Question

这方面有不少帖子，但在花了几个小时试图调整已经存在的解决方案之后，我很清楚这有点复杂了。

我正在尝试创建“复制到剪贴板”功能，以便我们的用户只需单击即可复制其序列号（我设法通过2种不同的解决方案实现此功能），但这是一个重大问题。

由于使用短代码动态生成序列号，我无法将其放在HTML“text”/“value”字段中，如下所示：

<input id="serial" value="[shortcode here]">

因为这会破坏短代码，所以它必须放在它自己的div中，我这样做了：

<div id="serial">[shortcode here]</div>

这会在页面上输出直接父ID为'serial'的短代码，因此我正在使用的JS应该从元素ID中选择文本 - #serial 。

不幸的是它没有......

我试图改变这种方法也没有运气：

从自己动手部分：https://www.sitepoint.com/javascript-copy-to-clipboard/

这个是使用纯文本而不是短代码或自定义div。

有人能为我提供一个工作剪贴板解决方案，如上例所示，不会破坏短代码吗？

Answer 1

document.getElementById("copyButton").addEventListener("click", function() {
    copyToClipboardMsg(document.getElementById("copyTarget"), "msg");
});

document.getElementById("copyButton2").addEventListener("click", function() {
    copyToClipboardMsg(document.getElementById("copyTarget2"), "msg");
});

document.getElementById("pasteTarget").addEventListener("mousedown", function() {
    this.value = "";
});


function copyToClipboardMsg(elem, msgElem) {
	  var succeed = copyToClipboard(elem);
    var msg;
    if (!succeed) {
        msg = "Copy not supported or blocked.  Press Ctrl+c to copy."
    } else {
        msg = "Text copied to the clipboard."
    }
    if (typeof msgElem === "string") {
        msgElem = document.getElementById(msgElem);
    }
    msgElem.innerHTML = msg;
    setTimeout(function() {
        msgElem.innerHTML = "";
    }, 2000);
}

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 id="copyTarget" value="Some initial text"> <button id="copyButton">Copy</button><br><br>
<span id="copyTarget2">Some Other Text</span> <button id="copyButton2">Copy</button><br><br>
<input id="pasteTarget"> Click in this Field and hit Ctrl+V to see what is on clipboard<br><br>
<span id="msg"></span><br>

请您尝试上面的片段吗？

Answer 2

Second @ pruvik7373回答

我认为[短代码]可能包含一些可以转换为其他内容的代码，因此不会使用textContent使用innerHTML，而是确保按原样复制所有内容。

＆＃13;

document.getElementById("copyButton").addEventListener("click", function() {
    copyToClipboardMsg(document.getElementById("copyTarget"), "msg");
});

document.getElementById("copyButton2").addEventListener("click", function() {
    copyToClipboardMsg(document.getElementById("serial"), "msg");
});

document.getElementById("pasteTarget").addEventListener("mousedown", function() {
    this.value = "";
});


function copyToClipboardMsg(elem, msgElem) {
	  var succeed = copyToClipboard(elem);
    var msg;
    if (!succeed) {
        msg = "Copy not supported or blocked.  Press Ctrl+c to copy."
    } else {
        msg = "Text copied to the clipboard."
    }
    if (typeof msgElem === "string") {
        msgElem = document.getElementById(msgElem);
    }
    msgElem.innerHTML = msg;
    setTimeout(function() {
        msgElem.innerHTML = "";
    }, 2000);
}

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.innerHTML;
    }
    // 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;
}

＆＃13;

<input id="copyTarget" value="Some initial text"> <button id="copyButton">Copy</button><br><br>
<div id="serial"><div>[pw_map address="New York City"</div> enablescrollwheel="false" key="YOUR API KEY"]</div> <button id="copyButton2">Copy</button><br><br>
<input id="pasteTarget"> Click in this Field and hit Ctrl+V to see what is on clipboard<br><br>
<span id="msg"></span><br>

＆＃13;

Answer 3

下面的代码为我做了诀窍。

注意：以下代码段可能无效，因为window对象无法访问。

＆＃13;

$(function() {
  $('#serial').click(function() {
    window.clipboardData.setData('text', $(this).text());
  });
});

＆＃13;

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div id="serial">[shortcode here]</div>

＆＃13;

Answer 4

你可以这样做：

 <div id="serial">[shortcode here]</div>
 <input id="some_other_id" type="text" />

和javascript代码：

             //first get text from your div and put it inside input field
             //then apply code to copy that text from input field
             $(document).ready(function(){
                 var text = $("#serial").text();
                 $("#some_other_id").val(text);
                   //your code for copying text from input field goes here
             });

使用javascript / jQuery复制div文本内容

4 个答案: