JavaScript实现一键复制内容剪贴板-编程学习网

引言

有时候为了方便用户快速复制页面的内容，一般的做法就是添加一个按钮给用户点击一下就复制下来了，这边使用JavaScript原生的方法进行设置剪贴板。

代码

copy.html

<!DOCTYPE html>
<html>
<head>
    <title>一键复制demo</title>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width,initial-scale=1.0,maximum-scale=1.0,user-scalable=0,viewport-fit=cover">
    <style type="text/css">
        *{
            padding:0;
            margin:0;
        }
        h2{
            text-align: center;
            margin-top: 20px;
        }
        #neirong{
            width: calc(90% - 20px);
            padding:10px 10px;
            margin:20px auto;
            background: #eee;
            border-radius: 5px;
        }
        #copy{
            border:none;
            width: 90%;
            height: 45px;
            background: #39f;
            font-size: 16px;
            color: #fff;
            font-weight: bold;
            border-radius: 5px;
            margin: 0 auto;
            display: block;
        }
    </style>
</head>
<body>
<h2>一键复制demo</h2>
<div id="neirong">这是内容这是内容这是内容这是内容</div>
<button id="copy">复制</button>

<script>
function copyArticle(event){
      const range = document.createRange();
      range.selectNode(document.getElementById('neirong'));
      const selection = window.getSelection();
      if(selection.rangeCount > 0) selection.removeAllRanges();
      selection.addRange(range);
      document.execCommand('copy');
      alert("复制成功");
}

window.onload = function () {
  var obt = document.getElementById("copy");
  obt.addEventListener('click', copyArticle, false);
}
</script>
</body>
</html>