使用 localStorage 创建一个本地存储的 name/value 对,name=“lastname” value=“Smith”, 然后检索 “lastname” 的值,并插入到 id=“result” 的元素上:
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>菜鸟教程(runoob.com)</title>
<script>
function clickCounter() {if(typeof(Storage) !== "undefined") {if (localStorage.clickcount) {localStorage.clickcount = Number(localStorage.clickcount)+1;} else {localStorage.clickcount = 1;}document.getElementById("result").innerHTML = "你在按钮上已经点击了 " + localStorage.clickcount + " 次。";if(localStorage.clickcount >= 15){localStorage.removeItem("clickcount");}} else {document.getElementById("result").innerHTML = "Sorry, your browser does not support web storage...";}
}
</script>
</head>
<body>
<p><button onclick="clickCounter()" type="button">点我!</button></p>
<div id="result"></div>
<p>点击按钮查看数字会自动增加。</p>
<p>关闭浏览器,重新打开这个页面点击按钮,可以看到之前的数据是有保留的。</p>
</body>
</html>
语法
window.localStorage
保存数据语法:
localStorage.setItem("key", "value");
读取数据语法:
var lastname = localStorage.getItem("key");
删除数据语法:
localStorage.removeItem("key");