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HTML JavaScript


JavaScript makes HTML pages more dynamic 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>
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The HTML <noscript> Tag

<noscript>Tags provide alternative content when scripts are not available, such as when the script is disabled by the browser, or when the browser does not support client-side scripting.

<noscript>The element can contain all the elements found in the body element of a normal HTML page.

Only displayed if script is not supported or disabled by the browser <noscript> Content in element:

Example

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

<noscript>Sorry, your program does not bolster JavaScript!</noscript>
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JavaScript experience (from this site 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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