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Create simple text editor (javascript)

Tags:

javascript

text-editor

I would like to create a simple text editor in Javascript. The challenge for me is: the buttons above my text-editor should be adjusted on the content of the DOM. For example: if the cursor is within a 'ul'-tag in my text-editor, only button 'li' should be displayed.

I already created a 'content-editable div', but I don't know where to look next. Can someone help me with some ideas? If I can do this with help of an existing JS-text-editor, please say. 

<html>
<head>
    <style>
        #textEditor {
            border: 1px solid black; display:block; width: 300px; height: 200px;
        }
    </style>
    <script>
        var options = ['ul','div'];
        var subOptions = {
            'ul':['li'],
            'div':['div','span', 'p']
        };
    </script>

</head>
<body>
    <div id="textEditor" contenteditable="true"></div>
</body>
</html>
like image 358
user1806756 Avatar asked May 04 '17 09:05

user1806756

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How do I create a rich text editor in HTML?

In the Content Type Builder page, add the Rich Text Editor (RTE) field to it. In the Edit Properties section of the RTE field, under Editor Version, select Latest. Under the Editor Type, select Custom, and choose the formatting options you want to include in the RTE field.

Which text editor is used for JavaScript?

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3 Answers

I Create a simple & rich text editor using the only javascript. Especially I create this for my powerBI custom visual. You can use it in any project.

    function chooseColor(){
      var mycolor = document.getElementById("myColor").value;
      document.execCommand('foreColor', false, mycolor);
    }

    function changeFont(){
      var myFont = document.getElementById("input-font").value;
      document.execCommand('fontName', false, myFont);
    }

    function changeSize(){
      var mysize = document.getElementById("fontSize").value;
      document.execCommand('fontSize', false, mysize);
    }

    function checkDiv(){
      var editorText = document.getElementById("editor1").innerHTML;
      if(editorText === ''){
        document.getElementById("editor1").style.border = '5px solid red';
      }
    }

    function removeBorder(){
      document.getElementById("editor1").style.border = '1px solid transparent';
    }
   
