Angular Scroll Directive

x In this post, we will discuss one of the major updates in Angular 7 version , its new Virtual scroll feature in CDK which is Material Component Development Kit. My last Google Maps demo made me think a lot about data binding and Angular. Since overflow:auto is not always. The AngularJS ng-include directive is used to fetch, compile and include an external HTML fragment. To make scrollable contents you will use Scrollable Areas. Responsive Image Carousel with Angular. AngularJS Custom Modal Directive. angular-scroll. Creating a custom directive and listening to custom event is easy with Angular Directive. Angular Grid is an Angular. They are: Parent scope – Whatever change you make in your directive that comes from the parent scope, will also reflect in the parent scope, and it is also a default scope. Now we can easily import our directive in Angular 8 project. Ionic provides a range of directives by default that you can drop into your application and get a pretty slick looking interface almost instantly. Ben Nadel demonstrates how to use the CSS property "overflow: hidden" to prevent scrolling on the Body element in an Angular 5. Angular is a popular framework for building cross-platform applications. For our directive, we want to tap into the ngAfterViewInit lifecycle hook to register our scroll events and process them. Angularjs Slim Scroll is a directive with angular closure compiler. It is used for UI rendering manipulation. Angular is a platform for building mobile and desktop web applications. Angular Tree is an AngularJS UI component that can sort nested lists, provides drag & drop support and doesn't depend on jQuery. Set textarea value in AngularJs – It is very simple to set the value attribute of the input field. You need to include the dependencies in your page:. Edit the code. Ask Question Asked 5 years, I have a directive for infinite-scroll where I listen for scroll event. We have built pull of examples covering a number of use-cases, showing various ways to use the ui-scroll. Angular 7 Drag and Drop example – Angular Material CDK The @angular/cdk/drag-drop module helps us drag single item or sort it within a horizontal/vertical list, transfer items between lists, show animations, previews, placeholders, custom drag handles. In this article, I continue to show further development for Echoes Player with Angular 2, this time - making it more dynamic by adding an infinite scroll directive, what is known in Angular 2 as an attribute directive. r/Angular2 exists to help spread news, discuss current developments and help solve problems. Code licensed under an MIT-style License. Help Angular by taking a 1 minute survey !. API calls and infinite scroll with AngularJS. Now we can easily import our directive in Angular 8 project. ngx-page-scroll. AngularJS Directive Design Made Easy AngularJS directives are cool. Code licensed under an MIT-style License. The AngularJS Cheat Sheet was a life saver for me. One thing you'll always have to deal with approaching mobile web app development is scroll and position:fixed bugs. These are just a core set of components that provide vanilla functionality,. < link rel = "stylesheet" href = "bower_components/slick-carousel/slick/slick. Filtering data in an `ng-repeat` is fairly easy since Angular also comes with the filter module. By continuing to use Pastebin, you agree to our use of cookies as described in the Cookies Policy. When using the shorthand syntax, Angular allows only one structural directive on an element. Read about all AngularJS directives in our AngularJS directive reference. To trigger the callback when the actual element is scrolled, these settings should be configured: [scrollWindow]="false". If user is at the bottom of the page give an option to navigate to top of the page by clicking an arrow or button. Infinite Scroll in Angular With Firebase Data Episode 37 Aug 7, 2017 written by Jeff Delaney When you have a large collection of information in your database, it's often not practical to query it in a single go. Ionic provides a lot of useful components right out of the box, but sometimes they might not do exactly what you want them to do. This is often useful when there are fixed positioned elements at the top of the page, such as navbars, headers etc. It provides a way to build apps for any deployment target by reusing existing code. Angular is a platform for building mobile and desktop web applications. As the user scrolls, the next list of dom elements visible to user is displayed. The iterator function in forEach is invoked for each item of array or object. , Videos of angular scroll to, Click to view on YouTube11:44Angular 7 Virtual Scroll - To Infinity and Beyond74K views · 10 months agoYouTube › Fireship, Click to view on YouTube10:11Learn. HTML enhanced for web apps. This course can be. I had research and found that a lot of jquery scroll plugin which can be use for scroll content with. QueryList implements an iterable interface, therefore, it can be used in Angular templates with the ngFor directive. yOffset can be specified in various ways:. Using Renderer2, we can create element, provide a text and then it can be appended with any existing element at run time on any event of an element. Edit the code. Join the community of millions of developers who build compelling user interfaces with Angular. Related links: Mark. Structural directives add or