Examples of mandatory type conversions for typescript

Forced type conversions for typescript

Converting a number to a string in typescript will cause an error:

var a:number = 12345;
var b:string = <string> A;
Laygroundsingle.ts (24,18): Error ts2352:neither type ' number ' nor type ' string ' is assignable to the other.

This writing is not an error, but there are no eggs to use:

var a:number = 12345;
var b:string = <string><any> A;
Console.log (typeof B)
"Number" playgroundsingle.js:19:1
Or is it straightforward to use JavaScript in the right way:

var b:string = string (a);
Or
var b:string = a.tostring ();
Notice the difference between the new string () and string ():

var a:number = 12345;
When using new, the type must be string instead of string, or it cannot be compiled through
var b:string = new String (a);
It doesn't matter if you don't use new
var c:string = string (a);
Console.log (a);
Console.log ('--------b ');
Console.log (typeof B);
Console.log (b);
Console.log (b.length);
Console.log ('--------c ');
Console.log (typeof c);
Console.log (c);
Console.log (c.length);

The results are as follows:

12345 Playgroundsingle.js:22:9
"--–b" Playgroundsingle.js:23:9
"Object" Playgroundsingle.js:24:1
String ["1", "2", "3", "4", "5"] Playgroundsingle.js:25:9
5 Playgroundsingle.js:26:9
"--–c" Playgroundsingle.js:27:9
"String" Playgroundsingle.js:28:1
"12345" Playgroundsingle.js:29:9
5
(End of full text)