body {
    font: 400 16px/1.4 'serif';
    }
#container #containerHeader{
    text-align: center;
    cursor:move;
}
#container #editor1 {
    border: 1px solid grey;
    height: 100px;
    width: 602px;
    margin: 0px auto 0;
    padding:10px;
   }
#container fieldset {
    margin: 2px auto 0px;
    width: 600px;
    height:26px;
    background-color: #f2f2f2;
    border:none;
}
#container button {
    width: 5ex;
    text-align: center;
    padding: 1px 3px;
    height:30px;
    width:30px;
    background-repeat: no-repeat;
    background-size: cover;
    border:none;
}
#container img{
      width:100%;
}
#container .bold{
background-image: url('data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAEsAAABLCAYAAAA4TnrqAAAABHNCSVQICAgIfAhkiAAAAAlwSFlzAAAuIwAALiMBeKU/dgAAABl0RVh0U29mdHdhcmUAd3d3Lmlua3NjYXBlLm9yZ5vuPBoAAAJmSURBVHic7drPi05RHMfx18igGaaJzbAQShby22ZYKBb+CKyMJTsryo/IQigWUjbKnoWVpJSy8TOpIckCC0Xj1zTKGItLWcyZnmbuuY/z+L7rbO73PN/P93y65z73nHsIgiAIgiAIgiAIgiAIgiD43+lqSGc+1qB3Gr/9gfd4h5E6i/oX2YdRTNTQnuA4Fjc6gobYqLoz6jDq7/YVxzC7uaHk57D6jfq73cLCpgYzK3P+RZnz78ANzM2sg/xmNcEgLjQh1AlmwRA25RZpl1nXVa8trbYB7MbLRL4uHMlbcn7OmfzBfG2a+frxKJHzO/pmWO+UlDYNR1RTbjLmYHtO8dLMggd4nogtyylcolnwKnF9IKdoqWb1J65/yilaolkLsSERe5tTuESzjmJeInY3p3BJZvXgDPYn4k+ln2W10K5V+3pcarFvN5ZgCxZM0e/sTItqN6mX0rrbYw3MkpKmYYrP2IWfuYU6wayTeNaEUCeYdQhrmxDqBLP6cFW1NsxKu/4NX+Nmi327VcuYrdK7CmuwFxdnXFkbqXOLpgenE/km8KKGeqekpGk4ioM4n4ivxOqcBZRk1h+OYSwRG8wpXKJZH1W7pZOxPKdwiWaR/ozfnVO0VLNWJK5/ySlaolmbsSoRG84pXJpZ/biciI3jTk7xEszqUp2a2YP7WJfod1t1NKlYmtqimcC23IMp4c5qhSsyT0E6w6yHONCEUG6zPmTOfw87VRuAxZPr5N8YTmlgW6ZphvBNPSYN4wSWNjqC3zR1WrlXtZs5ndPK46rp/Ea1LgyCIAiCIAiCIAiCIAiCIAjaxi96FfJoiZEgRAAAAABJRU5ErkJggg==');
}
#container .italic{
    background-image: url('data:image/png;base64,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');
}
#container .underline{
    background-image: url('data:image/png;base64,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');
}
#container .align-left{
    background-image : url('data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAEsAAAA1CAAAAAAsDUmHAAAAIGNIUk0AAHomAACAhAAA+gAAAIDoAAB1MAAA6mAAADqYAAAXcJy6UTwAAAACYktHRAAAqo0jMgAAAAlwSFlzAAAuIwAALiMBeKU/dgAAAAd0SU1FB+MIHAYHAD13ih8AAAIrSURBVEjHzZaxTxRBFMa/N7OH0FJqSwnChsTYnomKnJUKFOo1JrbGwpBYmwCV0X9AvMRK1IJ4OTtjYyCQ44xWtNpaa9x5z+IIt7vHbGYeV3DlJvfLm2++b76XCEb2S3DGWeJIRxBLJZboJxShAkvo94uuajBJH00ewZIj1J8bu4Y1LLPd/jLRh/VZLtnaPacTjGp7b5suyev1C5zp5CL8LGhPuASnFJ9xGXm9rNRXN0QVAZInV8Tm75FkfeWHSi+eTkueAHGaKv3Fpux7w6xDGTOcx8G3EeQx5m+WKlgiUZZgkJ9Ff9/sB9+jzN8dF/KwhOR2OzyPhrc+mmFYn8X2fXuMw8VPOu+W2HrmwmFUHhMcQjxnJMyAasEZIuAifHpZaTRbMXrduwnru0fCq5WDYL14bqHKq4LFxRh/SZW/yEU8OWQrMwR72jjmWE65DQxmHORRPRdT+S2UT10dKr1a6m2hB5vKfuTm60LXOtveTEj1GJJpLTeczefxG/BPe3u9hhTyOAWj7EeDqUI/Gtxa6Cj1yq7dgcnPJeZDq6vSi9P7pqA9SMYeqv011LXItKyhvRB0+s11QIjp7ZN7+ZjFUb19Ys8cZ9v0voejpmcr3kKhp2sU3h2yuu7tWmc/r8WckTeu1523H3dgI/JY46918ep1HiYJP6PBBa/2Fksv9yL6MZtf9vYjyXjneS+8H2cfT3i1B8nksxiLS2U/ShaxRkvlXjjaPOJMsf4DQ22vjD/V/uUAAAAASUVORK5CYII=');
    width:40px;
}

#container .align-right{
    background-image:url('data:image/png;base64,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');
    width:40px;
}
#container .align-center{
    width: 38px;
    background-size: contain;
    background-image:url('data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABQAAAAOCAYAAAAvxDzwAAAABGdBTUEAALGPC/xhBQAAADRJREFUOBFjYGBg2ArE/6mEtzIBDaImADlsCAJSwhSkFgVQGoYjIMwIpdfRdAhJUYMrHQIAWPdBdW2q70gAAAAASUVORK5CYII=');
}

