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Zester · 12-08-2005, 03:02 AM

sounds simple doesn't it? this is fucking driving crazy

lets say "myvar" was never mentioned in the code anywhere.
the following gives an error message "myvar is undefined" which I want to avoid:

Code:

if ( myvar = =  undefined )
{
   // do nothing
}

I also tried:

Code:

if ( myvar = =  null )
if ( myvar = =   0 )
if ( myvar = =   "" )
if ( myvar = =   '' )

of course I don't use spaces between the two "=" but that's just for displaying

12-08-2005, 03:02 AM
Zester Confirmed User Industry Role: Join Date: Jul 2003 Posts: 5,344	Javascript: How do I check if a var is null or hasn't been set?? sounds simple doesn't it? this is fucking driving crazy lets say "myvar" was never mentioned in the code anywhere. the following gives an error message "myvar is undefined" which I want to avoid: Code: if ( myvar = = undefined ) { // do nothing } I also tried: Code: if ( myvar = = null ) if ( myvar = = 0 ) if ( myvar = = "" ) if ( myvar = = '' ) of course I don't use spaces between the two "=" but that's just for displaying __________________ * Mainstream ? $65 per sale * new male contraception