As you have been writing css for several years day by day you are getting new things that you have never used previously. Each and every well trained front-end developer feature-tests before using any features which a browser may not have. This feature testing has always done with scripting, and most of the people use […]
Using a single object called dependency tracker i.e. ko.dependencyDetection you can determine when the value get updated. When you declare a computed observable, KO immediately gets its initial value and updated computed observable. Lets see an example for Dependency Tracking: <!DOCTYPE html> <html> <head> <title>Dependency Tracking – KnockoutJS</title> <script src=”http://ajax.aspnetcdn.com/ajax/knockout/knockout-3.1.0.js” type=”text/javascript”></script> </head> <body> <div> <form […]
To connect data to UI declarative bindings are used. As bindings and Observables both are different, using normal javascript object you can bind view. Declarative Bindings consists of two values i.e. name and value: Full name: <input data-bind=”value: fullName, valueUpdate: ‘afterkeydown’” /> Here when each key is pressed value will be updated.
Components are way of organizing the UI code for structure wise and promote code re-usability for a large application. Components can be registered using the ko.components.register() API. ko.components.register(‘componentname’, { viewModel: {…}, template: {….) }); <!DOCTYPE html> <head> <title>Components of KnockoutJS</title> <script src=”https://cdnjs.cloudflare.com/ajax/libs/knockout/3.2.0/knockout-min.js”></script> </head> <body> <h4>Example 1: without parameters</h4> <div data-bind=’component: “example-editor”‘></div> <h4>Example 2: passing parameters</h4> […]
Now a days everyone use a single page application i.e. all necessary information are gathered into a single page and KnockoutJS is no exception of this which uses MVVM Application Framework. This is a client side framework which very easily bind html to domain data with MVVM pattern. MVVM is an architectural design pattern for […]
In this tutorial you will get the basic knowledge of KnockoutJS and how to use on programming. Basically it is a JavaScript library based on MVVM pattern i.e. Model-View-View-Model by which developer build rich and responsive websites. It separates the application model, view and view model. It supports most of browsers i.e. Firefox 3.5+, IE […]
Image sprite is nothing but a collection of images put into a single image. When web page loads then for a particular location we show particular position of a image. For multiple images it takes time to load on a server. That is why we use single image for multiple position to save bandwidth. In […]
Using AngularJS Forms you can collect number of inputs. Form can also validate input data. For any type of invalid input it can throw error for notify user. But note to remember that this is just a client side validation. You need to validate from server side also. Here is a sample code for AngularJS […]
Using javaScript you can get the URL parameter also. Using Array.prototype.slice.call you will get the all parameters that is append in URL string. Example of URL parameter: var args = Array.prototype.slice.call(arguments); You can get the value using: arg[0], arg[1] etc.
In this article you will learn about few jQuery tips and tricks of interesting. Until you practice, you will not be able to be master of jQuery. jQuery tips: To check if checkbox is checked: if ($(“#checkID”).is(‘:checked’)) { … } or if ($(‘#checkID’).attr(‘checked’)) { … } Check whether an element exists or not: if ($(“#myDIV”).length) […]