JQuery用户名验证 [英] JQuery Username Validation

问题描述

有没有人使用jquery验证和jquery addmethod有一个用户名检查器的工作示例？

Does anyone have a working example of a username checker using jquery validation and jquery addmethod?

这样的事情：

$("#register_form").validate({
    onkeyup:false,
    rules: {
        username: {
            required: true,
            minlength: 3,
            usernameCheck: true    // remote check for duplicate username
        },
});

jQuery.validator.addMethod("usernameCheck", function(username) {
    var isSuccess = false;
    $.ajax({
        url: "username_availability.php",
        data: "username=" + username,
        async: false,
        type: "POST",
        success:
        function(msg) {
            isSuccess = parseInt(msg);
        }
    });
    return isSuccess;
},"");

我已经在谷歌看了好几天了，我注意到了很多线程这个没有答案或没有解决的高视图数。因此，如果有人可以提供链接或解决方案，我相信很多JQuery新手会受益并且很高兴。 ：）

I've been looking all over Google for days, and I've noticed a number of threads like this that go unanswered or unsolved with a high view count. So if someone could provide a link or a solution, I'm sure a lot of JQuery noobs would benefit and be glad. :)

嘿，伙计们，非常感谢你们所有的
帮助。我设法找到了我的
寻找的东西。

Hey guys, thanks a lot for all your help. I managed to find what I was looking for though.

牛奶的例子？真？它存在吗？

The "milk example"? Really? It exists?

- 是的，我的儿子，它存在并且很棒：
http://jquery.bassistance.de/validate/demo/milk/

--Yes my son, it exists and it's awesome: http://jquery.bassistance.de/validate/demo/milk/

推荐答案

我认为你的问题是你返回时没有调用成功方法。您可以将代码更改为：

I think your problem is that the the success method isn't being called by the time you return. You can change your code to be:

jQuery.validator.addMethod("usernameCheck", function(username) {
    var result = $.ajax({
        url: "username_availability.php",
        data: {username: username},
        async: false,
        type: "POST"
    }).responseText;
    return result === '1';
},"");

这篇关于JQuery用户名验证的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！