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jQuery代码在CodeIgniter中不起作用

[英]jQuery code doesn't work in CodeIgniter

I'm trying to do following with jQuery: 我正在尝试使用jQuery:

<head>
    <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.3/jquery.min.js"></script>

    <script> 
        $('#test').hover(function(){
            alert('sub');
        });
    </script>
</head>

Thanks. 谢谢。

I'm assuming that HTML DOM element with id="test" exists. 我假设存在id="test" HTML DOM元素。

<head>
    <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.3/jquery.min.js"></script>

    <script>
        $(function() {
            $('#test').hover(function() {
                alert('sub');
            });
        });
    </script>
</head>

By the way, CodeIgniter has nothing to do with your issue. 顺便说一句,CodeIgniter与您的问题无关。

Seems like you are accessing an element which does not exists. 似乎您正在访问不存在的元素。

Try this: 尝试这个:

<head>
    <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.3/jquery.min.js"></script>

    <script>
        $(document).ready(function() {
            $('#test').hover(function() {
                alert('sub');
            });
        });
    </script>
</head>

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