Stopwatch Tutorial - Free JavaScript Project | 100 JS Projects

Tip Calculator

In this project, our aim is to build a modern tip calculator. The project's primary interface comprises a container labeled "Tip Calculator" with two input fields: one for the bill amount and the other for the tip percentage. The tip calculator has a modern design that is styled using CSS. We utilized JavaScript to obtain the values of the two input fields and calculate the total amount based on these values.

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Temperature Converter

This project aims to create a temperature converter for beginners. The final version of the project includes three inputs for Celsius, Fahrenheit, and Kelvin temperature formats. When you change any of these inputs, for example, if you choose 100 degrees Celsius, you will see the equivalent Celsius value in Fahrenheit and Kelvin formats. Additionally, if you change one input, you will see a real-time change inside the other inputs. For instance, changing the Fahrenheit input to 100 degrees will show you that it is equal to 37 degrees Celsius and 311 Kelvin. To create this project, we will learn how to use an "onchange" event listener to track changes inside the inputs. We will also use the switch statement to track changes based on the name of the input we are working on. Additionally, we will use CSS to give the project a modern look, inspired by newMorphISM design. In summary, this project will help us learn how to create a temperature converter using JavaScript and CSS, and we will learn how to track changes using event listeners and switch statements.

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Weight Converter

Let's create a weight converter project that converts pounds to kilograms. The webpage features an input field where users can enter a weight in pounds, and the webpage automatically displays the equivalent weight in kilograms. After 10 seconds, the result is removed, and the input field is emptied using the 'set time out' method. We've also incorporated an error handling feature to handle negative input numbers. If the user enters a negative number, the webpage displays an error message, "Please enter a valid number." We'll learn how to handle error situations and remove the error message after two seconds using an event listener for the input field. The event listener will call a function that performs the desired actions.

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Simple StopwatchHTML, CSS & JavaScript Project

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