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storage.html
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<!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>web storage</title>
<style>
.bt1{
width:200px;
height:80px;
font-size: 50px;
}
.div1{
height: 200px;
background-color:rgba(47, 189, 255, 0.541);
color:white;
font-size:50px;
text-align: center;
font-weight: 700;
line-height: 200px;
}
.div2{
text-align: center;
margin: 20px;
}
.text{
margin: 20px;
width:600px;
height: 50px;
font-size: 50px
}
</style>
</head>
<body>
<div id="ws1" class="div1"></div>
<div class="div2">
<view style="font-size:30px; font-weight: 700;">k e y:</view> <input class="text" id="text1"><br>
<view style="font-size:30px; font-weight: 700;">value:</view><input class="text" id="text2"><br>
<button class="bt1" onclick="bt1()">保存</button>
<button class="bt1" onclick="bt2()">取出</button>
<button class="bt1" onclick="bt3()">删除</button>
</div>
<div id="ws2" style="display:none;" class="div1">
</div>
<script>
function save(key,value){
localStorage[key]=value;
if(localStorage[key] === value){
document.getElementById("ws2").style.display="block";
document.getElementById("ws2").innerHTML="保存成功"
document.getElementById("text1").value="";
document.getElementById("text2").value="";
setTimeout(function(){
document.getElementById("ws2").style.display="none";
},
2000);
}else{
document.getElementById("ws1").innerHTML="保存失败";
}
}
function get(key){
document.getElementById("ws1").innerHTML=key+"：" + localStorage[key];
}
function del(key){
localStorage.removeItem(key)
document.getElementById("ws1").innerHTML=key+"：" + localStorage[key];
}
function bt1(){
var key = document.getElementById("text1").value;
var value = document.getElementById("text2").value;
save(key,value);
}
function bt2(){
var key = document.getElementById("text1").value;
get(key);
}
function bt3(){
del(document.getElementById("text1").value);
}
</script>
</body>
</html>