Answers for "check variable is undefined in javascript"

javascript check for undefined

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

Posted by: Guest on July-22-2019

checking if var is not defined js

if(typeof x !== 'undefined'){
  alert("Variable x is defined.");
}

Posted by: Guest on August-20-2020

undefined javascript check

if(undefinedElement === null) {
	console.log("Element is undefined");
}

Posted by: Guest on March-30-2020

Code answers related to "check variable is undefined in javascript"