Array Methods to Manipulate Strings
In this lesson we will study various ways to manipulate strings using array methods in JavaScript.
We'll cover the following...
We'll cover the following...
Arrays have a number of methods that can be used to manipulate existing arrays.
The concat() and slice() methods
The Listing below demonstrates two of them, concat(), and slice().
Listing: Exercise/index.html
<!DOCTYPE html> <html> <head> <title>Concat and slice</title> <script> var fruits = ["apple", "banana"]; var fruit2 = fruits.concat(["orange", "lemon"], "pear"); console.log(fruit2.toString()); var fruit3 = fruit2.slice(2, 4); console.log(fruit3.toString()); </script> </head> <body> Listing 7-18: View the console output </body> </html>
This code snippet produces this output:
apple,banana,orange,lemon,pearorange,lemon
The concat() method returns a new array comprised of this array joined with other arrays and values. In this listing, fruit2 is assembled from the original contents of fruits and from the items in the ["orange", "lemon"] array, plus “pear,” as shown in the ...