JavaScript(JS) JS trim a string

here's how you can trim a string using JavaScript:

let str = "  Hello, world!  ";
let trimmedStr = str.trim();

console.log(trimmedStr); // Output: "Hello, world!"

In this code, we have a string str with whitespace characters at the beginning and end. To trim the string, we simply call the trim() method on the string, which removes any whitespace characters from the beginning and end of the string. We then assign the trimmed string to a new variable trimmedStr and log it to the console.

The output of the console.log() statement will be the trimmed string, which in this case is "Hello, world!".