Answers for "variable isset js"

javascript isset

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

Posted by: Guest on June-21-2019

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

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