Finding a Remainder in JavaScript help me pease

[gbengajnr]

Tell us what’s happening:

Your code so far

// Only change code below this line

var remainder;
var %;
remainder = 2;
 % = remainder;

Your browser information:

User Agent is: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:65.0) Gecko/20100101 Firefox/65.0.

Link to the challenge:
https://learn.freecodecamp.org/javascript-algorithms-and-data-structures/basic-javascript/finding-a-remainder-in-javascript

[snowmonkey]

So it explains the remainder operator, % (which i always called the modulus but…), and how it is used to return any remainder. So

321 % 100 = ?

[gbengajnr]

tried it , not still working

[snowmonkey]

var remainder = ••••• % •••••;

What do you suppose they want for the two missing values?

[lasjorg]

var %;

% is not a valid variable name, it is an operator. It can only do one thing, it’s operation.

% = remainder

You did it again, remember what i said about the left-hand side? You can not assign values to operators, they are what they are and you can not change their meaning.

You can’t do this (luckily).

var +;
var -;
+ = -;

Example of assignments of operations.

var valueOfAddition = 5 + 5;
var valueOfSubtraction = 10 - 5;
var valueOfRemainder = 10 % 2;

---

Side note: There is some unfortunate use of the = sign in the assignment text which I would like to change, possibly to the word is. At this point in the learning process, i think we should avoid using = to mean equal to.

[camper]

@snowmonkey

which i always called the modulus but…

@snowmonkey, I thought the same thing at first:

@camper

In the Basic JavaScript: Finding a Remainder in JavaScript , there’s a note about the remainder operator:

Note
The remainder operator is sometimes incorrectly referred to as the “modulus” operator. It is very similar to modulus, but does not work properly with negative numbers.

I didn’t know it wasn’t a true modulo in JavaScript as I’m used to calling the % operator the modulo operator and assuming it works that way. MDN confirms this:

Remainder (%)

The remainder operator returns the remainder left over when one operand is divided by a second operand. It always takes the sign of the dividend, not the divisor. It uses a built-in modulo function to produce the result, which is the integer remainder of dividing var1 by var2 — for example — var1 modulo var2 . There is a proposal to get an actual modulo operator in a future version of ECMAScript, the difference being that the modulo operator result would take the sign of the divisor, not the dividend.

Wikipedia’s Common Pitfalls of the Modulo Operation section shows an example of what to look out for when using JavaScript’s remainder operator ( % ).