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
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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