Javascript: var myObject = myObject || {};

I would like to know why some people declare javascript vars like below:



I did some google but dint
get the correct keywords. Please advice. Thank You.

Are you sure it is Javascript?

C# has the following


all this does is returns the _myObject if it not null and if it is then it creates a new instance of myObject and returns it after assigning it to _myObject. Perhaps the Javascript is the same?

The way it reads is (your sample):
my object = my object or new object.

I have a sneak suspicion it might be doing the same thing

when I name a variable like

var a = b || c ;

is so I can use it like this

//if true b or c equal 2
if(a == 2){document.write('either b or c equal 2')}