<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title></title>
<style type="text/css">
#app{
display: inline-block;
border: 1px solid lightblue;
border-radius: 10px;
padding: 10px;
}
img{
vertical-align: middle;
}
</style>
</head>
<body>
<span id="app">
<img id="img" src="./img/liked.png" alt="">
<span id="info">点赞</span>
</span>
<script>
var outer = document.getElementById("app");
var img = document.getElementById("img");
var span = document.getElementById("info");
var like = localStorage.getItem("like")=="true"?true:false; //false
img.src= like?"./img/liked.png":"./img/like.png";
span.innerText= like?"取消":"点赞";
outer.οnclick=function(){
like=!like;
localStorage.setItem("like", like);
img.src= like?"./img/liked.png":"./img/like.png";
span.innerText= like?"取消":"点赞";
}
</script>
</body>
</html>
