Hi. I’ve learned how to use a variable that looks like this:
var x = 3;
I also know how to replace a string with another using String.replace(). That should looks like this:
console.log("Hello world".replace('Hello', 'Hi')); //Hi world
But I have a question.
Let’s consider that we substitute x = 5 and y = 5 + 5. The given code should look like this:
let x = 5;
var y = x + 5; //y is 10
console.log(y); //return 10
The given code above is the same as:
let x = 5;
var y = 5 + 5; //y is 10
console.log(5 + 5); //returns 10
And yeah. What is substitution in JavaScript? And how does it works??
Please answer.
Thanks!
@pummarinbest