What Is The HTML JavaScript

HTML JavaScript makes HTML pages more powerful and intelligent.

Example

My First JavaScript

Snap me to show Date and Time

The HTML <script> Tag

The HTML<script> tag is utilized to characterize a customer side content (JavaScript).

The <script> component either contains script proclamations, or it focuses to an outside script record through the src property.

Normal uses for JavaScript are picture control, structure approval, and dynamic changes of content.

To choose a HTML component, JavaScript regularly utilizes the document.getElementById() strategy.

This JavaScript model expresses “Hi JavaScript!” into a HTML component with id=”demo”:

Example

<script>
document.getElementById(“demo”).innerHTML = “Hello JavaScript!”;
</script>

Tip: You can learn significantly more about JavaScript in our JavaScript Tutorial.

A Taste of JavaScript

Here are a few instances of what JavaScript can do:

Example

JavaScript can change content:document.getElementById(“demo”).innerHTML = “Hello JavaScript!”;

Example

JavaScript can change styles:document.getElementById(“demo”).style.fontSize = “25px”;
document.getElementById(“demo”).style.color = “red”;
document.getElementById(“demo”).style.backgroundColor = “yellow”;

Example

JavaScript can change ascribes :document.getElementById(“image”).src = “picture.gif”;

The HTML <noscript> Tag

The HTML <noscript> tag characterizes a substitute substance to be shown to clients that have crippled contents in their program or have a program that doesn’t uphold scripts:

Example

<script>
document.getElementById(“demo”).innerHTML = “Hello JavaScript!”;
</script>
<noscript>Sorry, your browser does not support JavaScript!</noscript>

HTML Script Tags

Tag	Description
<script>	Defines a client-side script
<noscript>	Defines an alternate content for users that do not support client-side scripts