Answers for "what is undefined javascript"

7

javascript if undefined

if(typeof comment === 'undefined') {

  alert('Variable "comment" is undefined.');

} else if(comment === null){

  alert('Variable "comment" is null.');

}
Posted by: Guest on March-25-2020
0

what is undefined in javascript

The undefined property indicates that a variable has not been assigned a value, 
or not declared at all.
Posted by: Guest on September-15-2021

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