Can you write ANY JavaScript number using only these 3 symbols?

I've given myself a challenge to write any JavaScript number using only 3 symbols, plus, left square bracket, and right square bracket. Spoiler - it was a success! Number generator / visualizer: https://jsfiddle.net/davcal/0oqd8m5s/9/ Codegolf question: https://codegolf.stackexchange.com/questions/206717/get-string-with-javascript-using-only-the-symbols-from?noredirect=1#comment490250_206717