Answers for "invert array js"

javascript reverse array

var arr = [34, 234, 567, 4];
print(arr);
var new_arr = arr.reverse();
print(new_arr);

js shuffle array

function shuffleArray(array) {
    for (let i = array.length - 1; i > 0; i--) {
        const j = Math.floor(Math.random() * (i + 1));
        [array[i], array[j]] = [array[j], array[i]];
    }
}

reverse array javascript

var rev = arr.reverse();

array reverse in javascript

var arr = [1, 2, 3, 4, 5, 6, 7];
console.log (arr.reverse ());

for (i = 0; i < arr.length / 2; i++) {
  var temp = arr[i];
   temp =arr[arr.length - 1 - i];
  temp = temp;
}
console.log (arr);

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>
        )
    }
}

reverse array javascript

// reverse array with recursion function
function reverseArray (arr){
if (arr.length === 0){
return []
}
  return [arr.pop()].concat(reverseArray(arr))
}
console.log(reverseArray([1, 2, 3, 4, 5]))