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<!DOCTYPE html>
<html lang="en">
<head>
<!-- Google tag (gtag.js) -->
<script async src="https://www.googletagmanager.com/gtag/js?id=G-D0ENCWPZL9"></script>
<script>
window.dataLayer = window.dataLayer || [];
function gtag(){dataLayer.push(arguments);}
gtag('js', new Date());
gtag('config', 'G-D0ENCWPZL9');
</script>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1" />
<title>12. HTML APIs Introduction</title>
<style>
* { margin: 0; padding: 0; box-sizing: border-box; }
body {
font-family: 'Segoe UI', sans-serif;
background: #1cc9be;
padding: 30px;
}
.container {
background: rgba(255,255,255,0.3);
padding: 25px;
border-radius: 15px;
max-width: 1000px;
margin: auto;
box-shadow: 0 8px 20px rgba(0,0,0,0.2);
}
h2, h3 {
color: #180;
margin-bottom: 15px;
}
p {
font-size: 17px;
margin-bottom: 12px;
line-height: 1.5;
}
ul {
margin: 10px 0 20px 20px;
}
textarea, iframe {
width: 100%;
height: 200px;
font-size: 16px;
padding: 10px;
margin: 10px 0 20px;
border-radius: 10px;
border: 2px solid white;
background: rgba(255,248,240,0.4);
font-family: monospace;
}
button {
background: #007bff;
color: white;
border: none;
padding: 10px 20px;
font-size: 15px;
font-weight: 500;
border-radius: 8px;
cursor: pointer;
margin-bottom: 25px;
transition: all 0.3s ease-in-out;
}
button:hover {
box-shadow: 0 5px 12px rgba(0,0,0,0.2);
transform: translateY(-2px);
}
</style>
</head>
<body>
<div class="container">
<h2>12. HTML APIs Introduction</h2>
<!-- Geolocation API -->
<h3>I. Geolocation API</h3>
<p>Geolocation API se hum user ka location (latitude & longitude) browser se access kar sakte hain.</p>
<textarea id="code1">
<button onclick="getLocation()">Get My Location</button>
<p id="geo"></p>
<script>
function getLocation() {
if (navigator.geolocation) {
navigator.geolocation.getCurrentPosition(showPosition);
} else {
document.getElementById("geo").innerText = "Geolocation not supported.";
}
}
function showPosition(position) {
document.getElementById("geo").innerText =
"Latitude: " + position.coords.latitude +
", Longitude: " + position.coords.longitude;
}
</script>
</textarea>
<button onclick="runCode('code1', 'output1')">Run Code</button>
<iframe id="output1"></iframe>
<!-- Drag and Drop API -->
<h3>II. Drag and Drop</h3>
<p>Drag and Drop API se hum kisi element ko mouse se uthakar dusri jagah le ja sakte hain.</p>
<textarea id="code2">
<div id="drag1" draggable="true" ondragstart="drag(event)"
style="width:100px;height:100px;background:#f90;border-radius:8px;text-align:center;line-height:100px;">
Drag me
</div>
<div id="dropzone" ondrop="drop(event)" ondragover="allowDrop(event)"
style="width:200px;height:100px;border:2px dashed #007bff;margin-top:20px;text-align:center;line-height:100px;">
Drop here
</div>
<script>
function allowDrop(ev) {
ev.preventDefault();
}
function drag(ev) {
ev.dataTransfer.setData("text", ev.target.id);
}
function drop(ev) {
ev.preventDefault();
var data = ev.dataTransfer.getData("text");
ev.target.appendChild(document.getElementById(data));
}
</script>
</textarea>
<button onclick="runCode('code2', 'output2')">Run Code</button>
<iframe id="output2"></iframe>
<!-- Web Storage -->
<h3>III. Web Storage (localStorage)</h3>
<p>Web Storage API se hum browser mein data store kar sakte hain without server interaction. <code>localStorage</code> data ko save rakhta hai browser close hone ke baad bhi.</p>
<textarea id="code3">
<input type="text" id="nameInput" placeholder="Enter your name">
<button onclick="saveName()">Save</button>
<p id="savedName"></p>
<script>
function saveName() {
const name = document.getElementById("nameInput").value;
localStorage.setItem("userName", name);
showName();
}
function showName() {
const name = localStorage.getItem("userName");
if (name) {
document.getElementById("savedName").innerText = "Saved Name: " + name;
}
}
showName();
</script>
</textarea>
<button onclick="runCode('code3', 'output3')">Run Code</button>
<iframe id="output3"></iframe>
</div>
<script>
function runCode(textareaId, iframeId) {
const code = document.getElementById(textareaId).value;
const iframe = document.getElementById(iframeId);
const doc = iframe.contentDocument || iframe.contentWindow.document;
doc.open();
doc.write(code);
doc.close();
}
</script>
</body>
</html>