Javascript - Web development basic Series: Building a Compound Interest Calculator
In this video, we'll build a real-world application that uses JavaScript to calculate compound interest, and you'll see the code come together line by line.
Code walkthrough (javascript):
‹// This variable will store the principal amount›
‹let principal = 1000;›
‹// This variable will store the annual interest rate›
‹let rate = 0.05;›
‹// This function will calculate the compound interest›
‹function compoundInterest(principal, rate, time) {›
‹// Calculate the future value using the formula A = P(1 + r)^t›
‹let futureValue = principal * Math.pow((1 + rate), time);›
‹} // End of function definition›
‹// Prompt user to input values for the interest period and compounding frequency›
‹let time = parseInt(prompt('Enter the number of years: '));›
‹let periods = prompt('Enter the compounding frequency (e.g., 12 for monthly): ');›
What it looks like: 💸 Incorrect Compound Interest Calculation ⚠️ → 💸 Accurate Compound Interest Calculation ✅
Try it yourself: Implement a user interface to input principal, rate, and time.
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