make text editor in html code example

Example 1: how to make a text editor in html

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';
    }

Example 2: text editor in html form

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
  <title>Edit Article</title>
  <meta http-equiv="content-type" content="text/html; charset=utf-8"/>
  <script type="text/javascript" src="ckeditor.js"></script>
</head>
<body>
  <h1>Edit Article</h1>
  <form action="form_handler.php" method="post">
    <div>
      <textarea cols="80" rows="10" id="content" name="content"> 
        <h1>Article Title</h1>
        <p>Here's some sample text</p>
      </textarea>
      <script type="text/javascript">
        CKEDITOR.replace( 'articleContent' );
      </script>
      <input type="submit" value="Submit"/>
    </div>
  </form>
</body>
</html>

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