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HTML | DOM onclick Event
  • Last Updated : 28 Jun, 2019

The HTML DOM onclick event occurs when the user clicks on an element.

HTML DOM onclick event supports All HTML elements, EXCEPT:

  • <base>
  • <bdo>
  • <br>
  • <head>
  • <html>
  • <iframe>
  • <meta>
  • <param>
  • <script>
  • <style>
  • <title>

Syntax:

In HTML:

<element onclick="myScript">

In JavaScript:



object.onclick = function(){myScript};

In JavaScript, using the addEventListener() method:

object.addEventListener("click", myScript);

Example 1: Using HTML




<!DOCTYPE html>
<html>
  
<body>
    <center>
        <h1 style="color:green">
          GeeksforGeeks
      </h1>
        <h2>HTML DOM onclick Event</h2>
        <button onclick="myFunction()">Click me</button>
  
        <p id="demo"></p>
  
        <script>
            function myFunction() {
                document.getElementById(
                  "demo").innerHTML = "GeeksforGeeks";
            }
        </script>
    </center>
</body>
  
</html>

Output:

Example 2: Using JavaScript




<!DOCTYPE html>
<html>
  
<body>
    <center>
        <h1 style="color:green">
          GeeksforGeeks
      </h1>
        <h2>HTML DOM onclick Event</h2>
        <p id="demo">Click me.</p>
  
        <script>
            document.getElementById("demo").onclick = function() {
                GFGfun()
            };
  
            function GFGfun() {
                document.getElementById(
                  "demo").innerHTML = "YOU CLICKED ME!";
            }
        </script>
    </center>
</body>
  
</html>

Output:
Before:

After:

Example 3: In JavaScript, using the addEventListener() method:




<!DOCTYPE html>
<html>
  
<body>
    <center>
        <h1 style="color:green">
          GeeksforGeeks
      </h1>
        <h2>HTML DOM onclick Event</h2>
        <p id="demo">Click me.</p>
  
        <script>
            document.getElementById(
              "demo").addEventListener("click", GFGfun);
  
            function GFGfun() {
                document.getElementById(
                  "demo").innerHTML = "YOU CLICKED ME!";
            }
        </script>
    </center>
</body>
  
</html>

Output:
Before:

After:

Supported Browsers: The browsers supported by DOM onclick Event are listed below:

  • Google Chrome
  • Internet Explorer
  • Firefox
  • Apple Safari
  • Opera
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