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HTML JavaScript


JavaScript make HTML pages progressively unique and interactive.

Insert a script
Step by step instructions to embed a JavaScript into a HTML document.

Use of the <noscript> tag
Step by step instructions to deal with programs that don't bolster scripting, or have scripting disabled.


The HTML <script> Tag

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

The <script> component either contains scripting explanations or it focuses to an outside content document through the src attribute.

Common utilizes for JavaScript are picture control, structure approval, and dynamic changes of content.

The content underneath composes Hello JavaScript! into a HTML component with id="demo":

Example

<script>
document.getElementById("demo").innerHTML = "Hello JavaScript!";
</script>
Try it yourself »

The HTML <noscript> Tag

The <noscript> tag is utilized to give a substitute substance to clients that have debilitated contents in their program or have a program that doesn't bolster customer side scripting.

The <noscript> component can contain every one of the components that you can discover inside the <body> component of a typical HTML page.

The content inside the <noscript> component might be shown if contents are not bolstered, or are debilitated in the client's browser:

Example

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

<noscript>Sorry, your program does not bolster JavaScript!</noscript>
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A Taste of JavaScript (From Our JavaScript Tutorial)

Here are a few instances of what JavaScript can do:

JavaScript can change HTML content:

document.getElementById("demo").innerHTML = "Hello JavaScript!";
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JavaScript can change HTML styles:

document.getElementById("demo").style.fontSize = "25px";
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JavaScript can change HTML attributes:

document.getElementById("image").src = "picture.gif";
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