鼠标事件
click：单击
dblclick：双击
mousedown：鼠标按下
mouseup：鼠标抬起
mouseover：鼠标悬浮
mouseout：鼠标离开
mousemove：鼠标移动
mouseenter：鼠标进入
mouseleave：鼠标离开
<button onclick="myClick()">鼠标单击</button>
<button ondblclick="myDBClick()">鼠标双击</button>
<button onmousedown="myMouseDown()" onmouseup="myMouseUp()">鼠标按下和抬起</button>
<button onmouseover="myMouseOver()" onmouseout="myMouseOut()">鼠标悬浮和离开</button>
<button onmousemove="myMouseMove()">鼠标移动</button>
<button onmouseenter="myMouseEnter()" onmouseleave="myMouseLeave()">鼠标进入和离开</button>
<script>
function myClick() {
console.log("你单击了按钮！");
}
function myDBClick() {
console.log("你双击了按钮！");
}
function myMouseDown() {
console.log("鼠标按下了！");
}
function myMouseUp() {
console.log("鼠标抬起了！");
}
function myMouseOver() {
console.log("鼠标悬浮！");
}
function myMouseOut() {
console.log("鼠标离开！")
}
function myMouseMove() {
console.log("鼠标移动！")
}
function myMouseEnter() {
console.log("鼠标进入！")
}
function myMouseLeave() {
console.log("鼠标离开！")
}
键盘事件
keydown：按键按下
keyup：按键抬起
keypress：按键按下抬起
<body>
<input id="name" type="text" onkeydown="myKeyDown(this.id)" onkeyup="myKeyUp(this.id)">
</body>
<script>
/*输出输入的字符*/
function myKeyDown(id) {
console.log(document.getElementById(id).value);
}
/*按键结束，字体转换为大写*/
function myKeyUp(id) {
var text = document.getElementById(id).value;
document.getElementById(id).value = text.toUpperCase();
}
</script>
HTML事件
load：文档加载完成
select：被选中的时候
change：内容被改变
focus：得到光标
resize：窗口尺寸变化
scroll：滚动条移动
<body onload="loaded()">
<div style="height: 3000px" ></div>
<input type="text" id="name" onselect="mySelect(this.id)">
<input type="text" id="name2" onchange="myChange(this.id)">
<input type="text" id="name3" onfocus="myFocus()">
</body>
<script>
window.onload = function () {
console.log("文档加载完毕！");
};
/*window.onunload = function () {
alert("文档被关闭！");
};*/
/*打印选中的文本*/
function mySelect(id) {
var text = document.getElementById(id).value;
console.log(text);
}
/*内容被改变时*/
function myChange(id) {
var text = document.getElementById(id).value;
console.log(text);
}
/*得到光标*/
function myFocus() {
console.log("得到光标！");
}
/*窗口尺寸变化*/
window.onresize = function () {
console.log("窗口变化！")
};
/*滚动条移动*/
window.onscroll = function () {
console.log("滚动");
}
</script>
事件模型：
<body>
<!--脚本模型：行内绑定-->
<button onclick="alert('hello')">hello</button>
<!--内联模型-->
<button onclick="showHello()">hello2</button>
<!--动态绑定-->
<button id="btn">hello3</button>
</body>
<script>
function showHello() {
alert("hello");
}
/*DOM0：同一个元素只能添加一个同类事件
* 如果添加多个，后面的会把前面的覆盖掉*/
var btn = document.getElementById("btn");
btn.onclick = function () {
alert("hello");
};
btn.onclick = function () {
alert("hello world");
};
/*DOM2:可以给一个元素添加多个同类事件*/
btn.addEventListener("click", function () {
alert("hello1");
});
btn.addEventListener("click", function () {
alert("hello2");
});
/*不同浏览器的兼容写法*/
/*IE*/
if (btn.attachEvent) {
btn.attachEvent("onclick", function () {
alert("hello3");
});
/*W3C*/
} else {
btn.addEventListener("click", function () {
alert("hello4");
})
}
</script>
事件冒泡与事件捕获：
<style>
#div1{
width: 400px;
height: 400px;
background-color: #0dfaff;
}
#div2{
width: 300px;
height: 300px;
background-color: #33ff66;
}
#div3{
width: 200px;
height: 200px;
background-color: #fff24a;
}
#div4{
width: 100px;
height: 100px;
background-color: #ff4968;
}
</style>
<title>事件冒泡、事件捕获</title>
</head>
<body>
<div id="div1">
<div id="div2">
<div id="div3">
<div id="div4">
</div>
</div>
</div>
</div>
</body>
<script>
var div1 = document.getElementById("div1");
div1.addEventListener("click",function (event) {
/*阻止事件冒泡*/
event.stopPropagation();
alert("div1");
},false);
var div2 = document.getElementById("div2");
div2.addEventListener("click",function (event) {
/*阻止事件冒泡*/
event.stopPropagation();
alert("div2");
},false);
var div3 = document.getElementById("div3");
div3.addEventListener("click",function (event) {
/*阻止事件冒泡*/
event.stopPropagation();
alert("div3");
},false);
var div4 = document.getElementById("div4");
div4.addEventListener("click",function (event) {
/*阻止事件冒泡*/
event.stopPropagation();
alert("div4");
},false);
</script>
阻止默认事件：
<body>
<a href="http://www.baidu.com" onclick="stop(event)">百度</a>
</body>
<script>
function stop(event) {
if (event.preventDefault()) {
event.preventDefault();
} else {
event.returnValue = false;
}
alert("不跳转！")
}
</script>
