# Integers in JavaScript

Integers are numbers that can be written without a fractional or decimal component. They include negative numbers (`-1`

, `-2`

, `-3`

, etc.), zero (`0`

), and whole numbers (`1`

, `2`

, `3`

, etc.). In JavaScript, all numbers fall under the `number`

data type. You can have numbers in strings, but they will not be handled like numbers.

Here is an example of how the JavaScript interpreter interprets numbers:

//remember to not use quotes //when initializing your numbers //quotes are for string values var x = 5; var y = 5.0; if (x === y) { document.write("x and y have the same value"); }

This example prints `x and y have the same value`

to the screen.

Here is another example:

var x = 5; var y = 5.1; if (x === y) { document.write("x and y have the same value"); } else { document.write("x and y do NOT have the same value"); }

In this example, `x and y do NOT have the same value`

gets printed to the screen.

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