javascript css检查溢出 [英] javascript css check if overflow
问题描述
检测一个元素是否溢出是什么的简单方法?
What's the easist way to detect if an element has been overflowed?
我的用例是,我想限制某个内容框的高度为300px 。如果内容比这高,我用溢出切掉它。但是如果它溢出,我想显示一个更多按钮,但如果不是我不想显示该按钮。
My use case is, I want to limit a certain content box to have a height of 300px. If the inner content is taller than that, I cut it off with an overflow. But if it is overflowed I want to show a 'more' button, but if not I don't want to show that button.
有一个简单的方法来检测溢出,还是有更好的方法?谢谢。
Is there an easy way to detect overflow, or is there a better method? Thanks.
推荐答案
如果DOM元素溢出,此函数将返回布尔值:
This function will return you boolean value if the DOM element is overflowed:
function isOverflowed(element){
return element.scrollHeight > element.clientHeight || element.scrollWidth > element.clientWidth;
}
元素可能会垂直或水平溢出或两者都溢出
The element may be overflowed vertically or horizontally or both
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