jquery的show/hide可以
或者jquery中的toggleClass()方法
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>点击显示或隐藏图片</title>
<style>
.show{
display: block;
}
.hidden{
display: none;
}
</style>
</head>
<body>
<button>change</button>
<img class="show" src="https://static.cnblogs.com/images/adminlogo.gif" alt="博客园">
<script src="https://cdn.bootcss.com/jquery/3.3.1/jquery.min.js"></script>
<script>
//jquery 中直接切换className
// $('button').click(function(){
// $('img').toggleClass('hidden');
// })
//原生js
var btn = document.getElementsByTagName('button')[0];
var img = document.getElementsByTagName('img')[0];
btn.onclick = function(){
if(img.className == "show" ){
img.className = "hiden";
}else{
img.className='show';
}
}
</script>
</body>
</html>