 Hi everyone, in this tutorial, we're going to talk about that how to replace all occurrences of a string in JavaScript by using regular expressions. In order to do that, I'm going to create a variable, let's call it name, this variable will contain some text, for example, my name is John. And now let's say that we want to change something or replace something into this text with some other text. For example, I'm going to change this letter N with some other letter, but you could also change or replace every occurrence of some word or some text inside this string by using regular expressions. First, I'm going to use this variable name, and I'm going to use replace method. And inside this replace method, I'm going to use regular expression. So I want to change every occurrence of this letter N with some other letter. I want to replace all these letters with a new letter. So I want to check for this combination throughout the all string. So I'm going to use G flag, G flag stands for global. So this regular expression is going to search inside this string for all occurrences of letter N. And then I'm going to say that we want to replace that, for example, with three letters A. Okay, now I'm going to press enter. And as you can see, every letter N inside this string is replaced by three As by using regular expressions. That's all in this tutorial. Don't forget to subscribe to my channel. See you in the next tutorial.