双驱动onblur事件 [英] double actuating onblur event

问题描述

我的JavaScript code，这一次应该在重心的转移被执行。一切正常，但这code进行了两次一些奇怪的原因，所以我举两个警报窗口。

I have javascript code, which should be executed once at focus shift. Everything works, but this code is carried out two times for some strange reason, thus I give TWO alert windows.

$(document).ready(function() {
    $('#username').blur(function() {

        var formData = {
            "username":$('#username').val()
        };

        $.ajax({
            url:'check.php',
            type:'POST',
            data:'jsonData=' + $.toJSON(formData),
            success: function(res) {
                alert(res);
            }

        });
    });
});

我是什么做错了吗？

What am I doing wrong?

推荐答案

我感动#username格，一切工作过，因为它应该在此之前code。

I moved this code before #username div and everything have worked as it should.

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