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Express.js – app.enable() Method

Express JS Server Side Programming Programming

Mayank Agarwal

Updated on 30-Sep-2021 649 Views

The app.enable() function sets the Boolean setting ‘name’ to ‘true’, where name defines one of the properties from the app settings table. Using the app.set('foo', true) for a Boolean property is same as calling the app.enable('foo') function.Syntaxapp.enable(name)Example 1Create a file with the name "appEnable.js" and copy the following code snippet. After creating the file, use the command "node appEnable.js" to run this code.// app.enable() Method Demo Example // Importing the express module const express = require('express'); // Initializing the express and port number var app = express(); // Initializing the router from express var router = express.Router(); ...

Express.js – app.disable() Method

Express JS Server Side Programming Programming

Mayank Agarwal

Updated on 30-Sep-2021 836 Views

The app.disable() method disables the setting name passed in the function. This method sets the setting name to False. We can perform the same function by using the app.set() method too, by passing its value as False.Syntaxapp.disable(name)Example 1Create a file with the name "appDisable.js" and copy the following code snippet. After creating the file, use the command "node appDisable.js" to run this code.// app.disable() Method Demo Example // Importing the express module const express = require('express'); // Initializing the express and port number var app = express(); // Initializing the router from express var router = express.Router(); ...

Express.js – app.delete() Method

Express JS Server Side Programming Programming

Mayank Agarwal

Updated on 30-Sep-2021 7K+ Views

The app.delete() method routes all the HTTP DELETE requests to the specified path with the specified callback functions.Syntaxapp.delete(path, callback, [callback])Parameterspath − This is the path for which the middleware function is invoked. A path can be a string, path pattern, a regular expression, or an array of all these.callback − These are the middleware functions or a series of middleware functions that act like a middleware except that these callbacks can invoke next (route).Example 1Create a file "appDelete.js" and copy the following code snippet. After creating the file, use the command "node appDelete.js" to run this code.// app.delete() Method Demo ...

Express.js – app.all() Method

Express JS Server Side Programming Programming

Mayank Agarwal

Updated on 30-Sep-2021 3K+ Views

The app.all() method can be used for all types of routings of a HTTP request, i.e., for POST, GET, PUT, DELETE, etc., requests that are made to any specific route. It can map app types of requests with the only condition that the route should match.Syntaxapp.path(path, callback, [callback])Parameterspath − This is the path for which the middleware function is invoked. A path can be a string, path pattern, a regular expression or an array of all these.callback − These are the middleware functions or a series of middleware functions that act like a middleware except that these callbacks can invoke ...