2024 में शुरुआत करने वालों के लिए Express js की ट्यूटोरियल, पेजिनेशन #nodejstutorial #expressjs

Posted by

Alfalfa

–

July 11, 2024

Namaste dosto! Aaj ke is tutorial me hum baat karenge Express js ke bare me, jo ek popular web application framework hai Node.js ke liye. Hum specifically Pagination ke bare me discuss karenge, jise hum apne web applications me use kar sakte hain.

Pagination ka use karke hum apne web pages ko divide kar sakte hain multiple pages me, jisse user ko data access karne me aasani hoti hai. Chaliye shuru karte hain!

Step 1: Express js Install kare
Sabse pehle, aapko apne system me Node.js install karni hogi. Uske baad aap Express js ko install kar sakte hain using npm command. Yeh hai command:

npm install express

Step 2: Express js App Create kare
Ab aapko ek new Express js app create karna hoga. Yeh hai basic code:

<!DOCTYPE html>
<html>
<head>
  <title>Express js Tutorial</title>
</head>
<body>
  <h1>Express js Tutorial for Beginners</h1>
</body>
</html>

Step 3: Pagination ka Use kare
Ab hum Pagination ka use karenge. Iske liye hum pehle Express js app me routes define karenge, jise hum paginate kar sakte hain. Yeh hai example code:

app.get('/posts', (req, res) => {
  const page = req.query.page || 1;
  const pageSize = 10;
  const startIndex = (page - 1) * pageSize;
  const endIndex = page * pageSize;
  const paginatedPosts = posts.slice(startIndex, endIndex);
  res.json(paginatedPosts);
});

Step 4: Pagination Buttons Add kare
Ab hum apne HTML page me pagination buttons add karenge, jise user page navigate kar sake. Yeh hai code:

<div>
  <button><a href="/posts?page=1">1</a></button>
  <button><a href="/posts?page=2">2</a></button>
  <!-- Add more buttons as needed -->
</div>

Step 5: Paginated Data Display kare
Ab aapko apne HTML page me paginated data display karna hai. Yeh hai code:

<ul>
  <% for(var i=0; i<posts.length; i++) { %>
    <li><%= posts[i].title %></li>
  <% } %>
</ul>

Toh dosto, yeh thi Express js ke basic Pagination tutorial Hindi me. Mujhe ummeed hai ki aapko samajh me aaya hoga. Agar aapko koi sawal hai, toh niche comment kare. Dhanyavad! #nodejstutorial #expressjs