1、演示：
2、代码
<!DOCTYPE html>
<html lang="en"><head><meta charset="UTF-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><title>一键复制</title><style>.container {display: flex;justify-content: center;>button {background-color: #fff;border: 2px solid #ccc;height: 32px;border-radius: 5px;padding: 5px 15px;}>span {line-height: 32px;}}</style>
</head>
<body><div class="container"><span>如：</span><span id="text">生活如意，事业高升。</span><button id="btn" onclick="copy()">一键复制</button></div>
</body>
<script>function openMessage(value) {const msg = document.createElement('div');msg.style.height = '35px';msg.style.lineHeight = '35px';msg.style.padding = '5px 10px';msg.style.position = 'fixed';msg.style.top = '50%';msg.style.left = '50%';msg.style.transform = 'translate(-50%, -50%)';msg.style.backgroundColor = 'rgba(0, 0, 0, .3)';msg.style.textAlign = 'center';msg.style.color = 'white';msg.style.borderRadius = '15px';msg.textContent = value;document.body.appendChild(msg);setInterval(() => {document.body.removeChild(msg);}, 5000);}function copy() {const text = document.getElementById('text')const textarea = document.createElement('textarea');textarea.readOnly = 'readonly';textarea.style.position = 'absolute';textarea.style.left = '-9999px';textarea.value = text.innerText;document.body.appendChild(textarea);textarea.select();const result = document.execCommand('Copy');if (result) {// console.log('复制成功');openMessage('复制成功')} else {openMessage('操作失败')}document.body.removeChild(textarea);}
</script></html>
