<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title></title>
</head>
<body>
<p id="p1">here</p>
<div id="div1">
<p id="p2">
div+p+bubbing;
</p>
</div>
<div id="div2">
<p id="p3">
div+p+capturing;
</p>
</div>
<button type="button" id="btn1">moveListen</button>
<script type="text/javascript" src="Dom_listen.js">
</script>
</body>
</html>
//不会覆盖已有的事件处理程序 依次执行
document.getElementById("p1").addEventListener("click",clickFun);
function clickFun(){
alert("Hello World");
}
document.getElementById("p1").addEventListener("click",clickFun1);
function clickFun1(){
alert("Hello");
}
//向window对象添加
//当用户调整窗口大小时触发的事件监听器：
window.addEventListener("resize",winFun);
function winFun(){
alert("resize");
}
//事件传播 俩种：冒泡和捕获
//冒泡 先处理内侧再外侧 默认 FALSE
//捕获 先外侧再内侧 true
document.getElementById("div1").addEventListener("click",divFun,false);
document.getElementById("p2").addEventListener("click",pFun,false);
function divFun(){
console.log("div");
}
function pFun(){
console.log("p");
}
document.getElementById("div2").addEventListener("click",divFun,true);
document.getElementById("p3").addEventListener("click",pFun,true);
//移除监听事件
document.getElementById("btn1").addEventListener("click",btnFun);
function btnFun(){
document.getElementById("p1").removeEventListener("click",clickFun);
}
