How to build a JavaScript-based tool for personal budgeting and finance tracking?
13/03/2024
•
5
min
Building a JavaScript-based tool for personal budgeting and finance tracking involves creating a form where a user can enter income and expenses, a way to store and process these inputs, and a way to display results. Below are instructions on how to build a basic budgeting tool. This tool will take input from the user and display a summary of income, expenses, and remaining balance.
Step 1: Create the HTML
First, let's create a simple interface where the user can input their budget, income, and expenses.
<!DOCTYPE html>
<html>
<head>
<title>Personal Budgeting and Finance Tool</title>
</head>
<body>
<h1>Personal Budgeting and Finance Tool</h1>
<div>
<h2>Budget</h2>
<input type="Number" id="budget" placeholder="Enter your budget" />
</div>
<div>
<h2>Income</h2>
<input type="Number" id="income" placeholder="Enter your income"/>
</div>
<div>
<h2>Expenses</h2>
<input type="Number" id="expenses" placeholder="Enter expenses"/>
</div>
<div>
<h2>Summary</h2>
<p id="summary"></p>
</div>
<button onclick="calculate()">Calculate</button>
<script src="main.js"></script>
</body>
</html>
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The above HTML will display a form with fields for entering budget, income, and expenses, a button to perform the calculation, and a paragraph where the summary will be displayed.
Step 2: Create the JavaScript
With the HTML file done, now we will move onto creating the JS file that will handle the functionality of our budgeting tool.
In the same directory as your HTML file, create a file named main.js.
In this file, we first set up the calculate function that gets called when the user hits the Calculate button.
function calculate() {
var budget = Number(document.getElementById('budget').value);
var income = Number(document.getElementById('income').value);
var expenses = Number(document.getElementById('expenses').value);
var remaining = budget + income - expenses;
var summary = 'Your budget is $' + budget + ', your income is $' + income + ', your expenses are $' + expenses + ', and you have $' + remaining + ' remaining.';
document.getElementById('summary').innerText = summary;
}
This script gets the values of the budget, income, and expenses from the HTML form, converts them to numbers, calculates the remaining budget, generates a summary string, and updates the Summary paragraph with the generated summary.
Step 3: Running the code
Make sure the HTML and JS files are in the same directory. Run the HTML file in any web browser and your JavaScript-based tool for personal budgeting and finance tracking is ready to go.
Note: This is a simple example. In a full application, you would want to store previous inputs so that the user can see their budgeting and spending over time and have better error checking and UI.
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