Answers for "javascript check if variable is undefined typeof"

if type undefined

if (typeof input !== "undefined") {
    // do stuff
}

Posted by: Guest on July-28-2021

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

Code answers related to "javascript check if variable is undefined typeof"