Crowdfunding App using React

In this article, we will create a Crowdfunding App using React. The React crowdfunding app features multiple projects, each with a set fundraising goal. Users can contribute by entering donation amounts, and the app dynamically tracks progress toward each goal.

Preview of final output: Let us have a look at how the final output will look like:

Final Preview

Prerequisites:

• React JS
• CSS
• JSX
• UseState Hook

Approach to create Crowdfunding App using React:

Here, a step-by-step approach for creating the Crowdfunding App project using React with a congratulatory message when the goal is reached:

• Set up a React app with multiple crowdfunding projects, each having a predefined fundraising goal.
• Users can contribute funds by entering donation amounts through a user-friendly interface.
• Dynamically track the progress of each project’s fundraising goal based on user contributions.
• Implement validation checks to ensure users enter valid donation amounts.
• When a project’s fundraising goal is met or exceeded, prompt the user for a valid goal amount.
• Display a congratulatory message when a project successfully reaches its fundraising target.

Steps to Create the React App:

Step 1: Create a new React project using Create React App.

npx create-react-app << Project Name >>

Step 2: Navigate to the project folder using

 cd << Project Name >>

Step 3: Create a folder “components” in src file and add three new folders in it and name them as DonationForm, Project and Footer.

Project Structure:

Project Structure

The updated dependencies in package.json file will look like:

"dependencies": {
    "react": "^18.2.0",
    "react-dom": "^18.2.0",
    "react-scripts": "5.0.1",
    "web-vitals": "^2.1.4"
},

Example: Below is the code for the Crowdfunding App using React

Javascript

// App.js
import React from 'react';
import Project from './components/Project';
import './App.css';
import Footer from './components/Footer'

const App = () => {
    return (
        <>
            <h1>GeeksForGeeks</h1>
            <div className='project-container'>
                <h1>CrowdFunding</h1>
                <div className="project-list">
                    <Project goal={1000} projectNumber={1} />
                    <Project goal={500} projectNumber={2} />
                    <Project goal={2000} projectNumber={3} />
                    <Project goal={1500} projectNumber={4} />
                </div>
            </div>
            <Footer />
        </>
    );
};

export default App;

Javascript

// DonationForm.js

import React, { useState } from 'react';

const DonationForm = (
    {
        onDonate, goal,
        amountRaised
    }) => {
    const [donationAmount, setDonationAmount] = useState("");
    const [goalReached, setGoalReached] = useState(false);

    const handleDonate = () => {
        if (donationAmount <= 0) {
            alert('Please enter a valid donation amount.');
        } else {
            onDonate(donationAmount);
            setDonationAmount("");
        }
    };
    const remainingAmount = goal - amountRaised;
    if (remainingAmount <= 0 && !goalReached) {
        setGoalReached(true);
    }

    return (
        <div className="form-section">
            {goalReached ? (
                <div className="goal-reached">
                    <h2>Congratulations! Goal Reached!</h2>
                    <p>Thank You for the Support</p>
                </div>
            ) : (
                <div>
                    <input
                        type="number"
                        placeholder='Enter Amount here'
                        value={donationAmount}
                        onChange={
                            (e) =>
                                setDonationAmount(parseInt(e.target.value, 10))
                        } />
                    <button onClick={handleDonate}>
                        Donate
                    </button>
                    {amountRaised >= goal && <p>
                        Congratulations! Goal achieved.
                    </p>
                    }
                    {amountRaised < goal && (
                        <p>Remaining amount needed:
                            ${remainingAmount}</p>
                    )}
                </div>
            )}
        </div>
    );
};

export default DonationForm;

