How to validate empty in if condition

[SK36]

Hi all,

In catalog client script, when value is empty or null, how to deal in if condition?

eg:

Var val;                             //or val='' whatever. But it is empty

if(val != null || val !=''){    //its not working.

alert(val);

}

So, how to deal empty variable?

[Raghav Sharma24 · Accepted solution]

when you have two "NOT" conditions always use && between them instead of ||.

Try below:

Var val;                             

if(val !='' && val !=null){    

alert(val);

}

Please mark the answer correct/helpful accordingly.

[Community Alums]

Try below if condition if var is empty
if(!var){

//your code

}

Please mark as correct answer if this solves your issue.