Answers for "undefined js"

javascript check for undefined

if (typeof myVariable === 'undefined'){
    //myVariable is undefined
}

Posted by: Guest on July-22-2019

javascript typeof undfined

var x;
if (typeof x === 'undefined') {
   // these statements execute
}

Posted by: Guest on April-07-2020

js check if undefined

let foo = undefined
//will return true
typeof foo === 'undefined'

Posted by: Guest on July-15-2020

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

Code answers related to "undefined js"