This is a javascript function that acts like isset function in php
function isset($type) { return $type !== 'undefined'; }
#Usage isdef(typeof SOMETHING)
//Example //json data {"status": "error","set": "yes"} //if(isset(typeof status){console.log ('status exits')}else{console.log ('status does not exits')}} //Usage isdef(typeof SOMETHING)
//Example //json data {"status": "error","set": "yes"} //if(isset(typeof status){console.log ('status exits')}else{console.log ('status does not exits')}}