First JavaScript Program

Problem solving with JavaScript

The basic tools for understanding the flow and the results of simple programs are execution sheetsThe execution sheet is a manual way of observing and updating the values of the variables at each step of the execution of a program. and flowchartsThe flowchart is a diagram that helps understand the sequence of instructions in a program having decision.. However, they become complicated when we have problems with a large number of decisions. Therefore, we provide executable embedded code widgets to observe the program output by executing it.

Note: We can run a program as many times as we want, to try out different inputs of variables. We can also edit these programs to observe the result of a change in a value or logic for our learning.

In JavaScript, we use prompt() for input (to read a value from the user), and console.log() for print (to display a value on the screen as output).

Hello World

It’s time to write our first program in JavaScript, which will display or log the message "Hello World!" on the console.