Build your web apps using Smart UI
Smart.ScrollBar - configuration and usage
Overview
A scroll bar is a numeric control used to select a numeric value from a range of values by moving a thumb along a track or by clicking on the track itself. It is typically used in conjucntion with the listbox and dropdown elements to allow scrolling through the items. The user can change the value by clicking in the tank area if it is set as an input element.
Getting Started with ScrollBar Web Component
Smart UI for Web Components is distributed as smart-webcomponents NPM package. You can also get the full download from our website with all demos from the Download page.Setup the ScrollBar
Smart UI for Web Components is distributed as smart-webcomponents NPM package
- Download and install the package.
npm install smart-webcomponents
- Once installed, import the ScrollBar module in your application.
<script type="module" src="node_modules/smart-webcomponents/source/modules/smart.scrollbar.js"></script>
-
Adding CSS reference
The smart.default.css CSS file should be referenced using following code.
<link rel="stylesheet" type="text/css" href="node_modules/smart-webcomponents/source/styles/smart.default.css" />
- Add the ScrollBar tag to your Web Page
<smart-scroll-bar id="scrollbar"></smart-scroll-bar>
- Create the ScrollBar Component
<script type="module"> Smart('#scrollbar', class { get properties() { return {value: 50} } }); </script>
Another option is to create the ScrollBar is by using the traditional Javascript way:
const scrollbar = document.createElement('smart-scroll-bar'); scrollbar.disabled = true; document.body.appendChild(scrollbar);
Smart framework provides a way to dynamically create a web component on demand from a DIV tag which is used as a host. The following imports the web component's module and creates it on demand, when the document is ready. The #scrollbar is the ID of a DIV tag.
import "../../source/modules/smart.scrollbar.js"; document.readyState === 'complete' ? init() : window.onload = init; function init() { const scrollbar = new Smart.ScrollBar('#scrollbar', {value: 50}); }
- Open the page in your web server.
Appearance
The scroll bar can be horizontal or vertical. This could be set via orientation property.
<smart-scroll-bar orientation="vertical"></smart-scroll-bar>
Demo

Behavior
Scrollbar's range is defined by min and max properties.
When scrollbar's button is pressed, the value is increased/decreased by value, defined in step property.
If the user press the left mouse button in the area between a scrollbar button and thumb the value is increased/decreased by the value of largeStep property.
<smart-scroll-bar min="0" max="100" step="10" large-step="20"></smart-scroll-bar>
Demo

Styling
Smart.ScrollBar uses the following CSS variables for styling:
- --smart-scroll-button-size: used to set the size of the scroll buttons. Default value is 16px.
Create, Append, Remove, Get/Set Property, Invoke Method, Bind to Event
Create a new element:
const scrollbar = document.createElement('smart-scroll-bar');
Append it to the DOM:
document.body.appendChild(scrollbar);
Remove it from the DOM:
scrollbar.parentNode.removeChild(scrollbar);
Set a property:
scrollbar.propertyName = propertyValue;
Get a property value:
const propertyValue = scrollbar.propertyName;
Invoke a method:
scrollbar.methodName(argument1, argument2);
Add Event Listener:
const eventHandler = (event) => { // your code here. }; scrollbar.addEventListener(eventName, eventHandler);
Remove Event Listener:
scrollbar.removeEventListener(eventName, eventHandler, true);
Using with Typescript
Smart Web Components package includes TypeScript definitions which enables strongly-typed access to the Smart UI Components and their configuration.
Inside the download package, the typescript directory contains .d.ts file for each web component and a smart.elements.d.ts typescript definitions file for all web components. Copy the typescript definitions file to your project and in your TypeScript file add a reference to smart.elements.d.ts
Read more about using Smart UI with Typescript.Getting Started with Angular ScrollBar Component
Setup Angular Environment
Angular provides the easiest way to set angular CLI projects using Angular CLI tool.
