javascript复制内容到剪贴板:

<style>
    #copy-link{
        position: relative;
        z-index: 2;
    }
    #copy-button{
        display: none;
        color: #000;
        position: absolute;
        left: 50%;
        transform: translateX(-50%);
        bottom: -42px;
        border: 1px solid #bcbcbc;
        z-index: 3;
    }
    .copy-box{
        box-sizing: border-box;
        width: 80px;
        height: 22px;
        line-height: 20px;
        margin: 5px 10px;
        font-weight: normal;
        border: 1px solid #1a8d8d;
        color: #1a8d8d;
    }
    .triangle {
        width: 0;
        height: 0;
        border-left: 10px solid transparent;
        border-right: 10px solid transparent;
        border-bottom: 10px solid #bcbcbc;
        position: absolute;
        top: -10px;
        left: 50%;
        transform: translateX(-50%);
    }
</style>

<script>
    document.addEventListener('DOMContentLoaded', function() {
        const copyLink = document.getElementById('copy-link');
        const copyButton = document.getElementById('copy-button');

        copyLink.addEventListener('mouseenter', () => {
            copyButton.style.display = 'block';
        });

        copyLink.addEventListener('mouseleave', () => {
            copyButton.style.display = 'none';
        });

        copyButton.addEventListener('click', function(event) {
            event.stopPropagation();
            event.preventDefault();

            const href = copyLink.getAttribute('href')
            if (navigator.clipboard && window.isSecureContext){
                navigator.clipboard.writeText(href)
            }else {
                const tempInput = document.createElement('input');
                tempInput.value = href;
                document.body.appendChild(tempInput);
                tempInput.select();

                try {
                    document.execCommand('copy');
                } catch (err) {
                    console.error('Unable to copy link to clipboard:', err);
                } finally {
                    document.body.removeChild(tempInput);
                }
            }
        });
    });
</script>