Answers for "check if isset js"

javascript isset

if (typeof foo !== 'undefined') {
  
}

Posted by: Guest on June-21-2019

if (typeof obj.foo !== 'undefined') {
}

Posted by: Guest on September-07-2020

if (typeof obj.foo !== 'undefined') {
  // your code here
}

Posted by: Guest on October-09-2020

check if isset variable js

var status = 'Variable exists'

try {
  myVar
} catch (ReferenceError) {
  status = 'Variable does not exist'
}

console.log(status)

Posted by: Guest on November-20-2020

Code answers related to "check if isset js"