replace method allows us to replace a character, word, or sentence with a string. For example.
let str = "Hello World!"; let new_str = str.replace("Hello", "Hi"); console.log(new_str); // Result: Hi World!
To replace a value on all instances of a regular expression with a
g modifier is set.
It searches for a string for a value or a regular expression and returns a new string with the value(s) replaced. It doesn't change the original string. Let's see the global case-insensitive replacement example.
let text = "Mr Blue has a blue house and a blue car"; let result = text.replace(/blue/gi, "red"); console.log(result); //Result: Mr red has a red house and a red car