Get the first and last item in an Array - JS
I've modified your code :
var myArray = ['Rodel', 'Mike', 'Ronnie', 'Betus'];
function firstAndLast(array) {
var firstItem = myArray[0];
var lastItem = myArray[myArray.length-1];
var objOutput = {
first : firstItem,
last : lastItem
};
return objOutput;
}
var display = firstAndLast(myArray);
console.log(display);UPDATE: New Modification
var myArray = ['Rodel', 'Mike', 'Ronnie', 'Betus'];
function firstAndLast(array) {
var firstItem = myArray[0];
var lastItem = myArray[myArray.length-1];
var objOutput = {};
objOutput[firstItem]=lastItem
return objOutput;
}
var display = firstAndLast(myArray);
console.log(display);ES6
var objOutput = { [myArray[0]]: [...myArray].pop() }
var myArray = ['Rodel', 'Mike', 'Ronnie', 'Betus'];
var objOutput = { [myArray[0]]: [...myArray].pop() }
console.log(objOutput);As of 2021, you can use Array.prototype.at()
let colors = ['red', 'green', 'blue']
let first = colors.at(0) // red
let last = colors.at(-1) // blue
To read more about Array.prototype.at()
With ES6 and destructuring:
const myArray = ['Rodel', 'Mike', 'Ronnie', 'Betus'];
const { 0: first, length, [length -1]: last } = myArray //getting first and last el from array
const obj = { first, last }
console.log(obj) // { first: "Rodel", last: "Betus" }