code not work - auto add class using javascript

Question

I get this code from StackOverflow its working good u see example in Jsfiddle and press F12 and see the console.

https://jsfiddle.net/ohari5336/L2r8x9fh/

but when I set this code in my code then it's not work

```https://jsfiddle.net/ohari5336/9Lcy0mnf/```

please, anyone helps me.

Answer 1

我看到您正在向 SVG 元素添加类，根据这篇文章，您不能为此使用 addClass()，而是使用 attr('class', 'class-name')。