Sometimes we need to add demo text in a website for checking whether it working fine or somewhere we test website with demo text. So on this case unwanted text inserted into database and you need to remove it. So, we can update fields with random sentence in this case. For example the fields value […]
Using template is very easy to incorporate into website. For a duplication you don’t need to write over and over again just call them repetitively. Parameters: Following properties can be sent as a parameter-value: name, nodes, data, if, foreach, as, afterAdd, afterRender, beforeRemove. Lets see an example of Templating: <!DOCTYPE html> <head> <title>KnockoutJS – Templating</title> […]
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> […]
3 concepts in which KnockoutJS is build upon is: – Through observables dom elements and ViewModel exchange information – Bindings between UI and ViewModel – Templating web applications To make it observable declare as: this.property = ko.observable(‘value’); Let’s try below Observables example: <!DOCTYPE html> <head> <title>KnockoutJS – Observables</title> <script type=”text/javascript” src=”http://ajax.aspnetcdn.com/ajax/knockout/knockout-3.1.0.js”></script> </head> <body> <!– This […]
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 […]
For making money, online jobs are becoming very popular and easy to maintain around the world. Million of users are using online jobs for making extra income for part time from home. Online Jobs are becoming very popular in India & all over the world for earning Money online from home without any investment. Now […]
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 […]