Javascript

// Project.js

import React, { useState } from 'react';
import DonationForm from './DonationForm';
import '../App.css';

const Project = ({ goal, projectNumber }) => {
    const [amountRaised, setAmountRaised] = useState(0);

    const handleDonation = (donationAmount) => {
        const newAmount = amountRaised + donationAmount;

        if (amountRaised + donationAmount > goal) {
            alert(`Thank you for contributing,
                but we need Remaining Amount.`);
            return;
        }

        if (newAmount > goal) {
            alert('Congratulations! Goal achieved.');
            // You can add additional logic here (e.g., closing donations).
        } else {
            setAmountRaised(newAmount);
        }
    };

    return (
        <div className="project">
            <div className="project-number">Project {projectNumber}</div>
            <h2>Project Goal: ${goal}</h2>
            <p>Amount Raised: ${amountRaised}</p>
            <DonationForm onDonate={handleDonation}
                goal={goal} amountRaised={amountRaised} />
        </div>
    );
};

export default Project;

Javascript

// footer.jsx

import React from 'react'
import './Footer.css';

function footer() {
  return (
    <div className='footer'>
        <h2> © 2024 CrwodFunding. All rights reserved.</h2>
        </div>
  )
}

export default footer

CSS

/* App.css */
body {
    font-family: 'Arial', sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f0f0f0;
    text-align: center;
}

h1 {
    color: green;
    font-size: 40px;
    text-align: center;
    padding: 10px 10px;
}

.project-container {
    max-width: 85%;
    height: auto;
    margin: 0px auto;
    padding: 10px;
    background-color: #fff;
    border-radius: 8px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
    border: 3px solid green;
    box-shadow: 5px 5px 5px 0px rgb(6, 161, 19);

}

.project-list {
    display: grid;
    justify-content: space-between;
    align-items: center;
    grid-template-columns: repeat(2, 1fr);
    margin: 0px 10px;
    height: fit-content;
}

.project-container h1 {
    border: 2px solid red;
    color: rgb(39, 10, 105);
    margin: 10px 20px;
    border-radius: 10px;
    background-color: rgb(228, 236, 182);

}

.project {
    height: 90%;
    margin: 5px 15px;
    padding: 15px;
    border: 2px solid rgb(0, 26, 255);
    box-shadow: 0px 0px 5px 2px blue;
    border-radius: 8px;
    background-color: #f8f8f8;
}

.project:hover {
    border: 2px solid rgb(196, 8, 96);
    transform: scale(1.05);
    box-shadow: 0px 0px 5px 2px rgb(255, 0, 234);
}

.project-number {
    font-size: 30px;
    font-weight: 900;
    color: rgb(236, 32, 5);
    margin-bottom: 10px;
}

.project h2 {
    color: rgb(160, 35, 154);
    font-size: 25px;
}

.project p {
    color: rgb(255, 8, 132);
    font-size: 23px;
    font-family: 800;
}

.form-sect {
    margin: 0px;
}

input {
    height: 25px;
    width: 60%;
    border: 2px solid;
    border-radius: 5px;
    font-size: 15px;
    font-weight: 900;
    margin-right: 10px;
    padding-left: 10px;
}

button {
    border: 2px solid rgb(5, 57, 199);
    border-radius: 5px;
    height: 30px;
    font-size: large;
    padding: 3px 10px;
    font-weight: 800;
    background-color: rgba(10, 202, 202, 0.705);
}

button:hover {
    background-color: rgb(4, 253, 241);
    box-shadow: 3px 3px 2px 0px rgb(6, 156, 243);
}

.goal-reached h2 {
    color: rgb(179, 42, 18);
}

.goal-reached p {
    color: rgb(179, 42, 18);
    font-size: 25px;
    font-weight: 900;
}

/* ================== Media Query(Small Devices) ============== */

@media screen and (max-width: 650px) {

    .project-list {

        grid-template-columns: repeat(1, 1fr);
        height: fit-content;
    }

    input {
        margin-bottom: 5px;
    }

}

CSS

/* footer.css */

.footer {
    width: 100%;
    background-color: rgb(15, 14, 14);
    text-align: center;
    padding: 10px 0;
    display: flex;
    align-items: center;
    justify-content: center;
    bottom: 0;
    margin-top: 30px;
}

h2 {
    color: white;
}

Output:

Output