The content of this article is about how to obtain the scroll bar width in js (code example). It has certain reference value. Friends in need can refer to it. I hope it will be helpful to you.
Idea: By creating an element, do not set a border for the element, then set overflowY:scroll for the element, and then calculate the scroll bar width based on the element's offsetWidth-clientWidth.
Code:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>计算滚动条宽度</title>
</head>
<body>
<script>
// 封装获取滚动条宽度的方法
function getScrollBarWidth() {
var el = document.createElement("p"),
styles = {
width: "100px",
height: "100px",
overflowY: "scroll"
},
i;
// 这里很巧妙呀，先定义了一个styles对象，里面写了各种样式值，然后通过for in将这个对象的值赋给p元素的style对象
// 而不用通过style.width=***等来给p的样式对象赋值。
for (i in styles) {
el.style[i] = styles[i];
}
// 将元素加到body里面
document.body.appendChild(el);
var scrollBarWidth = el.offsetWidth - el.clientWidth;
//将添加的元素删除
el.remove();
return scrollBarWidth;
}
console.log(getScrollBarWidth()); // 注意这里imac得到的结果为0，因为imac的滚动条是没有宽度的。
</script>
</body>
</html>Related recommendations:
What are the implementation methods of JS modularization? Explanation of js modularization
#How to write css animation in js? How to write css animation in js (code)
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