Answers for "check if parameter is undefined javascript"

check if variable is undefined or null jquery

if (variable == null) {
    // variable is either null or undefined
}

Posted by: Guest on March-18-2020

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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