# JavaScript sort numbers | Example code

Use Compare Function in the sort() method or Loops to sort numbers in JavaScript. Using the alone sort() method will get a weird result, there is numeric order.

```var numArray = [140000, 104, 99];
numArray = numArray.sort();
console.log(numArray)//  [ 104, 140000, 99 ]```

This is because the array got sorted in lexicographical order (that is, alphabetically), so each integer actually got coerced into a string type.

Solution

``sort(function(a, b){return a-b});``

## JavaScript sort numbers

Simple example code Sort Numeric Array using JavaScript. Sort numbers in ascending and descending order.

``````<!DOCTYPE html>
<html>
<body>
<script>

//Ascending
const points = [40, 100, 1, 5, 25, 10];
points.sort(function(a, b){return a-b});
console.log(points)

//descending
var arr = [100, 15, 20, 45, 30, 1];
arr.sort(function(a, b){return b-a});
console.log(arr);

</script>
</body>
</html> ``````

Output:

You can also use loops to sort the array elements. Here is a bubble sort (simple sorting technique) to sort the array of elements in ascending order.

``````<script>

// Sorting function
function Numeric_sort(ar) {

var i = 0, j;

while (i < ar.length) {
j = i + 1;
while (j < ar.length) {

if (ar[j] < ar[i]) {
var temp = ar[i];
ar[i] = ar[j];
ar[j] = temp;
}
j++;
}
i++;
}
}

var arr = [100, 15, 20, 45, 30, 1];

Numeric_sort(arr)
console.log(arr);

</script>``````

Output: [ 1, 15, 20, 30, 45, 100 ]

### How to sort an array of integers correctly

Answer: By default, the sort() method sorts elements alphabetically. To sort numerically just add a Sort Compare Function that handles numeric sorts.

This compares functions for arrays that don’t contain Infinity or NaN. (Because `Infinity - Infinity` is NaN, not 0).

``````<script>
var numArray = [100, 104, 99];
numArray.sort(function(a, b) {
return a - b;
});

console.log(numArray);
</script>``````

Output: [ 99, 100, 104 ]

Do comment if you have any doubt or suggestions on this JS number topic.

Note: The All JS Examples codes are tested on the Firefox browser and the Chrome browser.

OS: Windows 10

Code: HTML 5 Version

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