Javascript Undefined

ÖsszesGIF-ekMatricákMémek
a pair of hearts with the word javascript on one
a computer screen shows where to get apps
a screenshot of a my board with a to do list
enough is enough is written on a picture of a person
a cartoon dog says " hold on " in white letters
Be Happy GIF
a man sitting in front of a computer with the words undefined is not a function
three women in silver jumpsuits with the words null and void above them
a cartoon duck wearing a hat and the words josh is online behind it
a girl in a pink dress is standing on a stage with the words " raizel isnt online all is well " on the bottom
a man in a polka dot shirt stands in front of a park with the word confidence written on the bottom
a pixel art drawing of a sheep holding a fireball and a flame .