Dynamic typing in JavaScript - Mini Project: Build & Apply

Dynamic typing in JavaScript

📖 Scenario: Imagine you are building a simple calculator that can add numbers or join words. JavaScript lets you change the type of a variable anytime. This is called dynamic typing.

🎯 Goal: You will create a variable, change its type, and see how JavaScript handles it.

📋 What You'll Learn

Create a variable called value and assign a number to it

Create a variable called text and assign a string to it

Change the variable value to a string

Use a console.log to show the final values

💡 Why This Matters

🌍 Real World

Dynamic typing helps when you want to store different kinds of data in the same variable during a program.

💼 Career

Understanding dynamic typing is important for JavaScript developers to write flexible and bug-free code.

1

Create a variable with a number

Create a variable called value and assign the number 10 to it.

Javascript

// Create a variable called value and assign 10
// Your code here

Need a hint?

Use let to create a variable and assign the number 10.

2

Create a variable with a string

Create a variable called text and assign the string 'hello' to it.

Javascript

let value = 10;
// Create a variable called text and assign 'hello'
// Your code here

Need a hint?

Use let to create a variable and assign the string 'hello'.

3

Change the variable type

Change the variable value to the string '10'.

Javascript

let value = 10;
let text = 'hello';
// Change value to the string '10'
// Your code here

Need a hint?

Assign the string '10' to the variable value.

4

Display the final values

Use console.log to print the values of value and text.

Javascript

let value = 10;
let text = 'hello';
value = '10';
// Print value and text
// Your code here

Need a hint?

Use console.log(value); and console.log(text); to show the values.