Answers for "javascript var is undefined if"

20

javascript check for undefined

if (typeof myVariable === 'undefined'){
    //myVariable is undefined
}
Posted by: Guest on July-22-2019
0

nodejs check if variable is undefined

if ( typeof query !== 'undefined' && query )
{
  //do stuff if query is defined and not null
}
else
{

}
Posted by: Guest on December-25-2020

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