Angular @input Check Which Property Changed using OnChanges

Using @Input decorator parent component can pass values to child components using property binding. But there may be a case where we are passing more than one property in a child component.

We may need control on which property is changed and also check if other properties have changed from the previous one or not.

In this tutorial, we will discuss how to check which of the passed input properties changed by using the OnChanges lifecycle hook of a component. Continue reading Angular @input Check Which Property Changed using OnChanges

Angular 8/9 Image Slider with Lightbox using ng-image-slider Tutorial

In this tutorial, we will discuss a simple awesome image slider with a great feature to show a full-screen lightbox of full image on click.

This image slider is created by Sanjay Verma and loaded with many features required for a web layout based application.

A user can click on an image in the slider to view its original size image in full screen. Besides this catching feature, it supports autoplay, infinite, animation control, etc. Continue reading Angular 8/9 Image Slider with Lightbox using ng-image-slider Tutorial

Angular 8/9 Autocomplete using angular-ng-autocomplete Package Tutorial by example

In general Autocomplete or Auto, suggestion control is used to show/ fetch related items from a local or remote server as user types to make a selection from available items.

In this tutorial, we will discuss the angular-ng-autocomplete package using which we can easily implement a fully-featured autocomplete without using any third party framework like Material or Bootstrap.

This package provides many inbuilt features to make Autocomplete control more user-friendly for a user. Continue reading Angular 8/9 Autocomplete using angular-ng-autocomplete Package Tutorial by example

Angular 7/8/9 | Angular EventEmitter and RxJs Subjects Quick Tutorial by Example

Data communication between components siblings or from Parent to child or vise-versa is possible by using many ways in Angular applications.

Sometimes we may need to pass data or any information to parent component from any of its child components in its hierarchy. For example, we have messages component which shows unread messages, now if we want to display the count on the header component.

In that case, we have two options available to do so. The EventEmitter available in angular core package and RxJS Subject provides observable which can be used to emit values to other components. Continue reading Angular 7/8/9 | Angular EventEmitter and RxJs Subjects Quick Tutorial by Example

Angular 7/8/9 | Draggable Bootstrap Modals in 2 Steps! Tutorial by Example

Using modals in application really helps by adding a new layer of space on-page to add more information to users. They are the very common and most preferred way of displaying data.

Bootstrap modals in an Angular project are super easy to add and use anywhere in the project. But modals opens on some underlying data that a user can miss when modal is open. It can be closed easily but what if there is some hard filled data?

In this tutorial, we will add an extra amazing feature of dragging the Bootstrap modal using a handle using which a user can drag the modal a bit to see underlying info then simply release the icon to revert its original position.

Sounds great? let’s do it in just 2 steps 🙂 Continue reading Angular 7/8/9 | Draggable Bootstrap Modals in 2 Steps! Tutorial by Example

Angular 8/9 | Custom Filter Pipe Get Child Values based on Parent Id Passed

In client-side applications, we may need to filter out a set of data based on some unique values of the property passed to it. This type of data set can be a list of items with a parent-child relationship where they need to refine the child results based on parent id in it.

In Angular applications, we can do so by using Filter Pipes which can be easily used on a data object with custom login. Continue reading Angular 8/9 | Custom Filter Pipe Get Child Values based on Parent Id Passed

Angular 7/8/9 | Search Pipe Filter using ng2-search-filter Quick Example Tutorial

Sometimes we may have a long list of items or data in tabular form which is added on the component for users. In that case, adding a simple filter search bar can prove a boon for a user to filter the required set of information.

The ng2-search-filter package provides a ready to use pipe filter to add search functionality nearly to any type of object data.

This package is very easy to use and implement.

Here we will look into the steps required to install the ng2-search-filter package and usage tutorial with some more tricks and tips. Continue reading Angular 7/8/9 | Search Pipe Filter using ng2-search-filter Quick Example Tutorial

Angular 7/8/9 | Add ( Star *) Asterisk Sign to Required Fields using Custom Directive for Bootstrap Form

Adding Asterisk to required fields on a form helps the user to quickly identify the required fields. Adding a star(*) is now an industrial standard that is required in almost every data-centric application consuming any kind of data.

For lengthy form it becomes a cumbersome job to add star sign to every form of control. Here we will discuss how to create a custom Angular 2+ directive to automatically add an asterisk(*) sign to required field controls like Input, Textarea, Radio, Checkboxes, and Select boxes.

Continue reading Angular 7/8/9 | Add ( Star *) Asterisk Sign to Required Fields using Custom Directive for Bootstrap Form

Angular Material 8 | Adding Multiple Tables on Single Component Tutorial

Angular material tables provide the fully loaded table components in which we can easily add sorting, paging, filter like features without any much codding. It works like charm in real-world applications and provides a nice user-friendly user interface.

Sometimes our component may represent more than one grid of tabular data, in that case, it becomes a bit confusing on how to add more than one Angular material tables in a single component having respective sorting and pagination components. Continue reading Angular Material 8 | Adding Multiple Tables on Single Component Tutorial

Angular 7/8 | Hide Div on Click Ouside Angular Tutorial

In this tutorial, we will learn how to trigger click events on an element when we click outside of that element container in Angular.

We used to have a target element in JQuery using which we could have easily detected if the clicked element is the same element or its outside that element.

In Angular, we will use a nice package module called ng-click-outside which provides a directive component to trigger click event when we click outside of an element with click event bindings. Continue reading Angular 7/8 | Hide Div on Click Ouside Angular Tutorial