About the definition of javascript variable

Question

Possible Duplicate:
What’s the difference between “Array()” and “[]” while declaring a JavaScript array?

var all = [];
var all = new Array();

What is the difference between these two definitions? I can't make them clear.

score 0 · Answer 1 · answered Mar 30 '12 at 23:43

0

There is no difference. But best practice is to avoid using new on JavaScript primitive types.

answered Mar 30 '12 at 23:43

Ilia Frenkel

2

There *is* a difference, please read the linked question. – Jesse Good Mar 30 '12 at 23:44
For example: var all =[]; var all1= new Array(); the all1[2] may have undefined type, but variable all is always blank string, is it? – Sally Lou Mar 30 '12 at 23:57

1 Answers1