js+html5点击赋值到剪贴板
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
</head>
<body>
<span id="a_1">复制成功</span>
<button onclick="copyUrl(1)">复制</button>
<script>
function copyUrl(id) {const range = document.createRange();//创建range对象
range.selectNode(document.getElementById('a_'+id));
const selection = window.getSelection();//选择的文本范围
selection.addRange(range);//向选区（Selection）中添加一个区域（Range）
document.execCommand('Copy');//将当前选中区复制到剪贴板
console.log("复制成功！");
}
</script>
</body>
</html>