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JavaScript – HTML Editor

Author: admin - Posted: 28/12/20 - Update: 28/12/20

Bản full: https://editor.duycode.com/

2. Bản 2.0

<!DOCTYPE html>
<!-- saved from url=(0031)http://htmledit.squarefree.com/ -->
<html>

<head>
  <meta http-equiv="Content-Type" content="text/html; charset=windows-1258">
  <title>Real-time HTML Editor</title>
  <script type="text/javascript">
    var editboxHTML = '<html class="expand close">'
      + '<head>'
      + '<style type="text/css">'
      + '.expand { width: 100%; height: 100%; }'
      + '.close { border: none; margin: 0px; padding: 0px; }'
      + 'html,body { overflow: hidden; }'
      + '<\/style>'
      + '<\/head>'
      + '<body class="expand close" onload="document.f.ta.focus(); document.f.ta.select();">'
      + '<form class="expand close" name="f">'
      + '<textarea class="expand close" style="background: #def;" name="ta" wrap="hard" spellcheck="false">'
      + '<\/textarea>'
      + '<\/form>'
      + '<\/body>'
      + '<\/html>';
    var old = '';

    function init() {
      window.editbox.document.write(editboxHTML);
      window.editbox.document.close();
      update();
    }

    function update() {
      var textarea = window.editbox.document.f.ta;
      var d = dynamicframe.document;
      if (old != textarea.value) {
        old = textarea.value;
        d.open();
        d.write(old);
        d.close();
      }
      window.setTimeout(update, 150);
    }
  </script>
</head>
<frameset resizable="yes" cols="50%,*" onload="init();">
  <frame name="editbox" src="javascript:&#39;&#39;;"></frame>
  <frame name="dynamicframe" src="javascript:&#39;&#39;;"></frame>
</frameset>

</html>

<!DOCTYPE html>

<html>

<head>

<title>Real-time HTML Editor</title>

var editboxHTML = '<html class="expand close">'

+ '<head>'

+ '<style type="text/css">'

+ '.expand { width: 100%; height: 100%; }'

+ '.close { border: none; margin: 0px; padding: 0px; }'

+ 'html,body { overflow: hidden; }'

+ '<\/style>'

+ '<\/head>'

+ '<body class="expand close" onload="document.f.ta.focus(); document.f.ta.select();">'

+ '<form class="expand close" name="f">'

+ '<textarea class="expand close" style="background: #def;" name="ta" wrap="hard" spellcheck="false">'

+ '<\/textarea>'

+ '<\/form>'

+ '<\/body>'

+ '<\/html>';

var old = '';

function init() {

window.editbox.document.write(editboxHTML);

window.editbox.document.close();

update();

}

function update() {

var textarea = window.editbox.document.f.ta;

var d = dynamicframe.document;

if (old != textarea.value) {

old = textarea.value;

d.open();

d.write(old);

d.close();

}

window.setTimeout(update, 150);

}

</script>

</head>

</frameset>

</html>

3. Bản 3.0

<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <title>HTML Editor</title>
    <style>
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
            font-size: 14px;
        }

        body {
            position: fixed;
            top: 0;
            bottom: 0;
            left: 0;
            right: 0;
            padding: 5px;
        }

        main {
            display: flex;
            flex-direction: row;
            height: 100%;
            font-family: Consolas, 'ConsolasRegular', 'Courier New', monospace !important;
        }

        #preview {
            flex-grow: 1;
        }

        iframe {
            width: 100%;
            height: 98%;
        }

        #editBox {
            display: flex;
            flex-direction: column;
            flex-wrap: nowrap;
            min-width: 300px;
            height: 98%;
            width: 50%;
            border: 1px solid #6c757d;
            margin-right: 2px;
            resize: horizontal;
            overflow: auto;
        }

        div.itemArea {
            background-color: #ddd;
            flex-grow: 0;
        }

        div.itemArea.active {
            flex-grow: 1;
        }

        #editBox.rotate {
            width: 100%;
            flex-wrap: wrap;
        }

        #editBox.rotate>#HTMLArea {
            height: 100%;
            flex-grow: 0;
        }

        #editBox.rotate>.itemArea {
            width: 50%;
        }

        textarea {
            overflow: auto;
            border: 0;
            padding: 0.5rem;
            display: none;
            width: 100%;
            height: calc(100% - 3rem) !important;
            border: 1px solid #6c757d;
        }