Install the CLI application globally to your machine.
npm install -g @angular/cli
Create a new Application
ng new smart-angular-scrollbar
Navigate to the created project folder
cd smart-angular-scrollbar
Setup the ScrollBar
Smart UI for Angular is distributed as smart-webcomponents-angular NPM package
- Download and install the package.
npm install smart-webcomponents-angular
- Once installed, import the ScrollBarModule in your application root or feature module.
app.module.ts
import { NgModule } from '@angular/core'; import { BrowserModule } from '@angular/platform-browser'; import { ScrollBarModule } from 'smart-webcomponents-angular/scrollbar'; import { AppComponent } from './app.component'; @NgModule({ declarations: [ AppComponent ], imports: [ BrowserModule, ScrollBarModule ], bootstrap: [ AppComponent ], entryComponents: [ AppComponent ] }) export class AppModule { }
- Adding CSS reference
The following CSS file is available in ../node_modules/smart-webcomponents-angular/ package folder. This can be referenced in [src/styles.css] using following code.@import 'smart-webcomponents-angular/source/styles/smart.default.css';
Another way to achieve the same is to edit the angular.json file and in the styles add the style."styles": [ "node_modules/smart-webcomponents-angular/source/styles/smart.default.css" ]
-
Example
app.component.html
<section> <div> <h2>Scrollbars let users to select values by moving the scrollbar thumb.</h2> <div class="module"> <p>Scrollbars are ideal components for adjusting settings that reflect intensity levels, such as volume, brightness, or color saturation.</p> </div> </div> </section> <section id="continuousSliders"> <h2>Continuous scrollbar</h2> <div class="module"> <p>Use continuous scrollbars for subjective settings that do not require a specific value for the user to make meaningful adjustments.</p> </div> <div class="module continuousSliderLight"> <table> <tr> <td> <p>Normal</p> </td> <tr/> <tr> <td> <smart-scroll-bar #scrollbar></smart-scroll-bar> </td> <tr/> <tr> <td> <smart-scroll-bar #scrollbar2 max="100" value="50"></smart-scroll-bar> </td> <tr/> <tr> <td> <smart-scroll-bar #scrollbar3 max="100" value="100"></smart-scroll-bar> </td> </tr> <tr> <td> <p>Disabled</p> </td> <tr/> <tr> <td> <smart-scroll-bar #scrollbar4 disabled max="100"></smart-scroll-bar> </td> <tr/> <tr> <td> <smart-scroll-bar #scrollbar5 disabled max="100" value="50"></smart-scroll-bar> </td> <tr/> <tr> <td> <smart-scroll-bar #scrollbar6 disabled max="100" value="100"></smart-scroll-bar> </td> </tr> </table> </div> </section> <section id="verticalSliders"> <h2>Orientation</h2> <div class="module"> <p>smartScrollBar can be horizontal or vertical depending on the orientation property.</p> </div> <div class="module"> <div> <smart-scroll-bar #scrollbar7 max="100" value="50"></smart-scroll-bar> <br/> <br/> <smart-scroll-bar #scrollbar8 orientation="vertical" max="100" value="75"></smart-scroll-bar> </div> <br/> <p>Vertical scrollbars</p> </div> </section> <section id="demoSliders"> <h2>Demo</h2> <div class="module"> <p>ScrollBars are controls that are used for adjusting values precisely.</p> </div> <div class="module media-controls"> <div> <h2>Volumes</h2> <div> <h3>Media volume</h3> <div id="mediaControl" class="controls"> <i class="material-icons"></i> <smart-scroll-bar #scrollbar9 id="mediaSlider" max="100" value="25"></smart-scroll-bar> </div> </div> <div> <h3>Alarm volume</h3> <div id="alarmControl" class="controls"> <i class="material-icons"></i> <smart-scroll-bar #scrollbar10 id="alarmSlider" max="100" value="50"></smart-scroll-bar> </div> </div> <div> <h3>Ring volume</h3> <div id="ringControl" class="controls"> <i class="material-icons"></i> <smart-scroll-bar #scrollbar11 id="volumeSlider" max="100" value="75"></smart-scroll-bar> </div> </div> </div> </div> <div class="module power-controls"> <div> <h2>Battery Saver Mode</h2> <div> <h3>Low battery alert on <b id="lowBatteryAlert">15</b> %</h3> <div id="mediaControl" class="controls"> <i class="material-icons"></i> <smart-scroll-bar #scrollbar12 id="lowBatterySlider" max="100" value="15" scale-type="integer"></smart-scroll-bar> </div> </div> <div> <h3>Power saver mode active on <b id="powerSaver">50</b>%</h3> <div id="alarmControl" class="controls"> <i class="material-icons"></i> <smart-scroll-bar #scrollbar13 id="powerSaverSlider" max="100" value="50" scale-type="integer"></smart-scroll-bar> </div> </div> </div> </div> </section>
