JavaScript Arrays Explained: Everything You Need to Know

Array is special type of object that is used to store similar kind of in a single variable

We can create an array in two ways by using literal and also by the help of new Array

wee can use the difference between these two usage

int arr=[9] <script>

 <script>
        var Arr =[9];
        document.writeln("The lenght of Arrr:"+Arr.length)
   const ar=new Array(3)
  document.writeln("The lenght of Ar:"+ar.length);
</script>

here we can see the difference the first one results as 1 but the second one gives the answer as 3 .

Modifying the elements in the array

let fruits =[‘apples’, ’banana’];

fruits[1]=’mango’;

we can give the mango to the index 1 and change the array.

Common array methods

fruits.push(‘cherry’);

it adds the fruits at the last

fruits.pop()

it removes the last element from the array.

fruits.unshift(‘cucmber’);

It adds the fruits at the begining

fruits.shift()

it remove the fruits from the beginning of the array.