remove elements from the DOM. IntelliJ IDEA provides support for Angular and helps you on every step of the development process – from creating a new Angular app and working on the components to debugging and testing it. The *cdkVirtualFor structural directive replaces *ngFor inside of a , supporting the same API as *ngFor. Remember that whenever we need to manipulate DOM element, it's recommend that we do it in directive. But as the name of the directive implies we need a way of detecting if the user is hovering over the host element. Now we can easily import our directive in Angular 8 project. Components like alert boxes, modal popups, infinite scrolling, tabs, tags, progress bars and sliders. This is horrible user UX design. js and no top-level directive is available. How it works. js is a javascript library that merges pictures and QR codes for artistic QR codes. You can use out online editor to edit and run the code online. lazy-scroll is a angularjs directive for infinite scrolling. Ionic provides a range of directives by default that you can drop into your application and get a pretty slick looking interface almost instantly. js directive which allows you to perform any javascript actions (in the controller, or on the element) when an element is scrolled into, or out of, the users viewport, without any other dependencies. Is the scroll-animation function apart of angular (i. Dependency Injection. Scroll event handlers should execute as little code as possible and then use other means to catch those changes. They are: Parent scope – Whatever change you make in your directive that comes from the parent scope, will also reflect in the parent scope, and it is also a default scope. zip Download. js implemented only for a browser. AngularJS onScroll directive. 1) What is Angular 7? How is it different from AngularJS? Angular7 is the latest and recent version of Angular. UI component infrastructure and Material Design components for Angular web applications. As of version 2. Run this demo in my JavaScript Demos project on GitHub. Ignite UI for Angular 50+ Material-based UI components designed and built on Google’s Angular along the axis of scrolling. The idea of Angular filters is a simple one. In this article, I continue to show further development for Echoes Player with Angular (+2), this time - making it more dynamic by adding infinite scroll directive as what is known in angular2 as an attribute directive. An AngularJs directive that automatically scrolls to the bottom of an element on changes in its scope. bower install angular-ui-grid. For the tables with a huge amount of data you can use scroll functionality, as an alternative for the pagination. AngularJS is what HTML would have been, had it been designed for building web-apps. Type npm install –g @angular/cli in your command prompt, to install angular cli on your system. They are like markers on the Document Object Model(DOM) element that incorporates a special behavior to it. AngularJS tutorial for beginners - AngularJS is a JavaScript framework that operates on the client side and it is the most popular programming language in the market after python. There are several interview questions asked on Angular7 in AngularJs interviews. We can create a simple directive to achieve this. The *cdkVirtualFor structural directive replaces *ngFor inside of a , supporting the same API as *ngFor. It's applied to the element which set height or width attribute and the overflow is auto, but exclude body element. On click it will smoothly scroll you position back to top. Lets take a look at how these work, starting with a sample controller. AngularJS 'when-scrolled' directive is to implement infinite scrolling, which is supposed to detect the div scroll. How it works. In this article, we are comparing Angular 6 vs Angular 7 vs Angular 8 respectively, Angular 6 features like ng update, Angular Material + CDK components, CLI Workspaces while Angular 7 released with Drag & drop. Spread the word and download it now! TL;DR Angular 2 introduces a reinvented change detection system that drops. however the ScrollingModule provides a virtual version of *ngFor called *cdkVirtualFor and it is this magical directive that will help load and unload. A List of such Directives are shown Below. Virtual scrolling gives the impression of a very large list—by providing an appropriately sized scroll bar—and the ability to navigate the list without requiring the application to hold the entire list in memory or render it on the page. Angular is a popular framework for building cross-platform applications. Can an angular directive pass arguments to functions in expressions specified in the directive's attributes? Hot Network Questions How can religions without a hell discourage evil-doing?. PREREQUISITES. Angular 2 is an open source JavaScript framework to build web applications in HTML and JavaScript. However we can do it using anchorscroll in angularjs application. ngInfiniteScroll is a directive that you can use to implement infinite scrolling in your AngularJS applications. Join the community of millions of developers who build compelling user interfaces with Angular. Angular material and component dev kit (CDK): The angular 7 introduced major updates compared to previous versions along with the improvements in refresh, virtual scrolling, large lists of data, dynamic loading and unloading of parts of DOM. Is the scroll-animation