1. clientHeight

JavaScript - scrollTop-scrollHeight-offsetTop-offsetHeight

JavaScript - scrollTop-scrollHeight-offsetTop-offsetHeight

JavaScript - scrollTop-scrollHeight-offsetTop-offsetHeight

clientHeight不计算border 只计算content、padding、横向滚动条的宽度(这个是需要减去的)

 

2.clientTop/Left --- border-top-weight

JavaScript - scrollTop-scrollHeight-offsetTop-offsetHeight

JavaScript - scrollTop-scrollHeight-offsetTop-offsetHeight

3.offsetHeight 

元素的边框、内边距(如果存在且渲染的话),是一个整数。

JavaScript - scrollTop-scrollHeight-offsetTop-offsetHeight

计算:50+60(上下内边距)+2(上下边框)=112

4.scrollHeight

不计算border, 计算padding

JavaScript - scrollTop-scrollHeight-offsetTop-offsetHeight

JavaScript - scrollTop-scrollHeight-offsetTop-offsetHeight

 

 

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