperCase() === "SUCCESS") {
    // Success
}

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