JSFiddle - React, Tailwind, and code Playground

by 규연 황

HTML

<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>

JavaScript

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);
    
    //...