app.component.ts
import { Component, ViewChild, OnInit, AfterViewInit } from '@angular/core'; import { ScrollBarComponent } from 'smart-webcomponents-angular/scrollbar'; @Component({ selector: 'app-root', templateUrl: './app.component.html', styleUrls: ['./app.component.css'] }) export class AppComponent implements AfterViewInit, OnInit { @ViewChild('scrollbar', { read: ScrollBarComponent, static: false }) scrollbar: ScrollBarComponent; @ViewChild('scrollbar2', { read: ScrollBarComponent, static: false }) scrollbar2: ScrollBarComponent; @ViewChild('scrollbar3', { read: ScrollBarComponent, static: false }) scrollbar3: ScrollBarComponent; @ViewChild('scrollbar4', { read: ScrollBarComponent, static: false }) scrollbar4: ScrollBarComponent; @ViewChild('scrollbar5', { read: ScrollBarComponent, static: false }) scrollbar5: ScrollBarComponent; @ViewChild('scrollbar6', { read: ScrollBarComponent, static: false }) scrollbar6: ScrollBarComponent; @ViewChild('scrollbar7', { read: ScrollBarComponent, static: false }) scrollbar7: ScrollBarComponent; @ViewChild('scrollbar8', { read: ScrollBarComponent, static: false }) scrollbar8: ScrollBarComponent; @ViewChild('scrollbar9', { read: ScrollBarComponent, static: false }) scrollbar9: ScrollBarComponent; @ViewChild('scrollbar10', { read: ScrollBarComponent, static: false }) scrollbar10: ScrollBarComponent; @ViewChild('scrollbar11', { read: ScrollBarComponent, static: false }) scrollbar11: ScrollBarComponent; @ViewChild('scrollbar12', { read: ScrollBarComponent, static: false }) scrollbar12: ScrollBarComponent; @ViewChild('scrollbar13', { read: ScrollBarComponent, static: false }) scrollbar13: ScrollBarComponent; ngOnInit(): void { // onInit code. } ngAfterViewInit(): void { // afterViewInit code. this.init(); } init(): void { // init code. const mediaSlider = document.getElementById('mediaSlider'), alarmSlider = document.getElementById('alarmSlider'), volumeSlider = document.getElementById('volumeSlider'), lowBatterySlider = document.getElementById('lowBatterySlider'), powerSaverSlider = document.getElementById('powerSaverSlider'); function setIcon(event) { let below = "", above = "", off = ""; const slider = event.target; switch (slider) { case mediaSlider: below = '<i class="material-icons"></i>'; above = '<i class="material-icons"></i>'; off = '<i class="material-icons"></i>'; break; case alarmSlider: below = above = '<i class="material-icons"></i>'; off = '<i class="material-icons"></i>'; break; case volumeSlider: below = '<i class="material-icons"></i>'; above = '<i class="material-icons"></i>'; off = '<i class="material-icons"></i>'; break; } if (slider.value === slider.min) { slider.previousElementSibling.innerHTML = off; } else if (slider.value < slider.max / 2) { slider.previousElementSibling.innerHTML = below; } else { slider.previousElementSibling.innerHTML = above; } } function setBatteryLevel(event) { const slider = event.target; if (slider === lowBatterySlider) { document.getElementById('lowBatteryAlert').textContent = slider.value.toString(); } else { document.getElementById('powerSaver').textContent = slider.value.toString(); } } mediaSlider.addEventListener('change', setIcon); alarmSlider.addEventListener('change', setIcon); volumeSlider.addEventListener('change', setIcon); lowBatterySlider.addEventListener('change', setBatteryLevel); powerSaverSlider.addEventListener('change', setBatteryLevel); } }
app.module.ts
import { NgModule } from '@angular/core'; import { BrowserModule } from '@angular/platform-browser'; import { ScrollBarModule } from 'smart-webcomponents-angular/scrollbar'; import { AppComponent } from './app.component'; @NgModule({ declarations: [ AppComponent ], imports: [ BrowserModule, ScrollBarModule ], bootstrap: [ AppComponent ], entryComponents: [ AppComponent ] }) export class AppModule { }
Running the Angular application
After completing the steps required to render a ScrollBar, run the following command to display the output in your web browser
ng serveand open localhost:4200 in your favorite web browser.
