find the length of a string in typescript

To find the length of a string in TypeScript, you can use the .length property. Here's an example:

index.ts
const myString: string = "Hello, world!";
const stringLength: number = myString.length;

console.log(stringLength); // Output: 13
130 chars
5 lines

In the code snippet above, we've declared a variable myString and assigned it the value of the string "Hello, world!". We then use the .length property to find the length of this string, and store the result in a variable stringLength. Finally, we log the value of stringLength to the console.

Note that the .length property is a built-in function of the string data type in TypeScript.