#container .redo-apply{
    background-image: url('data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAEsAAABLCAYAAAA4TnrqAAAABHNCSVQICAgIfAhkiAAAAAlwSFlzAAAuIwAALiMBeKU/dgAAABl0RVh0U29mdHdhcmUAd3d3Lmlua3NjYXBlLm9yZ5vuPBoAAAKJSURBVHic7du7axRRGIbxn260MELQIoIIFjYBa01lI0btFVEQRBtbSeEFUmhnbeEfoOK1EkQQKxsLUbH00gQLxesuRBANMRZrIJHd2T3jzsyOfA98zdnZc9555sxyZnaGIAiCIAjqw2HcwTXsrjjLUHMBi8vqF85UmmhIWY95K2Ut1dkKcw0lEzqLCmEdWINPQljfHMCCENY3x/UWNlNZuiEkhCUSwhIJYYmEsERCWCIhLJFShK361w56MIot2IS1BY91DEd7bHMOFwvOkcQmnMZjvY92FTVd3K73zyjOY071QrLqJ7YXo6A/tuKF6kX0W6fy7ORIni/9xQQeYXwAfZVFq4pBN+C16mdKSr37k7t0bucIW2W1MFmIiR5Mat8LzzqC09iGRsFZRrT/zOglamfBObpyLyPYA4yVlKMfUU0VihrDjy7BnmNdSTmGXhQc6hBqqXaVlKFfUTtKytOVGZ3DvSlp/NqIgss6B7xVwtgNXO8yfqE/5nkXpd3WKc28QfpkBDdwMGObJvbi6aAHXz3g/hYH3N9yGrgiW1QL+xUgisHLKooGruJIxjYt7MOTokIM4tqwDC7JFtXEFJ4VGaIOM2scJzM+L0UU9ZhZ47pfLjWxR3shXDh1mFmv8KFD+1cliqIesuZxAt+Xtc0qWRT1OA3hvvbdiynt29YP8a3sEHWRBe+111mVUYfTcGgIWQmErARCVgIhK4GQlUDISiBkJRCyEghZCYSsBEJWAiErgZCVQMhKIGQlELISCFkJhKwEQlYCISuBkJVAXlkLXdqLfOSocvLKetmlfTZnf/81m/HRykcT32JjlaGKJu/D/HO4qf2+4hfc1X5B8vOAcgVBEARBMJT8BsNk0YqzYcGdAAAAAElFTkSuQmCC');
}
#container .undo-apply{
    background-image: url('data:image/png;base64,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');
}
#container .unorderedlist{
    background-image: url('data:image/png;base64,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');
}
#container .orderedlist{
    background-image: url('data:image/png;base64,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');
}
#container .strikethrough{
    background-image: url('data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAB4AAAAeCAQAAACROWYpAAAAAmJLR0QA/4ePzL8AAABFSURBVEjHY2AY2eAww38i4GHsmv8TCXFqxmYYPjVIzj5MUPNhXM7G5Q2ywKhm2mo+TG7ipFjzYAGjiYTs8uwwHTUPZwAAW5aYHd3noZcAAAAASUVORK5CYII=');
}
#container .color-apply{
    width: 20px;
}
#container #input-font{
    width: 100px;
    height: 25px;
}
[contentEditable=true]:empty:not(:focus):before{
    content:attr(data-text);
    color:#888;
}
#container .loader {
    border: 6px solid #f3f3f3; 
    border-top: 6px solid #3498db; 
    border-radius: 50%;
    width: 20px;
    height: 20px;
    animation: spin 2s linear infinite;
    margin: 0 auto;
    line-height: 20px;
}

/* @keyframes spin {
0% { transform: rotate(0deg); }
100% { transform: rotate(360deg); }
} */
<!DOCTYPE html>
<html>

<head>
  <meta charset='utf-8'>
  <script type="text/javascript" src="custom-text-editor.js"></script>
  <link type="text/css" rel="stylesheet" href="custom-text-editor.css"/>
</head>

<body>
  <div id="container" >
    <fieldset>
      <button class="fontStyle italic" onclick="document.execCommand('italic',false,null);" title="Italicize Highlighted Text"></button>
      <button class="fontStyle bold" onclick="document.execCommand( 'bold',false,null);" title="Bold Highlighted Text"></button>
      <button class="fontStyle underline" onclick="document.execCommand( 'underline',false,null);"></button>
      <select id="input-font" class="input"  onchange="changeFont (this);">
        <option value="Arial">Arial</option>
        <option value="Helvetica">Helvetica</option>
        <option value="Times New Roman">Times New Roman</option>
        <option value="Sans serif">Sans serif</option>
        <option value="Courier New">Courier New</option>
        <option value="Verdana">Verdana</option>
        <option value="Georgia">Georgia</option>
        <option value="Palatino">Palatino</option>
        <option value="Garamond">Garamond</option>
        <option value="Comic Sans MS">Comic Sans MS</option>
        <option value="Arial Black">Arial Black</option>
        <option value="Tahoma">Tahoma</option>
        <option value="Comic Sans MS">Comic Sans MS</option>
      </select>
      <button class="fontStyle strikethrough" onclick="document.execCommand( 'strikethrough',false,null);"><strikethrough></strikethrough></button>
      <button class="fontStyle align-left" onclick="document.execCommand( 'justifyLeft',false,null);"><justifyLeft></justifyLeft></button>
      <button class="fontStyle align-center" onclick="document.execCommand( 'justifyCenter',false,null);"><justifyCenter></justifyCenter></button>
      <button class="fontStyle align-right" onclick="document.execCommand( 'justifyRight',false,null);"><justifyRight></justifyRight></button>
      <button class="fontStyle redo-apply" onclick="document.execCommand( 'redo',false,null);"><redo></redo></button>
      <button class="fontStyle undo-apply" onclick="document.execCommand( 'undo',false,null);"><undo></undo></button>
      <button class="fontStyle orderedlist" onclick="document.execCommand('insertOrderedList', false, null);"><insertOrderedList></insertOrderedList></button>
      <button class="fontStyle unorderedlist" onclick="document.execCommand('insertUnorderedList',false, null)"><insertUnorderedList></insertUnorderedList></button>    
      <input class="color-apply" type="color" onchange="chooseColor()" id="myColor"> 

