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Asked: 2024-11-26T10:57:07+00:00

Array Methods in JS – reverse()

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Hello Guys today i will discuss reverse() array method in javascript
reverse() method is used to reverse array elements

Example –
[1,2,3,4,5]
After reversing
[5,4,3,2,1]

Let's get started…

Code Example 1 – 

const numberArray = [1,2,3,4,5]; const stringArray = ['A','B','C','D','E']; const booleanArray = [true,true,false,true,false]; const objectArray = [   {   name:"Shubham",   age:21   },   {   name:"Shivam",   age:25   },   {   name:"Bharat",   age:22   }, ] const mixedArray = [1,2,3,"A","B","C",true,false, {    name:"Shivam",   age:25 } ]    console.log(numberArray.reverse()) console.log(stringArray.reverse()) console.log(booleanArray.reverse()) console.log(objectArray.reverse()) console.log(mixedArray.reverse())
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Output – 

[ 5, 4, 3, 2, 1 ] [ 'E', 'D', 'C', 'B', 'A' ] [ false, true, false, true, true ] [   { name: 'Bharat', age: 22 },   { name: 'Shivam', age: 25 },   { name: 'Shubham', age: 21 } ] [ { name: 'Shivam', age: 25 }, false, true, 'C', 'B', 'A', 3, 2, 1 ]
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  • As you can see we have reverses the arrays containing number, strings, booleans, objects and mixed.

Code Example 2 – How to reverse a string 

const string = "hello" const stringArray2 = [] for (let i of string){   stringArray2.push(i) } stringArray2.reverse() let reversedStr = stringArray2.join("").toString() console.log(newStr)
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Output – 

olleh
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  • As you can see first we have converted the string into array with each character as an element of array then we applied the reverse() method on this array.
  • After that we have used the join(“”).toString() to again convert the array into string again.

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