<!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>显示和隐藏图片</title>
</head>
<body>
<div>
<img src="tao.png" >
<button class="close-btn">点我</button>
</div>
<script>
//获取元素
var img = document.querySelector(‘img‘);
var btn = document.querySelector(‘.close-btn‘);
var flag = 0;
//注册事件 程序处理
btn.onclick = function(){
if(flag == 0){
img.style.display = "none";
flag = 1;
}else{
img.style.display = "block";
flag = 0;
}
}
</script>
</body>
</html>
原文：https://www.cnblogs.com/wuyuchuan/p/14770868.html