      <!-- font size start -->
      <select id="fontSize" onclick="changeSize()">
        <option value="1">1</option>      
        <option value="2">2</option>
        <option value="3">3</option>
        <option value="4">4</option>
        <option value="5">5</option>
        <option value="6">6</option>
        <option value="7">7</option>
        <option value="8">8</option>
      </select>
      <!-- font size end -->
      
  </fieldset>

  <div id="editor1" contenteditable="true" data-text="Enter comment...."></div>
  
</div>

</body>
</html>
like image 162
Namrata Surushe Avatar answered Oct 01 '22 03:10

Namrata Surushe

You can make a contenteditable html element so the user can edit it.

<div id="myDiv" contenteditable = "true" style = "border: 1px solid black">
&lt;!DOCTYPE html&gt;<br>
&lt;html&gt;<br>
&lt;head&gt;<br>
&nbsp;<br>
&nbsp;<br>
&lt;/head&gt;<br>
&lt;body&gt;<br>

&nbsp;<br>
&nbsp;<br>
&lt;/body&gt;<br>
&lt;/html&gt;
</div>

<script>
w3CodeColor(document.getElementById("myDiv"));

function w3CodeColor(elmnt, mode) {
  var lang = (mode || "html");
  var elmntObj = (document.getElementById(elmnt) || elmnt);
  var elmntTxt = elmntObj.innerHTML;
  var tagcolor = "mediumblue";
  var tagnamecolor = "brown";
  var attributecolor = "red";
  var attributevaluecolor = "mediumblue";
  var commentcolor = "green";
  var cssselectorcolor = "brown";
  var csspropertycolor = "red";
  var csspropertyvaluecolor = "mediumblue";
  var cssdelimitercolor = "black";
  var cssimportantcolor = "red";
  var jscolor = "black";
  var jskeywordcolor = "mediumblue";
  var jsstringcolor = "brown";
  var jsnumbercolor = "red";
  var jspropertycolor = "black";
  elmntObj.style.fontFamily = "Consolas,'Courier New', monospace";
  if (!lang) {lang = "html"; }
  if (lang == "html") {elmntTxt = htmlMode(elmntTxt);}
  if (lang == "css") {elmntTxt = cssMode(elmntTxt);}
  if (lang == "js") {elmntTxt = jsMode(elmntTxt);}
  elmntObj.innerHTML = elmntTxt;

