In JavaScript, you can use following two ways to get hidden field value in a form : document.getElementById(‘hidden field id’).value document.formName.elements[‘hidden field name’].value See an example here… function printIt(){ ...

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Pass value from JSP to Javascript

What is the Singleton design pattern?   The Singleton design pattern is a creational pattern that states that one and only one instance of a class would persist in the memory during the application's life cycle. In other words, this design patte...

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Implementing the Singleton Design Pattern in JavaScript

  A workaround for ng-change in angular js which does not catch file input change event.   view.html: <input type="file" custom-on-change="uploadFile"> controller.js: app.controller('myCtrl', function($scope){ $scope.uploadFile = func...

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File change event using custom angular directive

JavaScript is the official language of all modern web browsers. As such, JavaScript questions come up in all sorts of developer interviews. This article isn’t about the newest JavaScript libraries, common development practices, or any of the new ...

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3 JavaScript questions for coding interviews

Here’s the list of the top 10 best ES6 features for a busy software engineer (in no particular order): Default Parameters in ES6 Template Literals in ES6 Multi-line Strings in ES6 Destructuring Assignment in ES6 Enhanced Object Literals in ...

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MUST READ: Top 10 ES6 Features

The solution doesn’t require writing a specific directive or adding any additional attributes or decoration to my page content -  a short timeout (like, 1ms short) inside of which Prism.highlightElement(elem) is called. // Content is my service, ...

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Using PrismJs syntax highlighting with AngularJs

JavaScript can be a nightmare to debug: Some errors it gives can be very difficult to understand at first, and the line numbers given aren’t always helpful either. Wouldn’t it be useful to have a list where you could look to find out what they m...

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Common JavaScript Errors and How to Fix Them

The solution is to keep count of the number of times the function is called to execute AJAX request and on failed requests recall the function. The retryLimit can be modified to the number to times the AJAX function is called. function callback()...

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Retry failed AJAX request

To run server.js, the socket.io file Install nodejs globally. install npm globally go to your project folder and install npm modules npm install connect npm install socket.io Make sure the port your're using is open in the iptables, if not...

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Configuring Socket IO on server