Below is the example of Array sort() method.
- Program 1:
<script>
// JavaScript to illustrate sort() function
function
func() {
// Original string
var
arr = [
"Geeks"
,
"for"
,
"Geeks"
]
document.write(arr);
document.write(
"<br>"
);
// Sorting the array
document.write(arr.sort());
}
func();
</script>
- Output:
Geeks,for,Geeks Geeks,Geeks,for
The arr.sort() method is used to sort the array in place in a given order according to the compare() function. If the method is omitted then the array is sorted in ascending order.
Syntax:
arr.sort(compareFunction)
Parameters: This method accept a single parameter as mentioned above and described below:
- compareFunction: This parameters is used to sort the elements according to different attributes and in the different order.
- compareFunction(a,b) < 0
- compareFunction(a,b) > 0
- compareFunction(a,b) = 0
Then a comes before b in the answer.
Then b comes before a in the answer.
Then the order of a and b remains unchanged.
Return value: This method returns the reference of the sorted original array.
Below examples illustrate the JavaScript Array sort() method:
var arr = [2, 5, 8, 1, 4] document.write(arr.sort()); document.write(arr);
Output:
1,2,4,5,8 1,2,4,5,8
var arr = [2, 5, 8, 1, 4] document.write(arr.sort(function(a, b) { return a + 2 * b; })); document.write(arr);
Output:
2,5,8,1,4 2,5,8,1,4
Code for the above method is provided below:
Program 1:
<script> // JavaScript to illustrate sort() function function func() { //Original string var arr = [2, 5, 8, 1, 4] //Sorting the array document.write(arr.sort()); document.write( "<br>" ); document.write(arr); } func(); </script> |
Output:
1,2,4,5,8 1,2,4,5,8
Program 2:
<script> // JavaScript to illustrate sort() function function func() { // Original array var arr = [2, 5, 8, 1, 4]; document.write(arr.sort( function (a, b) { return a + 2 * b; })); document.write( "<br>" ); document.write(arr); } func(); </script> |
Output:
4,1,8,5,2 4,1,8,5,2
Supported Browsers: The browsers supported by JavaScript Array sort() method are listed below:
- Google Chrome
- Microsoft Edge
- Mozilla Firefox
- Safari
- Opera