in compare method why we taking a and b for sorting in javascript

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Sara
04 Nov 2018
1for compare and sort method:-
2  
3function compare(a,b) {
4    return a - b;
5}
6------------------
7
8var numbers = [1,5,3.14];
9compare(1,5);     // Returns -4, a is less than b
10compare(1,3.14);  // Return -2.14, a is less than b
11compare(5,3.14);  // returns 1.86, a is greater than b