javaScript: Why does toString() not work directly with a number but with a number variable declared?

Question

y = 15;
let x = y.toString(10);
console.log(x)

This prints '15' but

let x = 15.toString(10);
console.log(x)

gives Error: Invalid or unexpected token Why?

The snippet tool's syntax highlighting gets confused for the same reason. — RemcoGerlich, Jul 19 '18 at 09:13
@James Thorpe I looked for this thoroughly on stack overflow before asking and nothing remotely similar was even among the 10 suggestions when I was typing the title. If this already has an answer, kindly provide the link to the same and I shall willingly delete my question. — Upasana Sengupta, Jul 19 '18 at 09:30
@UpasanaSengupta The link to the other Q&A is at the top of the post in the yellow box - being marked as a duplicate isn't a bad thing - hopefully you still get your answer, and if your question is phrased slightly differently to the other, it will act as a sign post for future searches to hopefully find the answer also. — James Thorpe, Jul 19 '18 at 09:32

score 5 · Answer 1 · answered Jul 19 '18 at 09:10

5

It works with another dot for separating the property from number.

let x = 15..toString(10);
console.log(x);

answered Jul 19 '18 at 09:10

Nina Scholz

You definitely got some nice syntax tricks :) – sjahan Jul 19 '18 at 09:16
Is this because the first point after the number should mean the decimal point? – Upasana Sengupta Jul 19 '18 at 09:28
right, the dot of a number has a higher precence. – Nina Scholz Jul 19 '18 at 09:31

1 Answers1