节点
查找父节点
代码语言：javascript
复制<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>薪资想过万，代码敲三遍</title>
</head>
<body>
<div class="yeye">
<div class="father">
<div class="son"></div>
</div>
</div>
<script>
const son = document.querySelector('.son')
// 获取父亲节点
console.log(son.parentNode);
// 获取爷爷节点
console.log(son.parentNode.parentNode);
</script>
</body>
</html>
查找子节点
代码语言：javascript
复制<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>薪资想过万，代码敲三遍</title>
</head>
<body>
<ul>
<li>1</li>
<li>2</li>
<li>3</li>
<li>4</li>
<li>5</li>
</ul>
<script>
const ul = document.querySelector('ul')
// 获取所有子节点（包括空格等等）
console.log(ul.childNodes);
// 获取所有子元素节点
console.log(ul.children);
// 获取第一个子元素节点
console.log(ul.children[0]);
</script>
</body>
</html>
查找兄弟节点
代码语言：javascript
复制<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>薪资想过万，代码敲三遍</title>
</head>
<body>
<ul>
<li>1</li>
<li>2</li>
<li class="item">3</li>
<li>4</li>
<li>5</li>
</ul>
<script>
const item = document.querySelector('.item')
// 获取上一个兄弟节点
console.log(item.previousElementSibling);
// 获取下一个兄弟节点
console.log(item.nextElementSibling);
</script>
</body>
</html>
创建增加节点
代码语言：javascript
复制<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>薪资想过万，代码敲三遍</title>
</head>
<body>
<ul>
<li>我是原来的1</li>
<li>我是原来的2</li>
</ul>
<ol>
<li>键盘敲烂</li>
<li>月薪过万</li>
</ol>
<script>
// 创建节点
const newLi = document.createElement('li')
const ul = document.querySelector('ul')
// 追加节点 ：父元素.appendChild(要添加的元素)（作为最后一个元素添加)
// ul.appendChild(newLi)
// 追加节点 ：父元素.insetBefore(要添加的元素，在哪个元素前面) （父元素中指定的位置）
ul.insertBefore(newLi, ul.children[1])
// 移动节点
const ol = document.querySelector('ol')
ol.insertBefore(ol.children[1], ol.children[0])
</script>
</body>
</html>
克隆节点
代码语言：javascript
复制<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>薪资想过万，代码敲三遍</title>
</head>
<body>
<ul>
<li>苹果</li>
<li>香蕉</li>
<li>梨</li>
</ul>
<hr>
<ol>
</ol>
<script>
// 获取苹果节点
const a = document.querySelector('ul').children[0]
// console.log(a);
// 克隆苹果节点
// cloneNode(false或不写)默认克隆标签，cloneNode(true)克隆标签和内容
const newA = a.cloneNode(true)
// 将苹果节点添加到ol列表
document.querySelector('ol').appendChild(newA)
</script>
</body>
</html>
删除节点
代码语言：javascript
复制<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>薪资想过万，代码敲三遍</title>
</head>
<body>
<ul>
<li>没用了</li>
</ul>
<script>
const ul = document.querySelector('ul')
// 删除元素
// ul.removeChild(ul.children[0])
// 清空元素
ul.innerHTML = ''
</script>
</body>
</html>
移动端触摸事件
代码语言：javascript
复制<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>薪资想过万，代码敲三遍</title>
<style>
.box {
width: 200px;
height: 200px;
background-color: pink;
}
</style>
</head>
<body>
<div class="box"></div>
<script>
const box=document.querySelector('.box')
// 1.触屏事件 touchstart
box.addEventListener('touchstart',function(){
console.log('触摸了');
})
// 2.手指离开 touchend
box.addEventListener('touchend',function(){
console.log('手指离开了');
})
// 3.来回触摸 touchmove
box.addEventListener('touchmove',function(){
console.log('来回触摸');
})
</script>
</body>
</html>
swiper插件
代码语言：javascript
复制<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>薪资想过万，代码敲三遍</title>
<link rel="stylesheet" href="./swiper8/swiper-bundle.css">
<style>
.box {
width: 800px;
height: 300px;
background-color: hotpink;
margin: 0 auto;
}
.swiper {
width: 100%;
height: 100%;
}
.swiper-slide {
text-align: center;
font-size: 18px;
background: #fff;
/* Center slide text vertically */
display: -webkit-box;
display: -ms-flexbox;
display: -webkit-flex;
display: flex;
-webkit-box-pack: center;
-ms-flex-pack: center;
-webkit-justify-content: center;
justify-content: center;
-webkit-box-align: center;
-ms-flex-align: center;
-webkit-align-items: center;
align-items: center;
}
.swiper-slide img {
display: block;
width: 100%;
height: 100%;
object-fit: cover;
}
</style>
</head>
<body>
<div class="box">
<!-- Swiper -->
<div class="swiper mySwiper">
<div class="swiper-wrapper">
<div class="swiper-slide">Slide 1</div>
<div class="swiper-slide">Slide 2</div>
<div class="swiper-slide">Slide 3</div>
<div class="swiper-slide">Slide 4</div>
<div class="swiper-slide">Slide 5</div>
<div class="swiper-slide">Slide 6</div>
<div class="swiper-slide">Slide 7</div>
<div class="swiper-slide">Slide 8</div>
<div class="swiper-slide">Slide 9</div>
</div>
<div class="swiper-pagination"></div>
</div>
</div>
<script src="./swiper8/swiper-bundle.js"></script>
<script>
var swiper = new Swiper(".mySwiper", {
pagination: {
el: ".swiper-pagination",
},
autoplay: true
});
</script>
</body>
</html>
window对象
代码语言：javascript
复制<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>薪资想过万，代码敲三遍</title>
</head>
<body>
<script>
// window对象是顶级对象，document是window的属性
console.log(window.document === document);
console.log(window.console === console);
// alert()是window的方法
console.log(window.alert === alert);
// window对象下的这些属性和方法，window可以省略不写
// window对象是全局对象
// 使用var在全局作用域声明的变量，是window对象的属性
var abc = 'abc'
var aoe = 'aoe'
console.log(window);
// 在全局作用域声明的函数，是window对象的方法
function fn() {
console.log('fn');
}
console.log(window);
window.fn()
</script>
</body>
</html>
定时器（延迟函数）
代码语言：javascript
复制<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>薪资想过万，代码敲三遍</title>
</head>
<body>
<script>
// 开启定时器
let timerId = setTimeout(function () {
console.log('bang!');
}, 3000)
console.log(timerId);
// 清除定时器
clearTimeout(timerId)
</script>
</body>
</html>
location
location对象
代码语言：javascript
复制<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>薪资想过万，代码敲三遍</title>
</head>
<body>
<script>
// location对象，操作当前窗口的url地址
console.log(location.href);
// 跳转页面
location.href = "http://www.ruruzi.com"
</script>
</body>
</html>
location对象的方法
代码语言：javascript
复制<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>薪资想过万，代码敲三遍</title>
</head>
<body>
<button>刷新</button>
<button>强制刷新</button>
<script>
// 刷新页面
const btn1 = document.querySelector('button:nth-child(1)')
btn1.addEventListener('click', function () {
location.reload()
})
// 强制刷新页面
const btn2 = document.querySelector('button:nth-child(2)')
btn2.addEventListener('click', function () {
location.reload(true)
})
</script>
</body>
</html>