  function extract(str, start, end, func, repl) {
    var s, e, d = "", a = [];
    while (str.search(start) > -1) {
      s = str.search(start);
      e = str.indexOf(end, s);
      if (e == -1) {e = str.length;}
      if (repl) {
        a.push(func(str.substring(s, e + (end.length))));
        str = str.substring(0, s) + repl + str.substr(e + (end.length));
      } else {
        d += str.substring(0, s);
        d += func(str.substring(s, e + (end.length)));
        str = str.substr(e + (end.length));
      }
    }
    this.rest = d + str;
    this.arr = a;
  }
  function htmlMode(txt) {
    var rest = txt, done = "", php, comment, angular, startpos, endpos, note, i;
    comment = new extract(rest, "&lt;!--", "--&gt;", commentMode, "W3HTMLCOMMENTPOS");
    rest = comment.rest;
    while (rest.indexOf("&lt;") > -1) {
      note = "";
      startpos = rest.indexOf("&lt;");
      if (rest.substr(startpos, 9).toUpperCase() == "&LT;STYLE") {note = "css";}
      if (rest.substr(startpos, 10).toUpperCase() == "&LT;SCRIPT") {note = "javascript";}
      endpos = rest.indexOf("&gt;", startpos);
      if (endpos == -1) {endpos = rest.length;}
      done += rest.substring(0, startpos);
      done += tagMode(rest.substring(startpos, endpos + 4));
      rest = rest.substr(endpos + 4);
      if (note == "css") {
        endpos = rest.indexOf("&lt;/style&gt;");
        if (endpos > -1) {
          done += cssMode(rest.substring(0, endpos));
          rest = rest.substr(endpos);
        }
      }
      if (note == "javascript") {
        endpos = rest.indexOf("&lt;/script&gt;");
        if (endpos > -1) {
          done += jsMode(rest.substring(0, endpos));
          rest = rest.substr(endpos);
        }
      }
    }
    rest = done + rest;
    for (i = 0; i < comment.arr.length; i++) {
        rest = rest.replace("W3HTMLCOMMENTPOS", comment.arr[i]);
    }
    return rest;
  }
  function tagMode(txt) {
    var rest = txt, done = "", startpos, endpos, result;
    while (rest.search(/(\s|<br>)/) > -1) {
      startpos = rest.search(/(\s|<br>)/);
      endpos = rest.indexOf("&gt;");
      if (endpos == -1) {endpos = rest.length;}
      done += rest.substring(0, startpos);
      done += attributeMode(rest.substring(startpos, endpos));
      rest = rest.substr(endpos);
    }
    result = done + rest;
    result = "<span style=color:" + tagcolor + ">&lt;</span>" + result.substring(4);
    if (result.substr(result.length - 4, 4) == "&gt;") {
      result = result.substring(0, result.length - 4) + "<span style=color:" + tagcolor + ">&gt;</span>";
    }
    return "<span style=color:" + tagnamecolor + ">" + result + "</span>";
  }
  function attributeMode(txt) {
    var rest = txt, done = "", startpos, endpos, singlefnuttpos, doublefnuttpos, spacepos;
    while (rest.indexOf("=") > -1) {
      endpos = -1;
      startpos = rest.indexOf("=");
      singlefnuttpos = rest.indexOf("'", startpos);
      doublefnuttpos = rest.indexOf('"', startpos);
      spacepos = rest.indexOf(" ", startpos + 2);
      if (spacepos > -1 && (spacepos < singlefnuttpos || singlefnuttpos == -1) && (spacepos < doublefnuttpos || doublefnuttpos == -1)) {
        endpos = rest.indexOf(" ", startpos);
      } else if (doublefnuttpos > -1 && (doublefnuttpos < singlefnuttpos || singlefnuttpos == -1) && (doublefnuttpos < spacepos || spacepos == -1)) {
        endpos = rest.indexOf('"', rest.indexOf('"', startpos) + 1);
      } else if (singlefnuttpos > -1 && (singlefnuttpos < doublefnuttpos || doublefnuttpos == -1) && (singlefnuttpos < spacepos || spacepos == -1)) {
        endpos = rest.indexOf("'", rest.indexOf("'", startpos) + 1);
      }
      if (!endpos || endpos == -1 || endpos < startpos) {endpos = rest.length;}
      done += rest.substring(0, startpos);
      done += attributeValueMode(rest.substring(startpos, endpos + 1));
      rest = rest.substr(endpos + 1);
    }
    return "<span style=color:" + attributecolor + ">" + done + rest + "</span>";
  }
  function attributeValueMode(txt) {
    return "<span style=color:" + attributevaluecolor + ">" + txt + "</span>";
  }
  function commentMode(txt) {