        .itemArea.active>textarea {
            display: block;
        }


        .btnNav {
            cursor: pointer;
            float: left;
            padding: 0.5rem 0.75rem;
            margin: 2px;
            border: 1px solid #6c757d;
            border-radius: 0.25rem 0.25rem 0 0;
            background-color: white;
        }

        .itemArea .btnNav:hover {
            background-color: #374958 !important;
            color: white;
        }

        .itemArea.active .btnNav:first-child {
            background-color: #6c757d;
            color: white;
        }

        #btnRotate,
        #btnNewWindow {
            float: right;
        }

        #btnFormat::before {
            content: "Demo ";
        }

        #btnFormat.addCode::before {
            content: "Clear ";
        }
    </style>
</head>

<body>
    <main>
        <div id="editBox">
            <div id="HTMLArea" class="itemArea active">
                <div class="itemNav">
                    <div id="HTMLNav" class="btnNav">index.html</div>
                    <div id="btnFormat" class="btnNav">Code</div>
                    <div id="btnNewWindow" class="btnNav">Open Popup </div>
                    <div id="btnRotate" class="btnNav">Rotate</div>
                </div>
                <textarea id="HTMLEditor" placeholder="Code HTML..."></textarea>
            </div>
            <div id="CSSArea" class="itemArea">
                <div class="itemNav">
                    <div id="CSSNav" class="btnNav">style.css</div>
                </div>
                <textarea id="CSSEditor" placeholder="Code CSS..."></textarea>
            </div>
            <div id="JSArea" class="itemArea">
                <div class="itemNav">
                    <div id="JSNav" class="btnNav">funtion.js</div>
                </div>
                <textarea id="JSEditor" placeholder="Code JS..."></textarea>
            </div>
        </div>
        <div id="preview">
            <iframe></iframe>
        </div>
    </main>

    <script>
        let HTMLEditor = document.getElementById("HTMLEditor");
        let CSSEditor = document.getElementById("CSSEditor");
        let JSEditor = document.getElementById("JSEditor");
        let editBox = document.getElementById("editBox");

        let btnNewWindow = document.getElementById("btnNewWindow");
        let btnFormat = document.getElementById("btnFormat");

        let preview = document.getElementById("preview");
        let itemArea = document.getElementsByClassName("itemArea");

        let windowPopup = null;

        let openPopup = () => {
            windowPopup = window.open("", "", "width=1000,height=700");
            let cssNode = document.createElement("style");
            let jsNode = document.createElement("script");
            cssNode.innerHTML = "body{width:100%;height:100%;margin:0;padding:0}iframe{width:100%;height:100%;border:0}";
            jsNode.innerHTML = "window.onbeforeunload=(e)=>{window.opener.messageFromChildWindow(\"closed\")}";
            windowPopup.document.head.append(cssNode);
            windowPopup.document.head.append(jsNode);
   
            preview.style.display = "none";
            btnNewWindow.classList.add("closePopup");
            btnNewWindow.innerText = "Close Popup";
        }
        let closePopup = () => {
            windowPopup = null;
            preview.style.display = "block";
            btnNewWindow.classList.remove("closePopup");
            btnNewWindow.innerText = "Open Popup ";
        }

        messageFromChildWindow = (msg) => {
            if (msg === 'closed') {
                closePopup();
                reloadPreview();
            }
        }

        btnNewWindow.onclick = () => {
            if (btnNewWindow.classList.contains("closePopup")) {
                windowPopup.close();
                closePopup();
            }
            else {
                openPopup();
            }
            reloadPreview();
        }

        window.onbeforeunload = function () {
            windowPopup.close();
        };

        btnFormat.onclick = () => {
            if (!btnFormat.classList.contains("addCode")) {
                for (i = 0; i < itemArea.length; i++) {
                    if (!itemArea[i].classList.contains("active")) {
                        itemArea[i].classList.add("active");
                    }
                }

                HTMLEditor.value = "<!DOCTYPE html>\n"
                    + "<html lang=\"en\"> \n"
                    + "<head>\n"
                    + "    <meta charset=\"UTF-8\">\n"
                    + "    <meta name=\"description\" content=\"The HTML5 Herald\">\n"
                    + "    <meta name=\"author\" content=\"Developer\">\n"
                    + "    <meta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\">\n"
                    + "    <title>Document<\/title>\n"
                    + "    <link rel=\"stylesheet\" href=\"\">\n"
                    + "<\/head>\n"
                    + "<body>\n"
                    + "    <h2 id=\"demo\">Click me, please !!!<\/h2>\n"
                    + "    <script src=\"\"><\/script>\n"
                    + "<\/body>\n"
                    + "<\/html>";
                CSSEditor.value = "h2 { \n"
                    + "    font-style: italic;\n"
                    + "    color: red;\n"
                    + "}";
                JSEditor.value = "let demoID = document.getElementById(\"demo\");\n"
                    + "    demoID.onclick = () => {\n"
                    + "    demoID.innerHTML = \"You click at: \" + new Date().toLocaleTimeString()\n"
                    + "        + \" - \" + new Date().getMilliseconds();\n"
                    + "}";
            }
            else {
                HTMLEditor.value = "";
                CSSEditor.value = "";
                JSEditor.value = "";
            }
            btnFormat.classList.toggle("addCode");
            reloadPreview();
        }

