83 lines
2.6 KiB
HTML
83 lines
2.6 KiB
HTML
<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="UTF-8">
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<meta http-equiv="X-UA-Compatible" content="IE=edge">
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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<title>Document</title>
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<style>
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.box{
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width: 500px;
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height: 500px;
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border: 1px solid black;
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}
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.box1{
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width: 300px;
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height: 300px;
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background: pink;
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}
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.box2{
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width: 100px;
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height: 100px;
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background: gold;
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}
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</style>
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</head>
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<body>
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<div class="box">
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<div class="box1" >
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<div class="box2"></div>
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</div>
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</div>
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<div>
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总结：点击box2时，会接连触发 box() -> box1() -> box2() 整个过程叫做捕获（从外往里）
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冒泡和捕获不会同时发生
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<p>addEventListener 能给目标元素添加多个事件</p>
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<p> 阻止捕获： event.stopImmediatePropagation() event.stopPropagation()</p>
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<p>stopImmediatePropagation和stopPropagation 都能阻止捕获，但是同一个元素有多个同类型事件的时候，stopPropagation不能阻止其他事件的发生
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stopImmediatePropagation能阻止其他事件发生的 </p>
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</div>
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<script>
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var boxdj=document.getElementsByClassName('box')[0]
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boxdj.addEventListener("click", function (){
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console.log("box被点击了")
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event.stopImmediatePropagation()
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},true)
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boxdj.addEventListener("click", function (){
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console.log("box被点击了2！！！！！")
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event.stopImmediatePropagation()
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},true)
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var box1dj=document.getElementsByClassName('box1')[0]
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box1dj.addEventListener("click", function (){
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console.log("box1被点击了")
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event.stopPropagation()
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},true)
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var box2dj=document.getElementsByClassName('box2')[0]
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box2dj.addEventListener("click", function (){
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console.log("box2被点击了")
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event.stopImmediatePropagation()
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},true)
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function box(){
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console.log("box被点击了")
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}
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function box1(){
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console.log("box1被点击了")
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return
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}
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function box2(){
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console.log("box2被点击了")
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event.stopImmediatePropagation();
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}
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function box3(){
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console.log("box1被点击了2")
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event.stopPropagation();
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}
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</script>
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</body>
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</html> |