function apart of angular (i. Making input elements have “auto-focus” capability can be a cumbersome process. js provides a wide range of directives for you to use. Most students never complete their tasks because they demand too much time and they have too many things to do. Directives are instructions in the DOM (Document Object Model). So, itemSize="100" means that item in the list will require 100px of height. only for specific reason make it angular directive and then use it. Virtual Scrolling loads and unloads elements from the DOM based on the visible parts of a list, where Drag and Drop feature supports dragging, dropping and rearranging elements. API calls and infinite scroll with AngularJS. These Directives style the elements dynamically to reflect the changes within the Data Model. We can create a simple directive to achieve this. The ng-click directive in AngularJS. How to use directive in a sentence. Angular 2 introduces a new change detection system that makes apps much faster and allows developers fine-tune the process. Simply declare which function to call when the user gets close to the bottom of the content with the directive and the module will take care of the rest. Using HTML as the template language, Angular 8 offers developers the possiblity to create their own components. You can use out online editor to edit and run the code online. lazy-scroll is a angularjs directive for infinite scrolling. So if you plan to use it in some other platforms (Angular allows it — read more about it here) — it may not work. A 3D product viewer for Angular, based on the Three. AngularJS Custom Modal Directive. angular-scroll-spy. This allows you to register your own validation directives. UI component infrastructure and Material Design components for mobile and desktop Angular web applications. This directive will add show-scrollTop class. The directive is markers on a DOM element that tell Angular to attach a specified behavior to that DOM element or even transform the DOM element and its children. The scroll position from the element is found using scrollTop. In this article, we are comparing Angular 6 vs Angular 7 vs Angular 8 respectively, Angular 6 features like ng update, Angular Material + CDK components, CLI Workspaces while Angular 7 released with Drag & drop. OK, I Understand. Angular is a platform for building mobile and desktop web applications. The same way, if the user scrolls it reeeallly slow, the function is performed many, many times. It is used for UI rendering manipulation. The endless page functionality works using an Angular directive I created called when-visible. AngularJS Example. In the recent article, I used the new "ng-repeat" in angular 2, "NgFor", and created component that consumes other custom component. UI Grid v4. GitHub Gist: instantly share code, notes, and snippets. Services help us achieve that. The ngStyle attribute is used to change and style the multiple properties of Angular. I was working on a demo this weekend. This course can be. js Integration for Angular 2. A directive to aid in paging large datasets while requiring the bare minimum of actual paging information. This post contains a custom AngularJS directive you can use to give your html table a fixed header and footer with a scrollable body, it uses pure CSS approach and doesn't touch any of the html tags, leaving the html table completely intact and happily semantic :). For example, *ngIf and *ngFor. Angular UI Tour is a plugin that uses Angular UI Bootstrap’s popovers to display a guided product tour. This article focuses on Angular directives — what are they, how to use them, and to build our own. Scrolling functionality works vertically (y-axis) and horizontally (x-axis). In my next post I will try to implement it in Angular 2 by creating an infinite scroll directive. The ng-repeat directive also adds a ng-move class value when the HTML element changes position. In angularJS, you should create a directive that will catch scroll event and call load more data function in controller when user scroll to bottom of page. It is easy to use. Angular 7 Drag and Drop example – Angular Material CDK The @angular/cdk/drag-drop module helps us drag single item or sort it within a horizontal/vertical list, transfer items between lists, show animations, previews, placeholders, custom drag handles. Sometimes, we require to scroll on specific element or div on angularjs application like scroll for go on specific comment, scroll on specific table row it. I’ve written a simple version of this plugin using AngularJS directives, which works for both horizontal and vertial navigation bars. This topic contains 3 replies, has 3 voices, and was last updated by MattR 3 years, 9 months ago. Angular is a platform for building mobile and desktop web applications. Bootstrap widgets for Angular: autocomplete, accordion, alert, carousel, dropdown, pagination, popover, progressbar, rating, tabset, timepicker, tooltip, typeahead. Its element, the md-dialog-content, contains the content of the. The other directives adds a ng-enter class value when they enter the DOM, and a ng-leave attribute when they are removed from the DOM. In angularjs ui grid is used to implement paging, sorting, filtering, grouping, exporting, expandable rows, etc. Angular 2 introduces a new change detection system that makes apps much faster and allows developers fine-tune the process. Angularjs