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@ravithb/ngx-loading

v16.0.2

Published

A customisable loading spinner for Angular applications.

Downloads

5

Readme

ngx-loading

A customisable loading spinner for Angular applications.

npm version Monthly Downloads Known Vulnerabilities

ngx-loading

Table of contents

  1. Demo
  2. Installation
  3. Getting started
  4. Input parameters
  5. Config options

Demo

Check out the interactive demo on StackBlitz.

Installation

Install ngx-loading via NPM, using the command below.

NPM

npm install --save ngx-loading

NOTE: Version 15 of this package requires Angular 15 as a dependency. If you are using an older version of Angular, please install the relevant version e.g. 2.0.1 for Angular 2:

npm install --save [email protected]

Getting started

Import the NgxLoadingModule in your root application module:

import { BrowserModule } from "@angular/platform-browser";
import { NgModule } from "@angular/core";
import { CoreModule } from "./core/core.module";
import { NgxLoadingModule } from "ngx-loading";

@NgModule({
  //...
  imports: [
    //...
    NgxLoadingModule.forRoot({}),
  ],
  //...
})
export class AppModule {}

You must create a boolean variable (e.g. loading below) that is accessible from the component which will contain ngx-loading. This boolean is used as an input into ngx-loading, and will determine when the loading spinner is visible.

import { Component, OnInit } from "@angular/core";

@Component({
  //...
})
export class AppComponent implements OnInit {
  //...
  public loading = false;

  constructor(private authService: AuthService) {}

  ngOnInit() {}

  Login() {
    this.loading = true;
    this.authService.login(this.email, this.password).subscribe(
      (res) => {
        this.loading = false;
        //...
      },
      (err) => {
        this.loading = false;
        //...
      }
    );
  }
}

Next, add the ngx-loading component selector to your application component's template. Set the [show] input variable of ngx-loading to point to your boolean, which will determine when ngx-loading is visible. Optionally set the [config] input variable of ngx-loading to setup custom configuration options. If the [config] input variable is not set, the globally configured configuration will be used, if set. If no config options are set, the ngx-loading default config options will be used. See Config options for further information.

You can also optionally define a [template] input variable, which can be used to inject your own custom templates into the component.

NOTE: ngx-loading will fill the entirety of its parent component. If you wish for ngx-loading to only fill a specific element within your component, ensure that ngx-loading is a child element of that element, and that the containing element has its position attribute set to relative.

<div class="my-container">
  <ng-template #customLoadingTemplate>
    <div class="custom-class">
      <h3>Loading...</h3>
      <button (click)="showAlert()">Click me!</button>
    </div>
  </ng-template>

  <ngx-loading
    [show]="loading"
    [config]="{ backdropBorderRadius: '3px' }"
    [template]="customLoadingTemplate"
  ></ngx-loading>
  //...
</div>

Input parameters

| Input | Required | Details | | -------- | -------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | show | Required | A boolean, which will determine when ngx-loading is visible. | | config | Optional | A set of configuration options for ngx-loading. If this is not specified, the globally configured configuration will be used, if set. If no config options are set, the ngx-loading default config options will be used. See Config options. | | template | Optional | A TemplateRef, which will be displayed within the ngx-loading component. Use this to inject your own custom templates into the component. |

Config options

| Option | Required | Default | Details | | ------------------------ | -------- | ------------------------------------ | --------------------------------------------------------------------------------------------------------------- | | animationType | Optional | ngxLoadingAnimationTypes.threeBounce | The animation to be used within ngx-loading. Use the ngxLoadingAnimationTypes constant to select valid options. | | backdropBorderRadius | Optional | 0 | The border-radius to be applied to the ngx-loading backdrop, e.g. '14px'. | | backdropBackgroundColour | Optional | rgba(0, 0, 0, 0.3) | The background-color to be applied to the ngx-loading backdrop, e.g. 'rgba(255, 255, 255, 0.2)'. | | fullScreenBackdrop | Optional | false | Set to true to make the backdrop full screen, with the loading animation centered in the middle of the screen. | | primaryColour | Optional | #ffffff | The primary colour, which will be applied to the ngx-loading animation. | | secondaryColour | Optional | #ffffff | The secondary colour, which will be applied to the ngx-loading animation (where appropriate). | | tertiaryColour | Optional | #ffffff | The tertiary colour, which will be applied to the ngx-loading animation (where appropriate). |

Config options can be set globally (using the .forRoot() module import statement), as well as being passed into each ngx-loading instance, if required. Config options that are passed into an ngx-loading element will override any custom global config options that have been set. A combination of the two can be used together if appropriate. If no config is set, the default ngx-loading config options will be used. Please see below for an example custom configuration setup, using both global and local configurations.

import { BrowserModule } from "@angular/platform-browser";
import { NgModule } from "@angular/core";
import { CoreModule } from "./core/core.module";
import { NgxLoadingModule, ngxLoadingAnimationTypes } from "ngx-loading";

@NgModule({
  //...
  imports: [
    //...
    NgxLoadingModule.forRoot({
      animationType: ngxLoadingAnimationTypes.wanderingCubes,
      backdropBackgroundColour: "rgba(0,0,0,0.1)",
      backdropBorderRadius: "4px",
      primaryColour: "#ffffff",
      secondaryColour: "#ffffff",
      tertiaryColour: "#ffffff",
    }),
  ],
  //...
})
export class AppModule {}
<div class="my-container">
  <ng-template #customLoadingTemplate>
    <div class="custom-class">
      <h3>Loading...</h3>
      <button (click)="showAlert()">Click me!</button>
    </div>
  </ng-template>

  <ngx-loading
    [show]="loading"
    [config]="{ animationType: ngxLoadingAnimationTypes.rectangleBounce,
        backdropBackgroundColour: 'rgba(255,255,255,0.3)', backdropBorderRadius: '10px',
        primaryColour: '#ffffff', secondaryColour: '#ffffff', tertiaryColour: '#ffffff' }"
    [template]="customLoadingTemplate"
  ></ngx-loading>
  //...
</div>