How to use a do-while loop In Javascript
Similar to a while loop iterates the element an infinite of times .however whether the condition is true or false, the code is always run at least once.
- The do-while loop is used to print the alphabet from A to Z. A loop variable is taken to display of type ‘char’.
- The loop variable ‘i’ is initialized with the first alphabet ‘A’ and incremented by 1 on every iteration.
- In the loop, the character ‘i’ is printed as the alphabet.
Example: Below is the example that will print (A to Z) and (a to z) using for do-while loop.
Javascript
// Declaring Variableslet i;// Initializing i = 65 for Uppercase:i = 65;console.log("Alphabets form (A-Z) are:");do { console.log(String.fromCharCode(i)); i++;} while (i <= 90);i = 97;console.log("Alphabets from (a-z) are:");do { console.log(String.fromCharCode(i)); i++;} while (i <= 122); |
Output:
Alphabets form (A-Z) are:
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Alphabets from (a-z) are:
a b c d e f g h i j k l m n o p q r s t u v w x y z
JavaScript program to print Alphabets from A to Z using Loop
Our task is to print the alphabet from A to Z using loops. In this article, we will mainly focus on the following programs and their logic.
Below are the loops used to print Alphabets from A to Z:
Table of Content
- Using for loop
- Using the while loop
- Using a do-while loop