javascript reverse array
var arr = [34, 234, 567, 4];
print(arr);
var new_arr = arr.reverse();
print(new_arr);javascript reverse array
var arr = [34, 234, 567, 4];
print(arr);
var new_arr = arr.reverse();
print(new_arr);array reverse algorithm in js
let array1 = ["yes", "no", "maybe", "always", "sometimes", "never", "if"];
let array2 = [5,8,2,9,5,6,3,1];
function reverseArray(arr) {
var newArray = [];
for (var i = arr.length - 1; i >= 0; i--) {
newArray.push(arr[i]);
}
return newArray;
}
reverseArray(array1); // ["if", "never", "sometimes", "always", "maybe", "no", "yes"]
reverseArray(array2); // [1, 3, 6, 5, 9, 2, 8, 5]reverse array javascript
const list = [1, 2, 3, 4, 5];
list.reverse();Reverse an array java script
import React, { Component } from 'react';
export default class Slideshows extends Component {
constructor(){
super();
this.state = {
data:[
{ "id": "1", "name": 'Robert', "age": "21" },
{ "id": "2", "name": 'Sam', "age": "33" },
{ "id": "3", "name": 'Jerry', "age": "42" },
]
}
}
render() {
const reverseData = this.state.map((data, i) => {
return (
<li> {data.name} | {data.age} </li>
)
})
return (
<ul>
{reverseData}
</ul>
)
}
}js reverse
const array1 = ['one', 'two', 'three'];
console.log('array1:', array1);
//["one", "two", "three"]
const reversed = array1.reverse();
console.log('reversed:', reversed);
//["three", "two", "one"]
// Careful: reverse is destructive -- it changes the original array.
console.log('array1:', array1);
//["three", "two", "one"]Copyright © 2021 Codeinu
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