Read more about using Smart UI for Angular: https://www.htmlelements.com/docs/angular-cli/.
Getting Started with React ScrollBar Component
Setup React Environment
The easiest way to start with React is to use create-react-app. To scaffold your project structure, follow the installation instructions.
npm install -g create-react-app create-react-app my-app cd my-app npm start
Preparation
Open src/App.js andsrc/App.css
- Remove everything inside the App div tag in src/App.js:
<div className="App"> </div>
- Remove the logo.svg import
- Remove the contents of src/App.css
- Remove src/logo.svg
Setup the ScrollBar
Smart UI for React is distributed as smart-webcomponents-react NPM package
- Download and install the package.
npm install smart-webcomponents-react
Once installed, import the React ScrollBar Component and CSS files in your application and render it
app.js
import 'smart-webcomponents-react/source/styles/smart.default.css'; import React from "react"; import ReactDOM from "react-dom"; import { ScrollBar } from 'smart-webcomponents-react/scrollbar'; class App extends React.Component { init() { const mediaSlider = document.getElementById('mediaSlider'), alarmSlider = document.getElementById('alarmSlider'), volumeSlider = document.getElementById('volumeSlider'), lowBatterySlider = document.getElementById('lowBatterySlider'), powerSaverSlider = document.getElementById('powerSaverSlider'); function setIcon(event) { let below = "", above = "", off = ""; const slider = event.target; switch (slider) { case mediaSlider: below = '<i class="material-icons"></i>'; above = '<i class="material-icons"></i>'; off = '<i class="material-icons"></i>'; break; case alarmSlider: below = above = '<i class="material-icons"></i>'; off = '<i class="material-icons"></i>'; break; case volumeSlider: below = '<i class="material-icons"></i>'; above = '<i class="material-icons"></i>'; off = '<i class="material-icons"></i>'; break; } if (slider.value === slider.min) { slider.previousElementSibling.innerHTML = off; } else if (slider.value < slider.max / 2) { slider.previousElementSibling.innerHTML = below; } else { slider.previousElementSibling.innerHTML = above; } } function setBatteryLevel(event) { const slider = event.target; if (slider === lowBatterySlider) { document.getElementById('lowBatteryAlert').textContent = slider.value.toString(); } else { document.getElementById('powerSaver').textContent = slider.value.toString(); } } mediaSlider.addEventListener('change', setIcon); alarmSlider.addEventListener('change', setIcon); volumeSlider.addEventListener('change', setIcon); lowBatterySlider.addEventListener('change', setBatteryLevel); powerSaverSlider.addEventListener('change', setBatteryLevel); } componentDidMount() { } render() { return ( <div> <section> <div> <h2>Scrollbars let users to select values by moving the scrollbar thumb.</h2> <div class="module"> <p>Scrollbars are ideal components for adjusting settings that reflect intensity levels, such as volume, brightness, or color saturation.</p> </div> </div> </section> <section id="continuousSliders"> <h2>Continuous scrollbar</h2> <div class="module"> <p>Use continuous scrollbars for subjective settings that do not require a specific value for the user to make meaningful adjustments.