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复习.html
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Document</title>
<style>
.test1,.test2,.test3{
width: 200px;
height: 100px;
text-align: center;
line-height: 100px;
color: black;
background-color: aqua;
}
.test2{
background-color: red;
}
.test3{
background-color: blue;
}
</style>
<script>
//js中的最大值
var max_value = Number.MAX_VALUE;
console.log(max_value);
//寻找数组中的最大值
var arr = new Array(1,5,6,10,7,-2),
arr2 = new Array(0,0,0,0);
console.log(Math.min.apply(null,arr));
console.log(arr.concat(arr2));
//找出字符串中指定位置的字符，索引从0开始
var string1 = 'abc123',
string2 = 'def456';
console.log(string1.charAt(1));
console.log(string1.concat(string2));
//在所有DOM元素加载完成以后才执行
window.onload = function(){
var testDiv = document.getElementsByClassName("test1")[0];
var test2Div = document.getElementsByClassName("test2")[0];
var test3Div = document.getElementsByClassName("test3")[0];
var inputText = document.getElementsByTagName("input")[0];
var inputReset = document.getElementsByTagName("input")[1];
console.log(testDiv);
function ck(event){
var x = event.clientX;
var y = event.clientY;
alert("你点击了"+x+" "+y);
}
function ck2(event){
var x = event.screenX;
var y = event.screenY;
alert("你点击了相对于屏幕左上角"+x+" "+y)
}
testDiv.addEventListener('click',ck);
test2Div.onclick = function(){
testDiv.removeEventListener('click',ck);
testDiv.addEventListener('click',ck2);
}
test3Div.onclick = function(){
testDiv.removeEventListener('click',ck2);
testDiv.addEventListener('click',ck);
}
/*testDiv.onmouseover = function(){
console.log("失去焦点");
}
testDiv.onmouseout = function(){
console.log("得到焦点");
}
testDiv.ondblclick = function(){
console.log("点击");
}
testDiv.onmousemove = function(){
console.log("正在移动鼠标");
}*/
console.log(inputText);
/*inputText.onfocus = function(){
this.value = "获得焦点";
}
inputText.onblur = function(){
this.value = "失去焦点";
}*/
inputReset.onreset = function(){
console.log("1");
}
}
</script>
</head>
<body>
<div class="test1">
焦点测试
</div>
<div class="test2">
点击取消第一个的点击事件
</div>
<div class="test3">
点击添加第一个的点击事件
</div>
<form>
<input type="text" placeholder="请填写" />
<input type="reset" value="重置" />
</form>
</body>
</html>