Slim Scroll Directive-Slim Scroll Directive using Angularjs. This article is based on a alpha version of Angular 2 which is now obsolete. You need to include the dependencies in your page:. The directive is markers on a DOM element that tell Angular to attach a specified behavior to that DOM element or even transform the DOM element and its children. Below is the gif of the infinite scroll in action, watch the scroll bar on the right. Angular is a complete rewrite from the same team that built AngularJS. The template element is the element the directive is attached to. If you want to use jQuery One Page Scroll by Pete R. This gives faster experience and the scrolling is also very smooth. But please make sure to check the following. You can create awesome scroll bar using ng-slim-scroll directive in your angular application. It provides a way to build apps for any deployment target by reusing existing code. Visit the homepage https://cli. This tutorial looks at the various aspects of Angular 2 framework which includes the basics of the framework, the setup of Angular and how to work with the various aspects of the framework. AngularJS onScroll directive. If you want to use jQuery One Page Scroll by Pete R. But please make sure to check the following. The current. Here in this tutorial we are going to explain how you can set the textarea value using angularjs. Angular Material uses MatInput Directive to create and inside a. Help Angular by taking a 1 minute survey !. This tutorial explains how the timer services $timeout and $interval works in AngularJS, and how you can use them to schedule function calls. Or, you can quickly try out the showcase below - all of them actually work!. Angular 2 directive scrolls into view. This directive is for jquery-nicescroll in angular js whithout writing single line of javascript code Getting Started StackEdit stores your documents in your browser, which means all your documents are automatically saved locally and are accessible offline!. Altogether, if we now run this Angular app in the browser and scroll the page and the overflow Element, we get the following output: As you can see, when the user scrolls through the page (or the embedded overflow:auto Element), our app component receives new percentage values from the explicit and implicit RxJS streams. Possibly mark. link cdkScrollable and ScrollDispatcher. The scrolling package provides helpers for directives that react to scroll events. Angularjs Slim Scroll is a directive with angular closure compiler. material design off-canvas menu one page scroll parallax progress bar radio button range slider. Buy Angulr - Bootstrap Admin Web App with AngularJS by Flatfull on ThemeForest. GitHub Gist: instantly share code, notes, and snippets. Infinite Scroll in Angular With Firebase Data Episode 37 Aug 7, 2017 written by Jeff Delaney When you have a large collection of information in your database, it’s often not practical to query it in a single go. It listens to mouseenter and mouseout events and shows and hides tooltip as a reaction to the events. Usually, if. when-scrolled="loadData(1)" Here 'loadData(1) ' callback function will get called while div/page is scrolled. If you’re familiar with the @Component decorator that this is probably not new to you. Is it possible to add a new "special" directive to angular, like [[value]], for example? One thing I didn't understand is what do you mean by "hiding" the invisible elements. The ng-include attribute's value can also be an expression, returning a filename. Angular makes this easy with the @HostListener decorator. This gives faster experience and the scrolling is also very smooth. The content is likely be applicable for older Angular 2 or other previous versions. Bootstrap widgets for Angular: autocomplete, accordion, alert, carousel, dropdown, pagination, popover, progressbar, rating, tabset, timepicker, tooltip, typeahead. In the recent article, I used the new "ng-repeat" in angular 2, "NgFor", and created component that consumes other custom component. link cdkScrollable and ScrollDispatcher. Angular/Bootstrap animated submit button directive. Angular ships with a core set of directives that cover many scenarios. Remember that whenever we need to manipulate DOM element, it's recommend that we do it in directive. But sometimes this ‘almost’ makes you waste time for coding workarounds or trying to find out why something happens or doesn’t work as expected. One of its best features is the ability to create directives, or reusable web components. wrap them with the du-scroll-container directive and send the element id as. Use it in your AngularJS app by including the javascript and requireing it: angular. Join the community of millions of developers who build compelling user interfaces with Angular. Angular is only dependency (no jQuery). Angular is a platform for building mobile and desktop web applications. By default, the directive listens to the window scroll event and invoked the callback. Whichever method you choose the good news is that the overall size is very small: <5kb for all directives (~1kb with gzip compression!) Installation. x In this post, we will discuss one of the major updates in Angular 7 version , its new Virtual scroll feature in CDK which is Material Component Development Kit. The directions that scrolling can go in when the header's tabs exceed the header width. Thanks for the great directive