SVG Elements上的事件委派 [英] Event delegation on SVG Elements
问题描述
我正在尝试为我附加到SVG画布的所有元素设置一个公共点击处理程序。但我无法将处理程序委托给新创建的元素。
I am trying to have a common click handler for all the elements I am appending to a SVG canvas. But I cannot delegate the handler to the newly created elements.
这是我试图委托的代码,但没有运气
This is the code I have tried to delegate, but no luck
$("#floor").on('click','.drawnLine', function() {
//#floor is the SVG Element
//.drawnLine is the <line> element that is added dynamically
console.log($(this).data('index'));
});
注意:委派事件不适用于SVG。
Note: Delegated events do not work for SVG.
所以现在问题是这个问题的其他任何解决方法吗?
So now the question is any other workaround for this problem?
推荐答案
当jQuery失败并使用SVG时你可以使用vanilla js 。幸运的是,每个支持svg的浏览器也支持事件监听器。纯js委托事件并不那么难看:
When jQuery fails with SVG you can use vanilla js. Fortunately every browser that supports svg also supports event listeners. The pure js delegated event is not so ugly:
$("#floor")[0].addEventListener('click', function(e) {
// do nothing if the target does not have the class drawnLine
if (!e.target.classList.contains("drawnLine")) return;
console.log($(this).data('index'));
});
但您也可以创建自己的功能,以更干净地委派您的活动。
But you can also create your own function to delegate your events more cleanly.
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