upload files using web uploader

1983shiv · Jul 18, 2020 · 1af31b3 · 1af31b3
1 parent ebe91bf
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diff --git a/app.js b/app.js
@@ -0,0 +1,80 @@
+// Listen for submit
+document.getElementById('loan-form').addEventListener('submit', function(e){
+  // Hide results
+  document.getElementById('results').style.display = 'none';
+
+  // Show loader
+  document.getElementById('loading').style.display = 'block';
+
+  setTimeout(calculateResults, 2000);
+
+  e.preventDefault();
+});
+
+// Calculate Results
+function calculateResults(){
+  console.log('Calculating...');
+  // UI Vars
+  const amount = document.getElementById('amount');
+  const interest = document.getElementById('interest');
+  const years = document.getElementById('years');
+  const monthlyPayment = document.getElementById('monthly-payment');
+  const totalPayment = document.getElementById('total-payment');
+  const totalInterest = document.getElementById('total-interest');
+
+  const principal = parseFloat(amount.value);
+  const calculatedInterest = parseFloat(interest.value) / 100 / 12;
+  const calculatedPayments = parseFloat(years.value) * 12;
+
+  // Compute monthly payment
+  const x = Math.pow(1 + calculatedInterest, calculatedPayments);
+  const monthly = (principal*x*calculatedInterest)/(x-1);
+
+  if(isFinite(monthly)) {
+    monthlyPayment.value = monthly.toFixed(2);
+    totalPayment.value = (monthly * calculatedPayments).toFixed(2);
+    totalInterest.value = ((monthly * calculatedPayments)-principal).toFixed(2);
+
+    // Show results
+    document.getElementById('results').style.display = 'block';
+
+    // Hide loader
+    document.getElementById('loading').style.display = 'none';
+
+  } else {
+    showError('Please check your numbers');
+  }
+}
+
+// Show Error
+function showError(error){
+  // Hide results
+  document.getElementById('results').style.display = 'none';
+
+  // Hide loader
+  document.getElementById('loading').style.display = 'none';
+
+  // Create a div
+  const errorDiv = document.createElement('div');
+
+  // Get elements
+  const card = document.querySelector('.card');
+  const heading = document.querySelector('.heading');
+
+  // Add class
+  errorDiv.className = 'alert alert-danger';
+
+  // Create text node and append to div
+  errorDiv.appendChild(document.createTextNode(error));
+
+  // Insert error above heading
+  card.insertBefore(errorDiv, heading);
+
+  // Clear error after 3 seconds
+  setTimeout(clearError, 3000);
+}
+
+// Clear error
+function clearError(){
+  document.querySelector('.alert').remove();
+}
diff --git a/img/loading.gif b/img/loading.gif
diff --git a/index.html b/index.html
@@ -0,0 +1,83 @@
+<!doctype html>
+<html lang="en">
+  <head>
+    <title>Hello, world!</title>
+    <!-- Required meta tags -->
+    <meta charset="utf-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
+
+    <!-- Bootstrap CSS -->
+    <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-beta.2/css/bootstrap.min.css" integrity="sha384-PsH8R72JQ3SOdhVi3uxftmaW6Vc51MKb0q5P2rRUpPvrszuE4W1povHYgTpBfshb" crossorigin="anonymous">
+    <style>
+      #loading, #results {
+        display:none;
+      }
+    </style>
+  </head>
+  <body class="bg-dark">
+    <div class="container">
+      <div class="row">
+        <div class="col-md-6 mx-auto">
+          <div class="card card-body text-center mt-5">
+            <h1 class="heading display-5 pb-3">Loan Calculator</h1>
+            <form id="loan-form">
+              <div class="form-group">
+                <div class="input-group">
+                  <span class="input-group-addon">$</span>
+                  <input type="number" class="form-control" id="amount" placeholder="Loan Amount">
+                </div>
+              </div>
+              <div class="form-group">
+                <div class="input-group">
+                  <span class="input-group-addon">%</span>
+                  <input type="number" class="form-control" id="interest" placeholder="Interest">
+                </div>
+              </div>
+              <div class="form-group">
+                <input type="number" class="form-control" id="years" placeholder="Years To Repay">
+              </div>
+              <div class="forn-group">
+                <input type="submit" value="Calculate" class="btn btn-dark btn-block">
+              </div>
+            </form>
+            <!-- LOADER -->
+            <div id="loading">
+              <img src="img/loading.gif" alt="">
+            </div>
+            <!-- RESULTS -->
+            <div id="results" class="pt-4">
+              <h5>Results</h5>
+              <div class="form-group">
+                <div class="input-group">
+                  <span class="input-group-addon">Monthly Payment</span>
+                  <input type="number" class="form-control" id="monthly-payment" disabled>
+                </div>
+              </div>
+
+              <div class="form-group">
+                <div class="input-group">
+                  <span class="input-group-addon">Total Payment</span>
+                  <input type="number" class="form-control" id="total-payment" disabled>
+                </div>
+              </div>
+
+              <div class="form-group">
+                <div class="input-group">
+                  <span class="input-group-addon">Total Interest</span>
+                  <input type="number" class="form-control" id="total-interest" disabled>
+                </div>
+              </div>
+            </div>
+          </div>
+        </div>
+      </div>
+    </div>
+
+    <!-- Optional JavaScript -->
+    <!-- jQuery first, then Popper.js, then Bootstrap JS -->
+    <script src="https://code.jquery.com/jquery-3.2.1.slim.min.js" integrity="sha384-KJ3o2DKtIkvYIK3UENzmM7KCkRr/rE9/Qpg6aAZGJwFDMVNA/GpGFF93hXpG5KkN" crossorigin="anonymous"></script>
+    <script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.12.3/umd/popper.min.js" integrity="sha384-vFJXuSJphROIrBnz7yo7oB41mKfc8JzQZiCq4NCceLEaO4IHwicKwpJf9c9IpFgh" crossorigin="anonymous"></script>
+    <script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-beta.2/js/bootstrap.min.js" integrity="sha384-alpBpkh1PFOepccYVYDB4do5UnbKysX5WZXm3XxPqe5iKTfUKjNkCk9SaVuEZflJ" crossorigin="anonymous"></script>
+    <script src="app.js"></script>
+  </body>
+</html>