</p> </div> <div class="module continuousSliderLight"> <table> <tr> <td> <p>Normal</p> </td> </tr> <tr> <td> <ScrollBar ></ScrollBar> </td> </tr> <tr> <td> <ScrollBar max={100} value={50}></ScrollBar> </td> </tr> <tr> <td> <ScrollBar max={100} value={100}></ScrollBar> </td> </tr> <tr> <td> <p>Disabled</p> </td> </tr> <tr> <td> <ScrollBar disabled max={100}></ScrollBar> </td> </tr> <tr> <td> <ScrollBar disabled max={100} value={50}></ScrollBar> </td> </tr> <tr> <td> <ScrollBar disabled max={100} value={100}></ScrollBar> </td> </tr> </table> </div> </section> <section id="verticalSliders"> <h2>Orientation</h2> <div class="module"> <p>smartScrollBar can be horizontal or vertical depending on the orientation property.</p> </div> <div class="module"> <div> <ScrollBar max={100} value={50}></ScrollBar> <br /> <br /> <ScrollBar orientation="vertical" max={100} value={75}></ScrollBar> </div> <br /> <p>Vertical scrollbars</p> </div> </section> <section id="demoSliders"> <h2>Demo</h2> <div class="module"> <p>ScrollBars are controls that are used for adjusting values precisely.</p> </div> <div class="module media-controls"> <div> <h2>Volumes</h2> <div> <h3>Media volume</h3> <div id="mediaControl" class="controls"> <i class="material-icons"></i> <ScrollBar id="mediaSlider" max={100} value={25}></ScrollBar> </div> </div> <div> <h3>Alarm volume</h3> <div id="alarmControl" class="controls"> <i class="material-icons"></i> <ScrollBar id="alarmSlider" max={100} value={50}></ScrollBar> </div> </div> <div> <h3>Ring volume</h3> <div id="ringControl" class="controls"> <i class="material-icons"></i> <ScrollBar id="volumeSlider" max={100} value={75}></ScrollBar> </div> </div> </div> </div> <div class="module power-controls"> <div> <h2>Battery Saver Mode</h2> <div> <h3>Low battery alert on <b id="lowBatteryAlert">15</b> %</h3> <div id="mediaControl" class="controls"> <i class="material-icons"></i> <ScrollBar id="lowBatterySlider" max={100} value={15} scaleType="integer"></ScrollBar> </div> </div> <div> <h3>Power saver mode active on <b id="powerSaver">50</b>%</h3> <div id="alarmControl" class="controls"> <i class="material-icons"></i> <ScrollBar id="powerSaverSlider" max={100} value={50} scaleType="integer"></ScrollBar> </div> </div> </div> </div> </section> </div> ); } } ReactDOM.render(<App />, document.querySelector("#root")); export default App;
Running the React application
Start the app withnpm startand open localhost:3000 in your favorite web browser to see the output.
Read more about using Smart UI for React: https://www.htmlelements.com/docs/react/.
Getting Started with Vue ScrollBar Component
Setup Vue Environment
We will use vue-cli to get started. Let's install vue-cli
npm install -g @vue/cli
Then we can start creating our Vue.js projects with:
vue create my-project
Setup the ScrollBar
Open the "my-project" folder and run:
npm install smart-webcomponents
Setup with Vue 3.x
-
Make Vue ignore custom elements defined outside of Vue (e.g., using the Web Components APIs). Otherwise, it will throw a warning about an Unknown custom element, assuming that you forgot to register a global component or misspelled a component name.
