Increment a Number with JavaScript idk what's going on

JavaScript
1

What’s the problem

Your code so far


var myVar = 87;

// Only change code below this line
myVar = myVar++;

Your browser information:

User Agent is: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/75.0.3770.100 Safari/537.36.

Link to the challenge:
https://learn.freecodecamp.org/javascript-algorithms-and-data-structures/basic-javascript/increment-a-number-with-javascript

2

Hi ! you do not need to use equal sign when your are using ++ operator.

Below is the solution:

var myVar = 87;
// Only change code below this line
myVar++;

3

There is no problem. This is just showing you a shorthand syntax.

i = i+1;

Can be written as

i++;

Don’t read too much into it. They are just showing you another way to add 1 to a variable. It is very common to use this shorthand so it is important to know what it is, however there is no logic problem here. It is just syntax.

4

if you’re incrementing your variable by 1, like in the challenge
myVar = myVar + 1;
you can use a shorthand syntax: myVar++
what you’ve written is myVar = myVar++ which evaluate as myVar=myVar=myVar+1 which doesn’t make sense.
Solution for your problem is, replace your code myVar = myVar++; with myVar++; :slight_smile:

5

Also, see the difference between ++myVar and myVar++ :slight_smile: