What does javascript void 0 mean

Question

What do certain hrefs mean exactly?
For the same objective, one can use href="javascript:" But however, for the earlier and outdated internet softwares versions, the void(0) part was used where the URL methods of Javascript were different. The respective IE7 manages and works precisely wherein the shorthand was not functional. 

• I've also seen href="javascript://", is this better? –
  href="javascript://" is not working for me void(0) works perfectly. 

•  Which browser did you use back then? href="javascript://" and href="javascript:void(0)" are equivalent. // is a JS comment.

Answer 1

The href of the link helps with the redirection of the internet with the use of the Javascript URL to a normal plain version of the text with the evaluating result of the Javascript. However, the internet application stays on the same given page without a defined result. The void(0) term is a minimal and easy script that evaluates to the undefined.