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Chris Bongers
Chris Bongers

Posted on • Originally published at daily-dev-tips.com

Vanilla JavaScript Comparison Operators

Yesterday we looked at the difference between the == and === comparison operator. These are used to compare two values or objects. But there are more comparison operators in JavaScript we can leverage.

JavaScript Comparison Operators

Within JavaScript, we can leverage the following comparison operators. I've written down a table below to have a quick reference.

Operator Description Comparing Return
== Equal to x == 10
x == 3
x == "3"
false
true
true
=== Equal value and type x === 3
x === "3"
true
false
!= Not equal x != 10
x != "3"
true
false
!== Not equal value and type x !== "3"
x !== 3
true
false
> Bigger than x > 2 true
< Smaller than x < 4 true
>= Bigger than or equal x >= 3 true
<= Smaller than or equal x <= 3 true

The == and === we discussed in detail yesterday.

JavaScript != and !== Comparison

As you can guess, these are very similar to the == and === but the ! Means not in most programming languages.
So these will compare if the value is NOT what we compare it to.
And the !== will even check for the correct type.

x = 3;

<!-- != comparison -->
console.log(x != 10) // true
console.log(x != "3") // false

<!-- !== comparison -->
console.log(x !== "3") // true
console.log(x !== 3) // false
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As you can see in the second example it will think the string number three is wrong.

JavaScript Smaller and Bigger Than Comparison

The next ones are all in regards to smaller than or bigger than:

<!-- > comparison -->
console.log(x > 2) // true

<!-- < comparison -->
console.log(x < 4) // true

<!-- >= comparison -->
console.log(x >= 3) // true

<!-- <= comparison -->
console.log(x <= 3) // true
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So note > is just for bigger than and >= also includes the actual number itself.
Same goes for < and <=.

Feel free to explore the following Codepen.

See the Pen Vanilla JavaScript Comparison Operators by Chris Bongers (@rebelchris) on CodePen.

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