js实现复制粘贴

function copyToClipboard(text) {
    const textarea = document.createElement('textarea');
    textarea.value = text;
    document.body.appendChild(textarea);
    textarea.select();
    try {
        const successful = document.execCommand('copy');
        const msg = successful ? 'successful' : 'unsuccessful';
        console.log('Copying text command was ' + msg);
    } catch (err) {
        console.log('Oops, unable to copy', err);
    }
    document.body.removeChild(textarea);
}

// 使用
copyToClipboard('要复制的文本');

async function copyToClipboard(text) {
    try {
        await navigator.clipboard.writeText(text);
        console.log('Text copied to clipboard');
    } catch (err) {
        console.error('Failed to copy text: ', err);
    }
}

// 使用
document.getElementById('copyButton').addEventListener('click', function() {
    copyToClipboard('要复制的文本');
});