此代码依赖jquery与clipboard，使用前记得引用
源码如下
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<script src="./clipboard.min.js"></script>
<script src="./jquery.js"></script>
</head>
<body>
<div id="target">123456</div>
<button class="btn" data-clipboard-action="copy" data-clipboard-target="#target">点击复制</button>
<a href="javascript:testApp('weixin://')" class="dl-btn" id="download">打开微信</a>
<script>
var clipboard = new ClipboardJS('.btn');
clipboard.on('success', function(e) {
location.href="weixin://";
console.log(e);
});
clipboard.on('error', function(e) {
console.log(e);
});
function testApp(url) {
location.href="url";
}
</script>
</body>
</html>