如何将div内的文本复制到剪贴板?我有一个div,需要添加一个链接,将文本添加到剪贴板。有解决办法吗?

<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>

在我点击复制文本,然后我按Ctrl + V,它必须被粘贴。


当前回答

剪贴板-填充库是现代基于promise的异步剪贴板API的填充库。

在CLI下安装:

npm install clipboard-polyfill 

导入为JS文件中的剪贴板

window.clipboard = require('clipboard-polyfill');

例子

我在一个bundle中使用require("babel-polyfill");并在chrome 67上进行了测试。所有这些都有利于生产。

其他回答

2022年6月

更新:现在正确的方法是使用剪贴板API。

例如:

// get the text from the DOM Element: 
const textToCopy = document.querySelector('.content').innerText

// when someone clicks on the <a class="copy-text"> element 
// (which should be a <button>), execute the copy command:
document.querySelector('.copy-text').addEventListener('click' , ()=> {
  navigator.clipboard.writeText(textToCopy).then(
    function() {
      /* clipboard successfully set */
      window.alert('Success! The text was copied to your clipboard') 
    }, 
    function() {
      /* clipboard write failed */
      window.alert('Opps! Your browser does not support the Clipboard API')
    }
  )
})

就是这样。

如果你想看看在Clipboard API引入之前的解决方案(现在不是一个好的实践):

$('button.copyButton').click(function(){
    $(this).siblings('input.linkToCopy').select();      
    document.execCommand("copy");
});

HTML:

<button class="copyButton">click here to copy</button>
<input class="linkToCopy" value="TEXT TO COPY"
style="position: absolute; z-index: -999; opacity: 0;" />

大多数建议的答案都会创建一个额外的临时隐藏输入元素。因为现在大多数浏览器都支持div内容编辑,所以我提出了一个解决方案,它不创建隐藏元素,保留文本格式,并使用纯JavaScript或jQuery库。

下面是一个使用我能想到的最少代码行的极简框架实现:

//Pure javascript implementation: document.getElementById("copyUsingPureJS").addEventListener("click", function() { copyUsingPureJS(document.getElementById("copyTarget")); alert("Text Copied to Clipboard Using Pure Javascript"); }); function copyUsingPureJS(element_id) { element_id.setAttribute("contentEditable", true); element_id.setAttribute("onfocus", "document.execCommand('selectAll',false,null)"); element_id.focus(); document.execCommand("copy"); element_id.removeAttribute("contentEditable"); } //Jquery: $(document).ready(function() { $("#copyUsingJquery").click(function() { copyUsingJquery("#copyTarget"); }); function copyUsingJquery(element_id) { $(element_id).attr("contenteditable", true) .select() .on("focus", function() { document.execCommand('selectAll', false, null) }) .focus() document.execCommand("Copy"); $(element_id).removeAttr("contenteditable"); alert("Text Copied to Clipboard Using jQuery"); } }); #copyTarget { width: 400px; height: 400px; border: 1px groove gray; color: navy; text-align: center; box-shadow: 0 4px 8px 0 gray; } #copyTarget h1 { color: blue; } #copyTarget h2 { color: red; } #copyTarget h3 { color: green; } #copyTarget h4 { color: cyan; } #copyTarget h5 { color: brown; } #copyTarget h6 { color: teal; } #pasteTarget { width: 400px; height: 400px; border: 1px inset skyblue; } <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script> <div id="copyTarget"> <h1>Heading 1</h1> <h2>Heading 2</h2> <h3>Heading 3</h3> <h4>Heading 4</h4> <h5>Heading 5</h5> <h6>Heading 6</h6> <strong>Preserve <em>formatting</em></strong> <br/> </div> <button id="copyUsingPureJS">Copy Using Pure JavaScript</button> <button id="copyUsingJquery">Copy Using jQuery</button> <br><br> Paste Here to See Result <div id="pasteTarget" contenteditable="true"></div>

非常简单。你必须搜索js navigator.clipboard.writeText("thistext"); 这将简单地复制文本“thistext”。现在让它工作点击,使用jquery onclick函数和存储值(你想复制的文本)在一个字符串(如果你需要,那么你可以使用DOM以及从页面获取一个值),并使用这一行复制,而不是“thistext”,传递变量!

我刚才正在做,我只是想知道有没有比我更好的方法,但是没有。

你可以使用我的代码,它复制文本并显示一个工具提示。

Head

<link href="https://cdn.jsdelivr.net/npm/bootstrap@5.0.2/dist/css/bootstrap.min.css" rel="stylesheet" integrity="sha384-EVSTQN3/azprG1Anm3QDgpJLIm9Nao0Yz1ztcQTwFspd3yD65VohhpuuCOmLASjC" crossorigin="anonymous">
<link href="https://cdn.jsdelivr.net/npm/remixicon@2.2.0/fonts/remixicon.css" rel="stylesheet">
<script src="https://cdn.jsdelivr.net/npm/bootstrap@5.0.2/dist/js/bootstrap.bundle.min.js" integrity="sha384-MrcW6ZMFYlzcLA8Nl+NtUVF0sA7MsXsP1UyJoMp4YLEuNSfAP+JcXn/tWtIaxVXM" crossorigin="anonymous"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.6.0/jquery.min.js" integrity="sha512-894YE6QWD5I59HgZOGReFYm4dnWc1Qt5NtvYSaNcOP+u1T9qYdvdihz0PPSiiqn/+/3e7Jo4EaG7TubfWGUrMQ==" crossorigin="anonymous" referrerpolicy="no-referrer"></script>

Body

<div class="alert alert-primary alert-dismissible mb-0 py-1" role="alert" id="liveAlert">
    <div class="container d-flex justify-content-between">
      <button type="button" class=" btn align-self-center ms-4 copytext" data-bs-toggle="tooltip" data-bs-placement="top" title=""><strong>Good news!</strong>  You just got 10% off, use your coupon <span class="fw-bold bg-secondary text-white px-2 maintext">store10off</span>. <i class="ri-file-copy-line"></i></button>
      <button type="button" class="btn align-self-center" data-bs-dismiss="alert" aria-label="Close"><strong class="fw-bold fs-4"><i class="ri-close-fill"></i></strong></button>
    </div>
    </div>

函数

<script>
    $('.copytext').click(function(){
        var thistooltip = $(this);
        var thistext = $(this).children('.maintext').text();
        navigator.clipboard.writeText(thistext);
        $(this).attr('title','copied');
        setTimeout(function(){$(thistooltip).tooltip("toggle");}, 800);
    });
</script>

这里是HTML代码

    <input id="result" style="width:300px"/>some example text
    <button onclick="copyToClipboard('result')">Copy P1</button>
    <input type="text" style="width:400px" placeholder="Paste here for test" />

JS代码:

     function copyToClipboard(elementId) {

                      // Create a "hidden" input
                      var aux = document.createElement("input");

                      aux.setAttribute("value", document.getElementById(elementId).value);
                      // Append it to the body
                      document.body.appendChild(aux);
                      // Highlight its content
                      aux.select();
                      // Copy the highlighted text
                      document.execCommand("copy");
                      // Remove it from the body
                      document.body.removeChild(aux);
                    }