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Popular JavaScript templating libraries are AngularJS, Backbone.js, Ember.js, Handlebars.js, JSX (used by React), Vue.js and Mustache.js. A frequent practice is to use double curly brackets (i.e. {{key}}) to call values of the given key from data files, often JSON objects.
JavaScript-based web application frameworks, such as React and Vue, provide extensive capabilities but come with associated trade-offs. These frameworks often extend or enhance features available through native web technologies, such as routing, component-based development, and state management.
The init function is called when the binding has been applied to an element, perfect for onetime initialization. Whenever the bound observable changes, an update function is called that allows you to react to changing data. Here’s a simple example of a custom binding handler that applies a jQuery UI datepicker to an input element:
Certain jQuery object methods retrieve specific values (instead of modifying a state). An example of this is the val() method, which returns the current value of a text input element. In these cases, a statement such as $('#user-email').val() cannot be used for chaining as the return value does not reference a jQuery object.
React Native, which enables native Android, iOS, and UWP development with React, was announced at Facebook's React Conf in February 2015 and open-sourced in March 2015. On April 18, 2017, Facebook announced React Fiber, a new set of internal algorithms for rendering, as opposed to React's old rendering algorithm, Stack. [ 52 ]
There are numerous community efforts for the Web Components ecosystem. WebComponents.org [10] provides an interface to search for any existing Web Components, Custom Elements Everywhere [11] validates whether popular front-end frameworks are compatible and ready to use Web Components standard, with a set of pending bugs and available workarounds.
Earlier versions of Dojo had a reputation for being bulky and slow to load. [13] It also required extra work to load Dojo across domains, e.g., from a CDN.Addressing these problems was the major goal of Dojo 1.7, which introduced asynchronous module definition (AMD) and a "nano" loader.
React is a JavaScript library for building user interfaces. It is maintained by Facebook, Instagram and a community of individual developers and corporations. React uses a syntax extension for JavaScript, named JSX, which is a mix of JS and HTML (a subset of HTML).