    return "<span style=color:" + commentcolor + ">" + txt + "</span>";
  }
  function cssMode(txt) {
    var rest = txt, done = "", s, e, comment, i, midz, c, cc;
    comment = new extract(rest, /\/\*/, "*/", commentMode, "W3CSSCOMMENTPOS");
    rest = comment.rest;
    while (rest.search("{") > -1) {
      s = rest.search("{");
      midz = rest.substr(s + 1);
      cc = 1;
      c = 0;
      for (i = 0; i < midz.length; i++) {
        if (midz.substr(i, 1) == "{") {cc++; c++}
        if (midz.substr(i, 1) == "}") {cc--;}
        if (cc == 0) {break;}
      }
      if (cc != 0) {c = 0;}
      e = s;
      for (i = 0; i <= c; i++) {
        e = rest.indexOf("}", e + 1);
      }
      if (e == -1) {e = rest.length;}
      done += rest.substring(0, s + 1);
      done += cssPropertyMode(rest.substring(s + 1, e));
      rest = rest.substr(e);
    }
    rest = done + rest;
    rest = rest.replace(/{/g, "<span style=color:" + cssdelimitercolor + ">{</span>");
    rest = rest.replace(/}/g, "<span style=color:" + cssdelimitercolor + ">}</span>");
    for (i = 0; i < comment.arr.length; i++) {
        rest = rest.replace("W3CSSCOMMENTPOS", comment.arr[i]);
    }
    return "<span style=color:" + cssselectorcolor + ">" + rest + "</span>";
  }
  function cssPropertyMode(txt) {
    var rest = txt, done = "", s, e, n, loop;
    if (rest.indexOf("{") > -1 ) { return cssMode(rest); }
    while (rest.search(":") > -1) {
      s = rest.search(":");
      loop = true;
      n = s;
      while (loop == true) {
        loop = false;
        e = rest.indexOf(";", n);
        if (rest.substring(e - 5, e + 1) == "&nbsp;") {
          loop = true;
          n = e + 1;
        }
      }
      if (e == -1) {e = rest.length;}
      done += rest.substring(0, s);
      done += cssPropertyValueMode(rest.substring(s, e + 1));
      rest = rest.substr(e + 1);
    }
    return "<span style=color:" + csspropertycolor + ">" + done + rest + "</span>";
  }
  function cssPropertyValueMode(txt) {
    var rest = txt, done = "", s;
    rest = "<span style=color:" + cssdelimitercolor + ">:</span>" + rest.substring(1);
    while (rest.search(/!important/i) > -1) {
      s = rest.search(/!important/i);
      done += rest.substring(0, s);
      done += cssImportantMode(rest.substring(s, s + 10));
      rest = rest.substr(s + 10);
    }
    result = done + rest;
    if (result.substr(result.length - 1, 1) == ";" && result.substr(result.length - 6, 6) != "&nbsp;" && result.substr(result.length - 4, 4) != "&lt;" && result.substr(result.length - 4, 4) != "&gt;" && result.substr(result.length - 5, 5) != "&amp;") {
      result = result.substring(0, result.length - 1) + "<span style=color:" + cssdelimitercolor + ">;</span>";
    }
    return "<span style=color:" + csspropertyvaluecolor + ">" + result + "</span>";
  }
  function cssImportantMode(txt) {
    return "<span style=color:" + cssimportantcolor + ";font-weight:bold;>" + txt + "</span>";
  }
  function jsMode(txt) {
    var rest = txt, done = "", esc = [], i, cc, tt = "", sfnuttpos, dfnuttpos, compos, comlinepos, keywordpos, numpos, mypos, dotpos, y;
    for (i = 0; i < rest.length; i++)  {
      cc = rest.substr(i, 1);
      if (cc == "\\") {
        esc.push(rest.substr(i, 2));
        cc = "W3JSESCAPE";
        i++;
      }
      tt += cc;
    }
    rest = tt;
    y = 1;
    while (y == 1) {
      sfnuttpos = getPos(rest, "'", "'", jsStringMode);
      dfnuttpos = getPos(rest, '"', '"', jsStringMode);
      compos = getPos(rest, /\/\*/, "*/", commentMode);
      comlinepos = getPos(rest, /\/\//, "<br>", commentMode);
      numpos = getNumPos(rest, jsNumberMode);
      keywordpos = getKeywordPos("js", rest, jsKeywordMode);
      dotpos = getDotPos(rest, jsPropertyMode);
      if (Math.max(numpos[0], sfnuttpos[0], dfnuttpos[0], compos[0], comlinepos[0], keywordpos[0], dotpos[0]) == -1) {break;}
      mypos = getMinPos(numpos, sfnuttpos, dfnuttpos, compos, comlinepos, keywordpos, dotpos);
      if (mypos[0] == -1) {break;}
      if (mypos[0] > -1) {
        done += rest.substring(0, mypos[0]);
