小數scrollHeight？

Question

https://developer.mozilla.org/en-US/docs/Web/API/element.scrollHeight?redirectlocale=en-US&redirectslug=DOM%2Felement.scrollHeight：

"This property will round the value to an integer. If you need a fractional value, use element.getBoundingClientRect()." 

除非...... 「element.getBoundingClientRect（）」 不返回scrollHeight屬性。如何獲得分數的scrollHeight？可能嗎？

Answer 1

我想我可能有解決方案：

var rect = element.getBoundingClientRect() 
var scrollHeight = element.scrollHeight + (parseInt(rect.height) - rect.height) 
var scrollWidth = element.scrollWidth + (parseInt(rect.width) - rect.width)