I found this questions asking how to do this in many different forums, so I will describe here how to implement a solution using PHP and AJAX.
The logical flow for the problem should be:
Write an event handler for the first drop down box to get …
Viewers will learn about basic arrays, how to declare them, and how to use them.
Introduction and definition:
Declare an array and cover the syntax of declaring them:
Initialize every index in the created array:
Example/Features of a basic arr…
Learn how to create flexible layouts using relative units in CSS. New relative units added in CSS3 include vw(viewports width), vh(viewports height), vmin(minimum of viewports height and width), and vmax (maximum of viewports height and width).