        done += mypos[2](rest.substring(mypos[0], mypos[1]));
        rest = rest.substr(mypos[1]);
      }
    }
    rest = done + rest;
    for (i = 0; i < esc.length; i++) {
      rest = rest.replace("W3JSESCAPE", esc[i]);
    }
    return "<span style=color:" + jscolor + ">" + rest + "</span>";
  }
  function jsStringMode(txt) {
    return "<span style=color:" + jsstringcolor + ">" + txt + "</span>";
  }
  function jsKeywordMode(txt) {
    return "<span style=color:" + jskeywordcolor + ">" + txt + "</span>";
  }
  function jsNumberMode(txt) {
    return "<span style=color:" + jsnumbercolor + ">" + txt + "</span>";
  }
  function jsPropertyMode(txt) {
    return "<span style=color:" + jspropertycolor + ">" + txt + "</span>";
  }
  function getDotPos(txt, func) {
    var x, i, j, s, e, arr = [".","<", " ", ";", "(", "+", ")", "[", "]", ",", "&", ":", "{", "}", "/" ,"-", "*", "|", "%"];
    s = txt.indexOf(".");
    if (s > -1) {
      x = txt.substr(s + 1);
      for (j = 0; j < x.length; j++) {
        cc = x[j];
        for (i = 0; i < arr.length; i++) {
          if (cc.indexOf(arr[i]) > -1) {
            e = j;
            return [s + 1, e + s + 1, func];
          }
        }
      }
    }
    return [-1, -1, func];
  }
  function getMinPos() {
    var i, arr = [];
    for (i = 0; i < arguments.length; i++) {
      if (arguments[i][0] > -1) {
        if (arr.length == 0 || arguments[i][0] < arr[0]) {arr = arguments[i];}
      }
    }
    if (arr.length == 0) {arr = arguments[i];}
    return arr;
  }
  function getKeywordPos(typ, txt, func) {
    var words, i, pos, rpos = -1, rpos2 = -1, patt;
    if (typ == "js") {
      words = ["abstract","arguments","boolean","break","byte","case","catch","char","class","const","continue","debugger","default","delete",
      "do","double","else","enum","eval","export","extends","false","final","finally","float","for","function","goto","if","implements","import",
      "in","instanceof","int","interface","let","long","NaN","native","new","null","package","private","protected","public","return","short","static",
      "super","switch","synchronized","this","throw","throws","transient","true","try","typeof","var","void","volatile","while","with","yield"];
    }
    for (i = 0; i < words.length; i++) {
      pos = txt.indexOf(words[i]);
      if (pos > -1) {
        patt = /\W/g;
        if (txt.substr(pos + words[i].length,1).match(patt) && txt.substr(pos - 1,1).match(patt)) {
          if (pos > -1 && (rpos == -1 || pos < rpos)) {
            rpos = pos;
            rpos2 = rpos + words[i].length;
          }
        }
      }
    }
    return [rpos, rpos2, func];
  }
  function getPos(txt, start, end, func) {
    var s, e;
    s = txt.search(start);
    e = txt.indexOf(end, s + (end.length));
    if (e == -1) {e = txt.length;}
    return [s, e + (end.length), func];
  }
  function getNumPos(txt, func) {
    var arr = ["<br>", " ", ";", "(", "+", ")", "[", "]", ",", "&", ":", "{", "}", "/" ,"-", "*", "|", "%", "="], i, j, c, startpos = 0, endpos, word;
    for (i = 0; i < txt.length; i++) {
      for (j = 0; j < arr.length; j++) {
        c = txt.substr(i, arr[j].length);
        if (c == arr[j]) {
          if (c == "-" && (txt.substr(i - 1, 1) == "e" || txt.substr(i - 1, 1) == "E")) {
            continue;
          }
          endpos = i;
          if (startpos < endpos) {
            word = txt.substring(startpos, endpos);
            if (!isNaN(word)) {return [startpos, endpos, func];}
          }
          i += arr[j].length;
          startpos = i;
          i -= 1;
          break;
        }
      }
    }
    return [-1, -1, func];
  }
}

</script>
like image 22
Aiden Avatar answered Oct 01 '22 03:10

Aiden

Implementing your own javascript text editor is very challenging, I would recommend you to have a look at the medium editor

If you really want to build your own, and you want to know what element the users cursor is in. You will need to use the selection API which overall has great browsers support.

like image 21
realappie Avatar answered Oct 01 '22 01:10

realappie
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