THECODEPROGRAM

Let's begin.

Array sort() method

sort() method returns the given array after sorting operation. It sort the array in ascending order in default condition. If we define a custom compare function, array will be sorted according to given sorting function.

• sort() : We can directly sort an array in ascending order with no sorting function.
• sort(compareFunction(a, b)) : We can use a comparing function for sorting the elements according to requirements. We decalre the function in a location and we can call in here. Also we can declare the compare function inline.
• sort((a, b) => { /*comparing logic*/ } ) : We can also use arrow declaration. We need to define the comparing logic for sorting algorithm.

All of above comparing methods returns the sorted array. According to specified comparing logic.

var nums = [33,2,67,4,1,9,23,90,-5];
var sorted = nums.sort();
console.log(sorted);

var names = ["Hamdi", "Burak", "Tufan", "Program", "The", "Code"];
var sortedNames = names.sort();
console.log(sortedNames);

var nums = [33,2,67,4,1,9,23,90,-5];
var names = ["Hamdi", "Burak", "Tufan", "Program", "The", "Code"];
var sortedNums = nums.sort((a, b) =>  a>=b ? 1 : -1);
var sortedNames = names.sort((a, b) => {
  if (a> b) return 1;
  else if (a< b) return -1;
  else return 0;
});

console.log(sortedNums);
console.log(sortedNames);

//Example Arrays
var nums = [33,2,67,4,1,9,23,90,-5];
var names = ["Hamdi", "Burak", "Tufan", "Program", "The", "Code"];

//Comparing Functions
function reverseCompare(a, b){
  if (a> b) return -1;
  else if (a< b) return 1;
  else return 0;
}
function compareNumbers(a, b){
     return a-b;
}

var sortedNums = nums.sort(compareNumbers);
var sortedNames = names.sort(reverseCompare);

console.log(sortedNums);
console.log(sortedNames);

We can also sort JSON objects with sort method in JavaScript. We need to declare a sorting function to compare the field that objects will be sorted. We can declare both arrow and normal function to sort objects.

var employees = [
  { name: 'Burak', salary: 2000 },
  { name: 'Hamdi', salary: 2250 },
  { name: 'Tufan', salary: 1825 },
  { name: 'The', salary: 2560 },
  { name: 'Code', salary: 1500 },
  { name: 'Program', salary: 5000 }
];
var salarySorted= employees.sort((a, b) =>  a.salary>=b.salary ? -1 : 1);
console.log(salarySorted);

var nameSorted= employees.sort((a, b) => {
  if (a.name> b.name) return 1;
  else if (a.name< b.name) return -1;
  else return 0;
});
console.log(nameSorted);

That is all in this article.

Have a good data sorting

Burak Hamdi TUFAN