> For the complete documentation index, see [llms.txt](https://codingzonebd.gitbook.io/html-elements/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://codingzonebd.gitbook.io/html-elements/html-javascript.md). # HTML JavaScript JavaScript makes HTML pages more dynamic and interactive.

{% code overflow="wrap" lineNumbers="true" %} ```markup

My First JavaScript

``` {% endcode %} ### The HTML \ ``` {% endcode %} ### A Taste of JavaScript Here are some examples of what JavaScript can do: {% code overflow="wrap" lineNumbers="true" %} ```markup

My First JavaScript

JavaScript can change the content of an HTML element:

This is a demonstration.

``` {% endcode %} {% code overflow="wrap" lineNumbers="true" %} ```markup

My First JavaScript

JavaScript can change the style of an HTML element.

``` {% endcode %} {% code overflow="wrap" lineNumbers="true" %} ```markup

My First JavaScript

Here, a JavaScript changes the value of the src (source) attribute of an image.

``` {% endcode %}

### The HTML \

` tag defines an alternate content to be displayed to users that have disabled scripts in their browser or have a browser that doesn't support scripts: {% code overflow="wrap" lineNumbers="true" %} ```markup <!DOCTYPE html> <html> <body> <p id="demo"></p> <script> document.getElementById("demo").innerHTML = "Hello JavaScript!"; </script> <noscript>Sorry, your browser does not support JavaScript!

A browser without support for JavaScript will show the text written inside the noscript element.

``` {% endcode %}