单击复制
<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>Document</title>
<style>
.box,
.codeNumber {
width: 120px;
margin: 30px auto;
}
#addName {
width: 120px;
}
</style>
</head>
<body>
<div class="codeNumber">验证码是:
<span>123</span>
</div>
<div class="box">
<select name="addName" id="addName">
<option value='0'>语文</option>
</select>
</div>
<script>
var codeNumber = document.querySelector('.codeNumber>span');
codeNumber.onclick = function () {
//新建inp框
var input = document.createElement('input');
//inp的值等于要复制的内容
input.value = codeNumber.innerHTML;
//inp挂在到body中
document.body.appendChild(input);
//选中inp中的值
input.select();
//进行复制
document.execCommand('copy');
//复制完成,清除inp
input.remove();
alert("复制成功!!!!!")
}
</script>
</body>