Answers for "javascript check variable for undefined"

javascript check for undefined

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

Posted by: Guest on July-22-2019

js check if undefined

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

Posted by: Guest on July-15-2020

check undefined in javascript

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

Posted by: Guest on May-29-2021

Code answers related to "javascript check variable for undefined"