点击按钮无法给div元素传入空值
<!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></title>
<link rel="stylesheet" href="04.css">
<style type="text/css">
.test{
width:100px;
height:100px;
background:red;
text-align:center;
line-height:100px;
margin:0 auto;
}
.hh{
margin:10px auto;
display:block;
}
</style>
</head>
<body>
<div class="test">word</div>
<button class="hh">点击删除Text</button>
<script type="text/javascript" rel="script">
var a = document.getElementsByClassName("test");
var b = document.getElementsByClassName("hh");
b.onclick=function(){
a.innerHTML="";
};
</script>
</body>
</html>
