为什么在HTML中使用onClick()是一种不好的做法? [英] Why is using onClick() in HTML a bad practice?
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问题描述
我多次听说在HTML中使用JavaScript事件(如 onClick()
)是一种不好的做法,因为它对语义不利。我想知道它的缺点以及如何修正以下代码?
< a href =#onclick =popup('/ map /',300,300,'map'); return false;> link< / a>
解决方案
您可能正在谈论不显眼的Javascript ,看起来像这样:
< a href =#id =someLink>链接< / a>
与中央JavaScript文件中的逻辑看起来像这样:
$('#someLink')。click(function(){
popup('/ map /',300,300,'map') ;
返回false;
});
优点是
$ ul
I have heard many times that using JavaScript events, such as onClick()
, in HTML is a bad practice, because it's not good for semantics. I would like to know what the downsides are and how to fix the following code?
<a href="#" onclick="popup('/map/', 300, 300, 'map'); return false;">link</a>
解决方案
You're probably talking about unobtrusive Javascript, which would look like this:
<a href="#" id="someLink">link</a>
with the logic in a central javascript file looking something like this:
$('#someLink').click(function(){
popup('/map/', 300, 300, 'map');
return false;
});
The advantages are
- behaviour (Javascript) is separated from presentation (HTML)
- no mixing of languages
- you're using a javascript framework like jQuery that can handle most cross-browser issues for you
- You can add behaviour to a lot of HTML elements at once without code duplication
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