单击按钮使用jQuery复制到剪贴板

Z时代
2024-01-10
分类：问答

如何将div中的文本复制到剪贴板？我有一个div，需要添加一个链接，该链接会将文本添加到剪贴板。有解决方案吗？

<p class="content">Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s</p>
<a class="copy-text">copy Text</a>

单击复制文本后，然后按Ctrl+ V，必须将其粘贴。

回答：

自2016年起，您现在可以在大多数浏览器中将文本复制到剪贴板，因为大多数浏览器都可以通过编程方式将选择的文本复制到剪贴板document.execCommand("copy")，从而可以将所选内容关闭。

与浏览器中的某些其他操作（如打开新窗口）一样，只能通过特定的用户操作（如单击鼠标）将内容复制到剪贴板。例如，它不能通过计时器来完成。

这是一个代码示例：

document.getElementById("copyButton").addEventListener("click", function() {
    copyToClipboard(document.getElementById("copyTarget"));
});
function copyToClipboard(elem) {
      // create hidden text element, if it doesn't already exist
    var targetId = "_hiddenCopyText_";
    var isInput = elem.tagName === "INPUT" || elem.tagName === "TEXTAREA";
    var origSelectionStart, origSelectionEnd;
    if (isInput) {
        // can just use the original source element for the selection and copy
        target = elem;
        origSelectionStart = elem.selectionStart;
        origSelectionEnd = elem.selectionEnd;
    } else {
        // must use a temporary form element for the selection and copy
        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;
    }
    // select the content
    var currentFocus = document.activeElement;
    target.focus();
    target.setSelectionRange(0, target.value.length);
    // copy the selection
    var succeed;
    try {
          succeed = document.execCommand("copy");
    } catch(e) {
        succeed = false;
    }
    // restore original focus
    if (currentFocus && typeof currentFocus.focus === "function") {
        currentFocus.focus();
    }
    if (isInput) {
        // restore prior selection
        elem.setSelectionRange(origSelectionStart, origSelectionEnd);
    } else {
        // clear temporary content
        target.textContent = "";
    }
    return succeed;
}
input {
  width: 400px;
}
<input type="text" id="copyTarget" value="Text to Copy"> <button id="copyButton">Copy</button><br><br>
<input type="text" placeholder="Click here and press Ctrl-V to see clipboard contents">