Andmapco - dev team

// listingId = '', 0, null, undefined, false //let listingId if ( typeof listingId === 'undefined' ) console . log ( 'listingId is undefined' ) else console . log ( listingId ) if (!! listingId ) console . log ( listingId ) else console . log ( 'listingId does not found' ) if ( listingId ) console . log ( listingId ) else console . log ( 'listingId does not found' ) if ( listingId === undefined ) console . log ( 'listingId does not found' ) else console . log ( listingId )

To install Quokka: https://quokkajs.com/docs/ Once the extension is installed, press  Ctrl/Cmd + Shift + P  to display the editor’s command palette: export const arrayToObjectWithValue = array => array . reduce (( obj , item ) => { obj [ item . name ] = item . value return obj }, {}) export const objectToArray = obj => Object . keys ( obj ). map ( key => { return { name: key , value: obj [ key ] } }) const arr = [{ name: 'test' , value: 123 }, { name: 'test1' , value: 12 }] const obj = arrayToObjectWithValue ( arr ) console . log ( obj ) const obj2 = { test: 123 , test1: 222 } const arr2 = objectToArray ( obj2 ) console . log ( arr2 ) screen shot: