Shubham TiwariHello 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())
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 ]
- 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)
Output -
olleh
- 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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