Javascript Vs 代码中的字符串类型转换问题

Question

Can anyone tell me whats wrong with my code? i have just started learning Javascript and currently on type conversions.

 let main = true; console.log(typeof main); main = string(main); console.log(typeof main);

the first two lines of code correctly shows type of main as boolean but when in the thrid line i convert it to string, it doesn't show anything.

Using VS CODE Editor.

Answer 1

Correct class is, String not string

Replace

main = string(main)

with

 main = String(main)

Answer 2

Use toString for cast:

 let main=true; alert(typeof main); main = main.toString(); alert(typeof main);