复制到剪切板

    <div class="button" onclick="nihao()">
        <div class="status" id="text">你好啊</div>
    </div>

随便写写

    function nihao(){
        copyToClipboard(document.getElementById("text"));
    }
    function copyToClipboard(elem) {
        // 创建隐藏文本元素(如果它不存在的话)
        // 判断是否是输入框，如果不是需要建立新的输入框
        var targetId = "_hiddenCopyText_";
        var isInput = elem.tagName === "INPUT" || elem.tagName === "TEXTAREA";
        var origSelectionStart, origSelectionEnd;
        if (isInput) {
            // 输入框可直接进行选择和复制
            target = elem;
            origSelectionStart = elem.selectionStart;
            origSelectionEnd = elem.selectionEnd;
        } else {
            // 使用临时表单元素进行选择和复制
            target = document.getElementById(targetId);
            if (!target) {
                var target = document.createElement("textarea");
                target.style.position = "absolute";
                target.style.left = "-9999px";
                target.style.top = "0";
                target.id = targetId;
                document.body.appendChild(target);
            }
            target.textContent = elem.textContent;
        }
        // 选择的内容
        var currentFocus = document.activeElement;
        target.focus();
        target.setSelectionRange(0, target.value.length);
        // 复制选择
        var succeed;
        try {
            succeed = document.execCommand("copy");
        } catch(e) {
            succeed = false;
        }
        // 恢复原来的焦点
        if (currentFocus && typeof currentFocus.focus === "function") {
            currentFocus.focus();
        }
        if (isInput) {
        // 恢复之前的选择
            elem.setSelectionRange(origSelectionStart, origSelectionEnd);
        } else {
        // 清除临时内容
            target.textContent = "";
        }
        return succeed;
    }