Gil! I am getting multiple blank pages at the end for some reason, would you happen to know why that is? P. Is it possible to add a new "special" directive to angular, like [[value]], for example? One thing I didn't understand is what do you mean by "hiding" the invisible elements. WebStorm provides support for Angular and helps you on every step of the development process – from creating a new Angular app and working on the components to debugging and testing it. I am new to Angular (even though I am not new to the web development), so please take everything that I am about to say with a grain of salt. This is nice to have if you want the URL bar to reflect where on the page the visitor are, like this:. The ngStyle attribute is used to change and style the multiple properties of Angular. Scroll Bar with Dynamic Data Using Angular Directive Last Updated On: June 28, 2019 June 28, 2019 | By: Parvez Scroll bar is very useful to any modern website and blog, sometimes we need to set scroll on div which hold a lot of dynamic data. This service creates for that code which is common for more than one component. In the above code, we have created a div with class scroll-to-top and uses a conditional class with [ngClass] which is a built-in directive of angular. You can also use our online editor to edit and run the code online. It specifies how to place our business logic in Angular. Angularjs ui grid (ng-grid) with example. In an Angular 4. Angular 7 Virtual Scroll Table November 14, 2018 | Table Angular 7 – virtual scroll table with support draggable, pagination, server side, sorting, filtering, resizing, dynamic component and custom config for each column. Animated scrolling functionality for angular written in pure typescript with no additional dependencies. A list of top frequently asked Angular 7 Interview Questions and answers are given below. Angular7 is the complete rewrite of the Angular1. Angular is a platform for building mobile and desktop web applications. js is a javascript library that merges pictures and QR codes for artistic QR codes. AngularJS was the first version of Angular which is also known as Angular 1. In the above code, we have created a div with class scroll-to-top and uses a conditional class with [ngClass] which is a built-in directive of angular. Ben Nadel demonstrates how to use the CSS property "overflow: hidden" to prevent scrolling on the Body element in an Angular 5. 4 now that Angular 6 has added the ability for the Router to differentiate between imperative navigation and popstate navigation using the NavigationStart event. Build a Single Page Application SPA Using AngularJS: All we need to know about AngularJS was explained in our previous tutorial. Here is what we think are the Top 5 Scrolling AngularJS Modules. ngInfiniteScroll is a directive that you can use to implement infinite scrolling in your AngularJS applications. It works, essentially, but looking at the scroll offsets when a component is deactivated (and removed from the DOM); and then, making sure those same offsets are set when the next component is activated in the DOM. anchorscroll() will help to scroll on specific "anchor" div id. ngInfiniteScroll is a directive that you can use to implement infinite scrolling in your AngularJS applications. Answer: Three directive scopes are available in AngularJs. Infinite scroll not only improves the interaction but also helps in putting less latency to Server because we don't have to load all of the data from the server in the browser at once. Angularjs Directive Scrollbar. It does this in lieu of ever scrolling back to the top of page. Here we will also add a toggle button to enable and disable infinite scroll functionality. Now we can do this in the controller to add logic to the directives. The directions that scrolling can go in when the header's tabs exceed the header width. The component displays large lists of elements performantly by only rendering the items that fit on-screen. Ben Nadel revisits his scroll storage and restoration polyfill in Angular 7. ## Filtering the Table. In constructor, we are injecting the ElementRef which gives us the reference to the element to which the directive is applied. Creating Stateful Modals in AngularJS with Angular UI Router Define the ui-view Directive for Our Modal to Load Into The autoscroll="false" setting prevents the ui-router from attempting. It's applied to the element which set height or width attribute and the overflow is auto, but exclude body element. AngularJS 'when-scrolled' directive is to implement infinite scrolling, which is supposed to detect the div scroll. Angular 3D Product Viewer With Three. Can an angular directive pass arguments to functions in expressions specified in the directive's attributes? Hot Network Questions How can religions without a hell discourage evil-doing?. 1) What is Angular 7? How is it different from AngularJS? Angular7 is the latest and recent version of Angular. Most students never complete their tasks because they demand too much time and they have too many things to do. and rest will handle by module and directive. of the component. But please make sure to check the following. You can also use our online editor to edit and run the code online. 