Ajax的异步虚实德precated？ [英] Ajax async false is deprecated?

问题描述

荫使用jQuery 1.7和我用我的AJAX requete 异步：假但我学会在互联网这个功能是去precated我需要使用回调，但不工作

Iam use jQuery 1.7 and i use for my ajax requete async:false but i learn in internet this function is deprecated i need to use callback but not work

$("#form").submit(function(e) {
var cnf;

$.ajax({
    type: "POST", 
    url: 'page.php', 
    data: $('#form').serialize(),
    async: true,
    success: function(responseText) { 
        if(responseText.indexOf('err') != -1) {
            cnf = "error";
        } 
        else {
            cnf = "success";
        }
        return callBack( cnf );
    }, 
    error: function() {
        cnf = "error";  
        return callBack( cnf ); 
    } 
});


if(cnf == "success")
{
   alert('ok');
}
});

在HTML

<form id="form">
 <input type="text" name="email">
 <input type="submit">
</form>

如果我使用异步：假所有的好，回调这里我<看到了一个解决方案href=\"http://stackoverflow.com/questions/11576176/wait-for-a-jquery-ajax-callback-from-calling-function\">wait从调用一个jQuery AJAX回调函数

If i use async: false all its good, for callBack i see the solution here wait for a jquery ajax callback from calling function

感谢您

推荐答案

从注​​释继续：你似乎是用的回调的，有点痴迷，当你似乎并不需要任何！ ：）

Continuing from the comments: You seem to be a little obsessed with callbacks, when you don't seem to need any! :)

到现有code的简单变化是扔掉 CNF ，简单地把你的code在Ajax调用成功的一部分：

The simple change to your existing code is to throw away cnf and simply put your code in the success part of the ajax call:

$("#form").submit(function (e) {
    $.ajax({
        type: "POST",
        url: 'page.php',
        data: $('#form').serialize(),
        async: true,
        success: function (responseText) {
            if (responseText.indexOf('err') != -1) {
                // Do something when it fails here
            } else {
                // Do something when it succeeds here!!!!
                alert('ok');
                // e.g. move on to "step 2"
            }
        },
        error: function () {
           // Do something when it fails here
        }
    });
});

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