nodejs web screenshot

How to take a screenshot of a web page using Node JS (Puppeteer + Chrome)

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Let’s get started with the procedure to take a screenshot of a web page using NodeJs.Following is the step by step and easy process which will make our work smooth with the help of Puppeteer,  a Node JS web scrapping library. Puppeteer uses headless chrome browser for the scrapping process Which is one of its advantages. 1.Install […]

ssl installation on aws ec2

Easy way to install SSl on AWS EC2

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As we know that SSL stands for Secure Socket Layers and is a public key infrastructure that uses the RSA method of encryption and authentication via security certificates. It helps to establish a secure connection between the client and the server through the secure protocol HTTPS. It is a perfect choice for protecting sensitive information, […]

csr file creation in apache

Generate CSR (Certificate Signing Request) file in Apache

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CSR file creation in Apache is a simple process. CSR (Certificate Signing Request) file contains a block of encoded text, which is given by the applicant to a certificate authority when applying for an SSL certificate. It is usually generated on the server where the certificate will be installed. It contains information that will be included […]

website to chrome extension

How to convert any website into a google chrome extension

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Creating a Chrome extension or converting your favorite website into a google chrome extension is a simple process. It is going to be fun, let’s get started. Following are the steps which will guide us to get our work done. Creating manifest.json Website to Chrome Extension Script Loading extension in Chrome   Creating manifest.json First of all, we […]


Free SSL Certificate Creation

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SSL certification is one of the common security feature of any web site. There are many certificate providers are available in the market, mostly all are paid service providers. But Certbot is one of the SSL certificate provider for free of cost. The following are the steps to create the free SSL certificate using cerbot […]

AnjularJs form errors

How to show form errors on submit in Angularjs

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Following is the sample code for showing all form errors. It will be very useful for the developers when they are unable to track the errors. <table> <tr ng-repeat=”(key, errors) in form.$error track by $index”> <td><strong>{{ key }}</strong> errors <ul> <li ng-repeat=”err in errors”>{{ err.$name }} has an error: <strong>{{ key }}</strong>.</li> </ul> </td> </tr> </table>

AnjularJs ngPattern

Angularjs form validation with ngPattern

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ngPattern is one of the useful things for validation in AnjularJs. AnjularJs ngPattern adds pattern to ngmodel. It is mainly used in text-based form controls. The following are some of the sample patterns: Email <input type=”text” ng-model=”mail” name=”mail” ng-pattern=”/^([\w-]+(?:\.[\w-]+)*)@((?:[\w-]+\.)*\w[\w-]{0,66})\.([a-z]{2,6}(?:\.[a-z]{2})?)$/i” >   Phone <input type=”text” ng-model=”mobile” name=”mobile” ng-pattern=”/^(\+\91{1,2}[- ])\d{10}$/” />   Landline Phone <input type=”text” ng-model=”landLine” […]

Nodejs REPL

How to use the Node.js REPL (Read-Eval-Print Loop)

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REPL is one of the Nodejs features. It is an interactive program environment. REPL stands for Read, Eval, Print, Loop.REPL help us to do simple arithmetic calculations. In a REPL environment, a user can enter one or more expressions, which are evaluated and the result is displayed. The following are the components of REPL Read – […]

Laravel Installation

How to install laravel in ubuntu

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Laravel is one of the popular PHP frameworks now. There are many ways to install the laravel framework. But we will be discussing two of them, which are very easy and are widely used. Laravel Installer Composer Before starting the laravel setup process, make sure that your server meets the following requirements. PHP >= 5.6.4 OpenSSL […]

Laravel Maintenance Mode

Laravel Maintenance Mode

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Laravel provides maintenance mode. If you enable Laravel Maintenance Mode, It will show a custom view to all your application requests. If you are updating your site or you want to put your application under maintenance means you can able to use this option.   Following is command to enable this mode php artisan down […]

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