1) ng-scroll-config. We can control whether expanding an item will cause the other items to close, using the close-others attribute on accordion. Possibly mark. These are just a core set of components that provide vanilla functionality,. For the tables with a huge amount of data you can use scroll functionality, as an alternative for the pagination. Ionic is the app platform for web developers. functionalities without writing much code in applications. Auto-Scroll-To Directive This repository discusses about a sample directive for automatically scrolling to a particular element. module('myApp', ['angular-inview']). The "Questions: Infinite scrolling, Directives & Routing" Lesson is part of the full, Angular 1. In angularJS, you should create a directive that will catch scroll event and call load more data function in controller when user scroll to bottom of page. All code belongs to the poster and no license is enforced. An angular directive to add vertical scrollbar. Angular material and component dev kit (CDK): The angular 7 introduced major updates compared to previous versions along with the improvements in refresh, virtual scrolling, large lists of data, dynamic loading and unloading of parts of DOM. We use cookies for various purposes including analytics. Using grunt and bower with bootstrap and angular, feat. Angular is Google's open source framework for crafting high-quality front-end web applications. but usually, this one doesn't scroll. Angular Directive For Scroll Event Based Animations. 8K minified or 2K gzipped. AngularJS tutorial for beginners - AngularJS is a JavaScript framework that operates on the client side and it is the most popular programming language in the market after python. We are very dependant on the server for "filtering" results in this paging scheme. UI component infrastructure and Material Design components for mobile and desktop Angular web applications. I want to implement a simple concept using angular, scrolling to a specific area of the page using a directive, I found myself needing this in a pagination example, I want to scroll to the top of the list when the user clicks on next page. Auto-Scroll-To Directive This repository discusses about a sample directive for automatically scrolling to a particular element. The Content component will not emit scroll events by default, so we also need to enable scrollEvents on ion-content. Here is what we think are the Top 5 Scrolling AngularJS Modules. In this article, I continue to show further development for Echoes Player with Angular (+2), this time - making it more dynamic by adding infinite scroll directive as what is known in angular2 as an attribute directive. scrollToBottom(offset, speed) // Animate scroll to given offset from the bottom. The current. In Angular JS, you can use one directive as an element and other directives as attributes to the element, allowing you to specify different functionality for elements based on the attributes in the element. It it used to "watch" the current scroll position. Run this demo in my JavaScript Demos project on GitHub. GitHub Gist: instantly share code, notes, and snippets. Now we can do this in the controller to add logic to the directives. In this directive user can also set the properties for the custom scroll bar, For e. The ng-include attribute's value can also be an expression, returning a filename. Breaking Change: Starting with v6 this library consists of two modules: ngx-page-scroll-core (the service) and ngx-page-scroll (the directive). Here in this tutorial we are going to explain how you can use this method to scroll to the bottom of the page. Using @HostBinding and @HostListener in Custom Angular Directives @HostBinding and @HostListener are two decorators in Angular that can be really useful in custom directives. The directions that scrolling can go in when the header's tabs exceed the header width. We can create a simple directive to achieve this. For the tables with a huge amount of data you can use scroll functionality, as an alternative for the pagination. Proin nibh augue, suscipit a, scelerisque sed, lacinia in, mi. NOW is the good time to learn Angular. Angular helps to create applications like this easily. An angular directive to add vertical scrollbar. This seems a bit 'icky'. Behaving like a native component, Scheduler supports two-way binding to scope properties and declarative configuration. Here is what we think are the Top 5 Scrolling AngularJS Modules. Angular 6 accordion using *ngIf and hidden directive (1,397) How to fix Bootstrap modal background scroll to top and content is moved to left (1,141) Form validation in yii 2 using model with example (898). The ui-scroll-viewport directive eliminates this effect by disabling the 'overflow-anchor' css-property on its element. In fact, @Directive is a superset of @Component which is why most of the configuration properties are available. It listens to mouseenter and mouseout events and shows and hides tooltip as a reaction to the events. Angular is a complete rewrite from the same team that built AngularJS. Bootstrap widgets for Angular: autocomplete, accordion, alert, carousel, dropdown, pagination, popover, progressbar, rating, tabset, timepicker, tooltip, typeahead. The developer simply declares bindings between binding sources and the target HTML elements, letting Angular do the work. AngularJS Directive For Mouse Wheel Scroll Event Wednesday, 8 April 2015 | Posted by Unknown I found a way to implement mouse wheel scroll event with hamster. The ng-show and ng-hide directives adds or removes a ng-hide class value.