Javascript Void 0 Kullanımı. Addition or concatenation is possible. The void operator is often used merely to obtain the undefined primitive value usually using void0.

Void keywords are also used to obtain undefined primitive values. This is often used with hyperlinks. There are two ways of using operand 0.
It is useful when we insert links.
Void 0 or void 0. But void with the operand 0 is preferred. The best way to use in line javascript using an elements href but without having to do any of the above is javascriptvoid0. In these cases the global variable undefined can be used.