What browsers don't support JavaScript?

IE 3.0, Mosaic 3.0, NS 2.0, Opera 2.1. Other browsers that do not support JavaScript are Lynx, a multi-platform text browser and Amaya, an editor with browsing capabilities. And anyone who explicitly disables JavaScript.

At least 1 in 10 people who browse the internet have a browser that either can't handle JavaScript, or has JavaScript disabled.