Good

Today, let's talk about numbers in variable. Just like in mathematics, we can add, minus, divide or multiple numbers. In Javascript, we can do all that and more. Below is the the following mathematical operations we can do in Javascript:
+ means addition
- means subtraction
* means multiplication
/ means division
% means modulo

I know the last operation looks strange. You may be thinking that's percentage but it simply means a remainder after dividing a number. For instance:

let adekunle = 7 % 2;

Javascript will return the result as 1 because the remainder we will have after using 2 to divide 7 will be 1. How about:

let ciroma = 10 % 5;

The above result in Javascript will be 0 because the the remainder we will get after using 5 to divide 10 will be 0. You can try out other 4 operators in your computer since is already what we are familiar with.

Dremca:
Today, let's talk about numbers in variable. Just like in mathematics, we can add, minus, divide or multiple numbers. In Javascript, we can do all that and more. Below is the the following mathematical operations we can do in Javascript:
+ means addition
- means subtraction
* means multiplication
/ means division
% means modulo

I know the last operation looks strange. You may be thinking that's percentage but it simply means a remainder after dividing a number. For instance:

let adekunle = 7 % 2;

Javascript will return the result as 1 because the remainder we will have after using 2 to divide 7 will be 1. How about:

let ciroma = 10 % 5;

The above result in Javascript will be 0 because the the remainder we will get after using 5 to divide 10 will be 0. You can try out other 4 operators in your computer since is already what we are familiar with.

For starters like me, pls how can I understand clearly the method of the end result pls kindly explain better...
Cos when 10%5= 0 and 7%2=1
Does it mean 11%5 will be = 1?
Pls kindly explain further

updatechange:




For starters like me, pls how can I understand clearly the method of the end result pls kindly explain better...
Cos when 10%5= 0 and 7%2=1
Does it mean 11%5 will be = 1?
Pls kindly explain further

using % sign(modulus) means u are looking for the remainder. We know that if we are dividing 11%5, (that is 5 will go into 11 twice and the remainder is 1 ) so ur answer will be 1

You are very correct but it will be confusing for beginners since ES6 is used more often.

akus6060:
U are really doing a nice and perfect job by breaking it down to the nearest minimum so that beginners can get the message u are passing across. But u would have explained about ES6 (that gave rise to let and const) because when learning JavaScript, what we first encounter is var declaration which was used for earlier version of JavaScript.

akus6060:
using % sign(modulus) means u are looking for the remainder. We know that if we are dividing 11%5, (that is 5 will go into 11 twice and the remainder is 1 ) so ur answer will be 1

Great thanks, so what I will like to know now is how they all being put in use. *+-%

A common use of modulo is when we want to write a Javascript program for finding even or odd numbers. There are other use cases. Learning programing is like knowing the uses of all carpentry tools like hammer, saw, nail etc. So is now left for you to know the tool you need in solving the problem.

updatechange:


Great thanks, so what I will like to know now is how they all being put in use. *+-%

Let's talk about other operators that can be done with numbers. They are:

++ means increment operator
-- means decrement operator

The increment operator increases the number by 1 when is run in Javascript while decrement operator decreases the number by 1 when run in Javascript.

For instance:

let increment = 5;
increment++;

We can use any variable name with the counter. It is most common using counter instead but still remember you can use any variable name.

We first declare the variable to be 5 and any we ran the code, it will be increased by increased. If we ran the increment operator, it will no longer be 5 but will be 6. If we run it the second time, it will 7. If we run it the third time, it be 8. So the number keeps increasing each time we run the increment operator.

Same rule Applies to the decrement operator only that the number decreases by 1 instead of increasing by 1. For instance:

let decrement = 10;
decrement--;

Hello guys, if you have questions on what I have explained so far, please ask.