Do I have to use JavaScript?

Question

When does it become unavoidable and when would you want to choose JavaScript over server side when you have a choice?

Answer 1

When you need to change something on your page without reloading it.

Answer 2

Designer perspective:

• When you want to give more interactivity to your web page
• When you want to load stuff without reloading (i.e.: ajax for example)

When you shouldn't use:

• When You don't want to spend 1000 hours in pointless tries to disable the back arrow of your browser :)