  function getUser ( id , onSuccess , onFailure ) { $ . getJSON ( { url : ` https://api.github.com/users/ ${ id } ` , success : onSuccess , error : onFailure } ) } function getWeather ( user , onSuccess , onFailure ) { $ . getJSON ( { url : getLocationURL ( user . location . split ( ',' ) ) , success : onSuccess , error : onFailure , } ) } $ ( "#btn" ) . on ( "click" , ( ) => { getUser ( "tylermcginnis" , ( user ) => { getWeather ( user , ( weather ) => { updateUI ( { user , weather : weather . query . results } ) } , showError ) } , showError ) } )  I