        document.getElementById("btnRotate").onclick = () => {
            editBox.classList.toggle("rotate");
        }

        document.body.onclick = () => {
            let thisID = event.target.id;
            let navID = String(thisID.match(/HTMLNav|CSSNav|JSNav/i));

            if (navID != null) {
                let areaID = navID.replace("Nav", "Area");
                let areaNode = document.getElementById(areaID);
                areaNode.classList.toggle("active");
            }
        };


        let writeWindow = (w) => {
            w.document.open();
            w.document.write(HTMLEditor.value);
            let css = document.createElement("style");
            let js = document.createElement("script");
            css.innerHTML = CSSEditor.value;
            js.innerHTML = JSEditor.value;
            w.document.head.append(css);
            w.document.body.append(js);
            w.document.close();
        }

        let reloadPreview = () => {
            let bodyFrame = null;
            if (windowPopup != null) {
                bodyFrame = windowPopup.document.body;
            }
            else {
                bodyFrame = preview;
            }
            bodyFrame.innerHTML = "";
            let iframeNode = document.createElement("iframe");
            bodyFrame.appendChild(iframeNode);
            let myFrame = bodyFrame.getElementsByTagName("iframe")[0];
            writeWindow(myFrame.contentWindow);
        }

        document.onkeyup = () => {
            reloadPreview();
        };

    </script>
</body>

</html>

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<!DOCTYPE html>

<head>

<title>HTML Editor</title>

<style>

* {

box-sizing: border-box;

margin: 0;

padding: 0;

font-size: 14px;

}

body {

position: fixed;

top: 0;

bottom: 0;

left: 0;

right: 0;

padding: 5px;

}

main {

display: flex;

flex-direction: row;

height: 100%;

font-family: Consolas, 'ConsolasRegular', 'Courier New', monospace !important;

}

#preview {

flex-grow: 1;

}

iframe {

width: 100%;

height: 98%;

}

#editBox {

display: flex;

flex-direction: column;

flex-wrap: nowrap;

min-width: 300px;

height: 98%;

width: 50%;

border: 1px solid #6c757d;

margin-right: 2px;

resize: horizontal;

overflow: auto;

}

div.itemArea {

background-color: #ddd;

flex-grow: 0;

}

div.itemArea.active {

flex-grow: 1;

}

#editBox.rotate {

width: 100%;

flex-wrap: wrap;

}

#editBox.rotate>#HTMLArea {

height: 100%;

flex-grow: 0;

}

#editBox.rotate>.itemArea {

width: 50%;

}

textarea {

overflow: auto;

border: 0;

padding: 0.5rem;

display: none;

width: 100%;

height: calc(100% - 3rem) !important;

border: 1px solid #6c757d;

}

.itemArea.active>textarea {

display: block;

}

.btnNav {

cursor: pointer;

float: left;

padding: 0.5rem 0.75rem;

margin: 2px;

border: 1px solid #6c757d;

border-radius: 0.25rem 0.25rem 0 0;

background-color: white;

}

.itemArea .btnNav:hover {

background-color: #374958 !important;

color: white;

}

.itemArea.active .btnNav:first-child {

background-color: #6c757d;

color: white;

}

#btnRotate,

#btnNewWindow {

float: right;

}

#btnFormat::before {

content: "Demo ";

}

#btnFormat.addCode::before {

content: "Clear ";

}

</style>

</head>

<body>

<main>

<div id="HTMLNav" class="btnNav">index.html</div>

<div id="btnNewWindow" class="btnNav">Open Popup </div>

<div id="btnRotate" class="btnNav">Rotate</div>

</div>

</div>

<div id="CSSNav" class="btnNav">style.css</div>

</div>

</div>

<div id="JSNav" class="btnNav">funtion.js</div>

</div>

</div>

</div>

</main>

let HTMLEditor = document.getElementById("HTMLEditor");

let CSSEditor = document.getElementById("CSSEditor");

let JSEditor = document.getElementById("JSEditor");

let editBox = document.getElementById("editBox");

let btnNewWindow = document.getElementById("btnNewWindow");

let btnFormat = document.getElementById("btnFormat");

let preview = document.getElementById("preview");

let itemArea = document.getElementsByClassName("itemArea");

let windowPopup = null;

let openPopup = () => {

windowPopup = window.open("", "", "width=1000,height=700");

let cssNode = document.createElement("style");

let jsNode = document.createElement("script");

cssNode.innerHTML = "body{width:100%;height:100%;margin:0;padding:0}iframe{width:100%;height:100%;border:0}";

jsNode.innerHTML = "window.onbeforeunload=(e)=>{window.opener.messageFromChildWindow(\"closed\")}";

windowPopup.document.head.append(cssNode);

windowPopup.document.head.append(jsNode);

preview.style.display = "none";

btnNewWindow.classList.add("closePopup");

btnNewWindow.innerText = "Close Popup";

}

let closePopup = () => {

windowPopup = null;

preview.style.display = "block";

btnNewWindow.classList.remove("closePopup");

btnNewWindow.innerText = "Open Popup ";

}

messageFromChildWindow = (msg) => {

if (msg === 'closed') {

closePopup();

reloadPreview();

}

btnNewWindow.onclick = () => {

if (btnNewWindow.classList.contains("closePopup")) {

windowPopup.close();

closePopup();

}

else {

openPopup();

}

reloadPreview();

}

window.onbeforeunload = function () {

windowPopup.close();

};

btnFormat.onclick = () => {

if (!btnFormat.classList.contains("addCode")) {

for (i = 0; i < itemArea.length; i++) {

if (!itemArea[i].classList.contains("active")) {

itemArea[i].classList.add("active");

}

HTMLEditor.value = "<!DOCTYPE html>\n"

+ "<html lang=\"en\"> \n"

+ "<head>\n"

+ " <meta charset=\"UTF-8\">\n"

+ " <meta name=\"description\" content=\"The HTML5 Herald\">\n"

+ " <meta name=\"author\" content=\"Developer\">\n"

+ " <meta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\">\n"

+ " <title>Document<\/title>\n"

+ " <link rel=\"stylesheet\" href=\"\">\n"

+ "<\/head>\n"

+ "<body>\n"

+ " <h2 id=\"demo\">Click me, please !!!<\/h2>\n"

+ " <script src=\"\"><\/script>\n"

+ "<\/body>\n"

+ "<\/html>";

CSSEditor.value = "h2 { \n"

+ " font-style: italic;\n"

+ " color: red;\n"

+ "}";

JSEditor.value = "let demoID = document.getElementById(\"demo\");\n"

+ " demoID.onclick = () => {\n"

+ " demoID.innerHTML = \"You click at: \" + new Date().toLocaleTimeString()\n"

+ " + \" - \" + new Date().getMilliseconds();\n"

+ "}";

}

else {

HTMLEditor.value = "";

CSSEditor.value = "";

JSEditor.value = "";

}

btnFormat.classList.toggle("addCode");

reloadPreview();

}

document.getElementById("btnRotate").onclick = () => {

editBox.classList.toggle("rotate");

}

document.body.onclick = () => {

let thisID = event.target.id;

let navID = String(thisID.match(/HTMLNav|CSSNav|JSNav/i));

if (navID != null) {

let areaID = navID.replace("Nav", "Area");

let areaNode = document.getElementById(areaID);

areaNode.classList.toggle("active");

}

};

let writeWindow = (w) => {

w.document.open();

w.document.write(HTMLEditor.value);

let css = document.createElement("style");

let js = document.createElement("script");

css.innerHTML = CSSEditor.value;

js.innerHTML = JSEditor.value;

w.document.head.append(css);

w.document.body.append(js);

w.document.close();

}

let reloadPreview = () => {

let bodyFrame = null;

if (windowPopup != null) {

bodyFrame = windowPopup.document.body;

}

else {

bodyFrame = preview;

}

bodyFrame.innerHTML = "";

let iframeNode = document.createElement("iframe");

bodyFrame.appendChild(iframeNode);

let myFrame = bodyFrame.getElementsByTagName("iframe")[0];

writeWindow(myFrame.contentWindow);

}

document.onkeyup = () => {

reloadPreview();

};

</script>

</body>

</html>

2. Bản 2.0

3. Bản 3.0

Framework

AJAX – Asynchronous JavaScript and XML