replace a substring in a string in typescript

To replace a substring in a string in TypeScript, you can use the replace() method. The replace() method returns a new string where all occurrences of a specified substring are replaced with another substring.

Here's an example code snippet to replace a substring in a string in TypeScript:

index.ts
let originalString: string = "Hello, world!";
let substringToReplace: string = "world";
let newSubstring: string = "John";
let newString: string = originalString.replace(substringToReplace, newSubstring);

console.log(newString); // Output: Hello, John!
254 chars
7 lines

In the above code, we defined the original string Hello, world! and the substring to replace world. We also defined the new substring John that we want to replace the old substring with. We used the replace() method to replace all occurrences of the substring world with the new substring John.

The resulting string after replacement is then stored in the newString variable, which we log to the console using console.log(). The output is Hello, John!.

You can use this code snippet as a reference to replace a substring in a string in TypeScript.