JavaScript Negative Indexing Surprise

let a = [0,1,2,3]; a[-2] undefined wait, JS doesnt have negative indexing? never has been

Two astronauts stand on a spacewalk, with one pointing a gun at the other. A JavaScript console shows that accessing an array with a negative index returns “undefined,” while the caption jokes that JavaScript never had negative indexing. The meme is used as a reaction to realizing a supposedly expected programming feature does not exist. EN: Two astronauts stand on a spacewalk, with one pointing a gun at the other. A JavaScript console shows that accessing an array with a negative index returns “undefined,” while the caption jokes that JavaScript never had negative indexing. The meme is used as a reaction to realizing a supposedly expected programming feature does not exist.

• @profunctor_io / 4966 2020-07-19