💎 <%= EJS %> 💎

"E" is for "effective." EJS is a simple Templating Language that lets you generate HTML markup with plain JavaScript. 🔥

No religiousness about how to organize things. No reinvention of iteration and control-flow. It's just plain JavaScript. 🤷🏻‍♂️

[ Website ] : http://ejs.co/

https://t.me/pgimg/8
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#ejs #templating #js #node #express
@ProgrammingTip

Writing middleware for use in Express.js apps 🔥

Overview 🔎
Middleware functions are functions that have access to the request object (req), the response object (res), and the next function in the application’s request-response cycle.

The next function is a function in the Express router which, when invoked, executes the middleware succeeding the current middleware. ⏭

Middleware can perform 💎
• Execute any code.
• Make changes to the request and the response objects.
• End the request-response cycle.
• Call the next middleware in the stack.

🔸🔹🔸🔹

Configurable middleware 📥
If you need your middleware to be configurable, export a function which accepts an options object or other parameters, which, then returns the middleware implementation based on the input parameters.

in my-middleware.js

module.exports = function(options) {
  return function(req, res, next) {
    // Implement the middleware function 
    next();
  }
}

🔸🔹🔸🔹

Usage Middleware 📤
The middleware can now be used as shown below.

const mddleware = require('./my-middleware.js')
app.use(mddleware({ option1: '1', option2: '2' }))

https://t.me/pgimg/77

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#JavaScript #Express #Middleware
@ProgrammingTip