更改 CSS “transform” 中的 “scale” 属性

Question

I have the following div

<div style="transform-origin: left top 0px; transform: translate3d(0px, -26px, 0px) scale(1);">

As you can see, transform contains scale(1) . What's the best way to change scale value?

Thank you for your help.

Answer 1

Sure, using javascript. There are many ways to do it, I'd do it using a regex.

function changeScale(newScale){
    var div = document.getElementById('theID');
    var curTrans = div.style.transform;
    var newScaleString = 'scale(' + newScale + ')';
    var regex = /scale\([0-9|\.]*\)/;
    var newTrans = curTrans.replace(regex, newScaleString);
    div.style.transform = newTrans;
}

Or with less lines:

function changeScale(newScale){
    var div = document.getElementById('theID');
    div.style.transform = div.style.transform.replace(/scale\([0-9|\.]*\)/, 'scale(' + newScale + ')');
}

Answer 2

您可以使用正则表达式（假设您的 div DOM 元素位于变量“el”中，并且想要将比例更改为 2）：

el.style.transform.replace(/scale\(\d+\)/, 'scale(2)');