如何将 JavaScript 中的数字转换为字符串？

Question

I want to convert a number to string in JS, which is the best and recommaded way to do that?

I have tried the method shared on W3school so far. but want to know the recommaded methods from experts

Answer 1

Seems that var str = '' + num is the fastest way to convert a number to a string (num being the number variable).

let num = 5
var str = '' + num

(results based on this benchmark: http://jsben.ch/#/ghQYR )

Answer 2

You can use the built in function: toString():

Example:
let number = 3
let stringed_number = number.toString()

Answer 3

All of these will work:

`${num}`
num.toString()
'' + num
String(num)

Answer 4

I recommend using. toLocaleString if you want pretty formatting, like commas or periods for grouping.

However if you know you don't want pretty formatting you should use.toString