How do you assign default values to variables

Posted by Andre Scott | Updated on

You can use the logical or operator || in an assignment expression to provide a default value. The syntax looks like as below,

As per the above expression, variable ‘a ‘will get the value of ‘c’ only if ‘b’ is falsy (if is null, false, undefined, 0, empty string, or NaN), otherwise ‘a’ will get the value of ‘b’.

If you like this question & answer and want to contribute, then write your question & answer and email to freewebmentor[@] Your question and answer will appear on and help other developers.

Related Questions & Answers