js复制指定的文本

async function copyToClipboard(text) {
    try {
        await navigator.clipboard.writeText(text);
        console.log('文本已成功复制到剪贴板');
    } catch (err) {
        console.error('复制失败:', err);
    }
}

// 使用示例
const textToCopy = "这是要复制的文本";
copyToClipboard(textToCopy);

function fallbackCopyTextToClipboard(text) {
    const textArea = document.createElement("textarea");
    textArea.value = text;
    
    // 避免页面滚动
    textArea.style.position = 'fixed';
    textArea.style.top = '-1000px';
    textArea.style.left = '-1000px';
    
    document.body.appendChild(textArea);
    textArea.focus();
    textArea.select();

    try {
        const successful = document.execCommand('copy');
        const msg = successful ? '成功复制' : '复制失败';
        console.log(msg);
    } catch (err) {
        console.error('复制失败:', err);
    }

    document.body.removeChild(textArea);
}

// 使用示例
const textToCopy = "这是要复制的文本";
fallbackCopyTextToClipboard(textToCopy);

<script src="https://cdnjs.cloudflare.com/ajax/libs/clipboard.js/2.0.11/clipboard.min.js"></script>

<button class="copy-btn" data-clipboard-text="这是要复制的文本">复制</button>

const clipboard = new ClipboardJS('.copy-btn');

clipboard.on('success', function(e) {
    console.log('文本已成功复制到剪贴板');
    e.clearSelection();
});

clipboard.on('error', function(e) {
    console.error('复制失败:', e);
});