本地存储之localStorage
作者：互联网
1.生命周期永久生效，除非手动删除 否则关闭页面也会存在
2.可以多个窗口（页面）共享（同一浏览器可以共享）
3.以键位对的形式存储使用
存储数据：
localStorage.setItem()
获取数据：
localStorage.getItem()
删除数据：
localStorage.removeItem
删除所有数据：
localStorage.clear()
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Document</title>
</head>
<body>
<input type="text">
<button class="set">存储数据</button>
<button class="get">获取数据</button>
<button class="remove">删除数据</button>
<button class="del">清空所有数据</button>
<script>
var ipt = document.querySelector('input');
var set = document.querySelector('.set');
var get = document.querySelector('.get');
var remove = document.querySelector('.remove');
var del = document.querySelector('.del');
set.addEventListener('click', function() {
var val = ipt.value;
localStorage.setItem('username', val);
})
get.addEventListener('click', function() {
console.log(localStorage.getItem('username'));
})
remove.addEventListener('click', function() {
localStorage.removeItem('username');
})
del.addEventListener('click', function() {
localStorage.clear();
})
</script>
</body>
</html>
标签：function,存储,本地,localStorage,querySelector,var,document,click 来源： https://www.cnblogs.com/0722tian/p/16185143.html