Table of contents

• Online Demo
• Installation
• Usage
• API
• Examples

Installation

npm install --save ng2-loading-spinner

Usage

Import Ng2LoadingSpinnerModule in your module

import { NgModule } from '@angular/core';
import { Ng2LoadingSpinnerModule } from 'ng2-loading-spinner'

@NgModule({
  imports: [ Ng2LoadingSpinnerModule.forRoot({}) ]
})
export class TestModule { }

then, use the ng2-loading directive on the element you want to have a spinner on:

<div class="card"
  [ng2-loading]="showSpinner">
    ...
</div>

the directive expects a boolean for showing and removing Loading spinner:

@Component({
    selector   : 'app.component',
    templateUrl: './app.component.html',
    styleUrls  : [ './app.component.css' ]
})
export class AppComponent {
    showSpinner: boolean = true;


    constructor() {
    	setTimeout(() => {
        	this.showSpinner = false;
        }, 1500);
    }
}

API

Input parameters

Input | Type | Required | Description | ------ | ----- | ----- | ----- | ng2-loading | boolean | Required | A boolean, which will determine when spinner is added to the DOM | config | INg2LoadingSpinnerConfig | Optional | Configuartion object for spinner. If no config options are set, the default config options will be used. | template | TemplateRef | Optional | If provided, the custom template will be shown in place of the default spinner animations. You can use this for rendering custom spinners instead of default spinner animations |

Configurable options

Config options can be set globally using the forRoot module import statement as well as being passed into each loader instance.Options passed to the instance of loader will override each global options.

Option | Required | type | Default value | Description | Examples | --- | --- | --- | --- | --- | ---- | animationType | Optional | string | ANIMATION_TYPES.fadingCircle | The spinner animation to be used. import ANIMATION_TYPES constant to select valid options. | ANIMATION_TYPES.chasingDots | backdropColor | Optional | string | rgba(0, 0, 0, 0.3) | Background color of backdrop element | 'red', 'rgb(120, 0, 171)', '#434343' | backdropBorderRadius | Optional | string | 0 | The border-radius property to be aplied to the spinner | '10px', '1rem', '50%' | spinnerColor | Optional | string | white | Color of spinner | 'red', 'rgb(120, 0, 171)', '#434343' | spinnerPosition | Optional | string | 'center' | Position the spinner into the host view | 'top', 'right', 'bottom', 'left', 'top-right', 'bottom-left' | spinnerSize | Optional | string | 'md' | Option that indicates size of spinner | 'sm', 'md', 'lg' | spinnerFontSize | Optional | string | | Option for controlling size of spinner.If provided spinnerSize option will be ignored | '10px', '1rem' |

Available spinner positions:

Position | ------ | center | top | right | bottom | left | top-right | left-right | top-left | bottom-left |

Available spinner sizes:

Size | ------ | xs | sm | md | lg | xl |

Examples

Example 1 - with custom configuration options

import { NgModule } from '@angular/core';
import { Ng2LoadingSpinnerModule } from 'ng2-loading-spinner'

@NgModule({
  imports: [ Ng2LoadingSpinnerModule.forRoot({
    backdropColor  : 'rgba(0, 0, 0, 0.3)',
    spinnerColor   : '#fff',
  }) ]
})
export class TestModule { }

import { Component } from '@angular/core';
import { ANIMATION_TYPES } from 'ng2-loading-spinner';
import { INg2LoadingSpinnerConfig } from 'ng2-loading-spinner';

@Component({
    selector   : 'app-example1',
    templateUrl: './example1.component.html',
    styleUrls  : [ './example1.component.css' ]
})

export class Example1Component {
    show = false;

    loadingConfig: INg2LoadingSpinnerConfig = {
        animationType  : ANIMATION_TYPES.dualCircle,
        spinnerPosition: 'left',
        backdropBorderRadius: '15px',
        spinnerSize: 'md',
        spinnerFontSize: '2rem'
    };


    constructor () {
    }

    showLoading() {
        this.show = true;
        setTimeout(() => {
            this.show = false;
        }, 1500);
    }
}

<button class="btn btn-dark"
        [ng2-loading]="show"
        [config]="loadingConfig"
        (click)="showLoading()">
   Show Spinner
</button>

Example2 - using custom template

import { Component } from '@angular/core';
import { ANIMATION_TYPES } from 'ng2-loading-spinner';
import { INg2LoadingSpinnerConfig } from 'ng2-loading-spinner';
import { AuthService } from '../auth.service'

@Component({
    selector   : 'app-example2',
    templateUrl: './example2.component.html',
    styleUrls  : [ './example2.component.css' ]
})

export class Example2Component {
    show = false;

    loadingConfig: INg2LoadingSpinnerConfig = {
        animationType  : ANIMATION_TYPES.dualCircle,
        backdropColor  : 'rgba(0, 0, 0, 0.3)',
        spinnerColor   : '#fff',
        spinnerPosition: 'center',
        backdropBorderRadius: '15px',
        spinnerSize: 'md',
        spinnerFontSize: '2rem'
    };


    constructor (private authService: AuthService) {
    }

    onLogin() {
        this.show = true;
        this.authService.login()
            .subscribe((res) => {
              this.show = false;
            })
    }
}

<form [ng2-loading]="show"
 [config]="loadingConfig"
 [template]="customTemplate">
    <input type="text" placeholder="username">
    <input type="password" placeholder="password">
    <button class="btn" (click)="onLogin()">Login</button>
<form>



<ng-template #customTemplate>
    <div class="align-items-center d-flex flex-column flex-direction">
        <p>Please wait</p>
        <div class="custom-loader"></div>
    </div>
</ng-template>

and style this custom loader in example2.component.css:

.custom-loader {
    ....
}