modify array elements javascript
Using a FOR loop, write a function addNumber which adds the argument n to each
number in the array arr and returns the updated arr:
const addNumber=(arr, n)=>{
let arr1=[];
for(let i=0;i<Math.max(arr.length);i++){
arr1.push((arr[i]||0)+n)
}
return arr1;
}
console.log(addNumber([4, 5, 6], 7)); // expected log [11, 12, 13]6 ways to modify an array javascript
let browsers = ['chrome', 'firefox', 'edge'];
browsers.unshift('safari');
// add an element at the beginning of array
console.log(browsers); // ["safari", "chrome", "firefox", "edge"]
let browsers = ['chrome', 'firefox', 'edge'];
browsers.push('safari');
// add an element at the end of array
console.log(browsers); // ["chrome", "firefox", "edge", "safari"]
let browsers = ['chrome', 'firefox', 'edge'];
browsers.shift();
// Delete first element of array
console.log(browsers); // ["firefox", "edge"]
let browsers = ['chrome', 'firefox', 'edge'];
browsers.pop();
//delete last elemnent of array
console.log(browsers); // ["chrome", "firefox"]
// Add and remove anywhere you want
//Add
var fruits = ["Banana", "Orange", "Apple", "Mango"];
function myFunction() {
fruits.splice(3, 0, "Lemon", "Kiwi");
//fruits.splice(Where to add, what to delete, "Lemon", "Kiwi");
document.getElementById("demo").innerHTML = fruits;
}
//output Banana,Orange,Apple,Lemon,Kiwi,Mango
//Delete
var fruits = ["Banana", "Orange", "Apple", "Mango"];
function myFunction() {
fruits.splice(2, 1);
// fruits.splice(where to delete, how many);
document.getElementById("demo").innerHTML = fruits;
}// output: Banana,Orange,MangoCopyright © 2021 Codeinu
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