HTML Heading

The HTML Heading refers to the 6 levels through <h1> to <h6>, h1 being the most important heading level and h6 of lowest importance. H1, H2, H3, H4, H5, H6 are the six headings.

NOTE − Heading are used by search engines (like google) for indexing the content of webpage.

Let’s see an example for HTML Heading −

Example

<!DOCTYPE html>
<html>
<head>
<title>HTML Heading</title>
<style>
   form {
      width:70%;
      margin: 0 auto;
      text-align: center;
   }
   * {
      padding: 2px;
      margin:5px;
   }
   input[type="button"] {
      border-radius: 10px;
   }
</style>
</head>
<body>
<form>
<fieldset>
<legend>HTML Heading</legend>
<input type="text" id="textSelect" placeholder="Type Heading Here...">
<div id="radioBut">
<label>H1</label><input class="radio" type="radio" name="heading" value="h1" checked>
<label>H2</label><input class="radio" type="radio" name="heading" value="h2">
<label>H3</label><input class="radio" type="radio" name="heading" value="h3">
<label>H4</label><input class="radio" type="radio" name="heading" value="h4">
<label>H5</label><input class="radio" type="radio" name="heading" value="h5">
<label>H6</label><input class="radio" type="radio" name="heading" value="h6">
</div>
<div>Heading Preview: <span id="headingPreview">Output will show up here</span></div>
<input type="button" onclick="changeHeading()" value="Preview">
</fieldset>
</form>
<script>
   var textSelect = document.getElementById("textSelect");
   var headingPreview = document.getElementById("headingPreview");
   function changeHeading() {
      if(textSelect.value === '')
         headingPreview.innerHTML = 'Write a Heading';
      else{
         for(var i=0; i<6; i++){
            var radInp = document.getElementsByClassName('radio')[i];
            if(radInp.checked === true && textSelect.value !== '')
               headingPreview.innerHTML ='<'+radInp.value+'>'+textSelect.value+'</'+radInp.value+'>';
         }
      }
   }
</script>
</body>
</html>

Output

This will produce the following output −

1) Before clicking ‘Preview’ button with text field empty −

HTML Heading

2) After clicking ‘Preview’ button with text field empty −

HTML Heading

3) After clicking ‘Preview’ button with text field not empty and ‘h6’ radio button checked −

HTML Heading

4) After clicking ‘Preview’ button with text field not empty and ‘h1’ radio button checked −

HTML Heading