| chapter | 4 |
|---|---|
| pageNumber | 33 |
The 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!{% hint style="warning" %}
To replace a value on all instances of a regular expression with a g modifier is set.
{% endhint %}
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