Open src/main.js in your favorite text editor and change its contents to the following:
main.js
import { createApp } from 'vue' import App from './App.vue' const app = createApp(App) app.config.isCustomElement = tag => tag.startsWith('smart-'); app.mount('#app')
-
Open src/App.vue in your favorite text editor and change its contents to the following:
App.vue
<template> <div class="vue-root"> <smart-scroll-bar id="test" style></smart-scroll-bar> </div> </template> <script> import { onMounted } from "vue"; import "smart-webcomponents/source/styles/smart.default.css"; import "smart-webcomponents/source/modules/smart.scrollbar.js"; export default { name: "app", setup() { onMounted(() => { const mediaSlider = document.getElementById("mediaSlider"), alarmSlider = document.getElementById("alarmSlider"), volumeSlider = document.getElementById("volumeSlider"), lowBatterySlider = document.getElementById("lowBatterySlider"), powerSaverSlider = document.getElementById("powerSaverSlider"); function setIcon(event) { let below = "", above = "", off = ""; const slider = event.target; switch (slider) { case mediaSlider: below = '<i class="material-icons"></i>'; above = '<i class="material-icons"></i>'; off = '<i class="material-icons"></i>'; break; case alarmSlider: below = above = '<i class="material-icons"></i>'; off = '<i class="material-icons"></i>'; break; case volumeSlider: below = '<i class="material-icons"></i>'; above = '<i class="material-icons"></i>'; off = '<i class="material-icons"></i>'; break; } if (slider.value === slider.min) { slider.previousElementSibling.innerHTML = off; } else if (slider.value < slider.max / 2) { slider.previousElementSibling.innerHTML = below; } else { slider.previousElementSibling.innerHTML = above; } } function setBatteryLevel(event) { const slider = event.target; if (slider === lowBatterySlider) { document.getElementById( "lowBatteryAlert" ).textContent = slider.value.toString(); } else { document.getElementById( "powerSaver" ).textContent = slider.value.toString(); } } mediaSlider.addEventListener("change", setIcon); alarmSlider.addEventListener("change", setIcon); volumeSlider.addEventListener("change", setIcon); lowBatterySlider.addEventListener("change", setBatteryLevel); powerSaverSlider.addEventListener("change", setBatteryLevel); }); } }; </script> <style> /* fallback */ @font-face { font-family: "Material Icons"; font-style: normal; font-weight: 400; src: url(https://fonts.gstatic.com/s/materialicons/v31/2fcrYFNaTjcS6g4U3t-Y5ZjZjT5FdEJ140U2DJYC3mY.woff2) format("woff2"); } .material-icons { font-family: "Material Icons"; font-weight: normal; font-style: normal; font-size: inherit; line-height: 1; letter-spacing: normal; text-transform: none; display: inline-block; white-space: nowrap; word-wrap: normal; direction: ltr; -webkit-font-feature-settings: "liga"; -webkit-font-smoothing: antialiased; } smart-scroll-bar { width: 250px; height: 17px; } smart-scroll-bar[orientation="vertical"] { width: 17px; height: 250px; } </style>
We can now use the smart-scroll-bar with Vue 3. Data binding and event handlers will just work right out of the box.
Setup with Vue 2.x
-
Make Vue ignore custom elements defined outside of Vue (e.g., using the Web Components APIs). Otherwise, it will throw a warning about an Unknown custom element, assuming that you forgot to register a global component or misspelled a component name.
Open src/main.js in your favorite text editor and change its contents to the following:
main.js
import Vue from 'vue' import App from './App.vue' Vue.config.productionTip = false Vue.config.ignoredElements = [ 'smart-scroll-bar' ] new Vue({ render: h => h(App), }).$mount('#app')
-
Open src/App.vue in your favorite text editor and change its contents to the following:
App.vue
<template> <div class="smart-demo-container"> <smart-scroll-bar max="100" value="50"></smart-scroll-bar> <br> <smart-scroll-bar orientation="vertical" max="100" value="50"></smart-scroll-bar> </div> </template> <script> import "smart-webcomponents/source/smart.elements.js"; import "smart-webcomponents/source/styles/smart.default.css"; export default { name: "app" }; </script> <style> .smart-demo-container { margin: 0 !important; } smart-scroll-bar { width: 250px; height: 22px; } smart-scroll-bar[orientation="vertical"] { width: 22px; height: 250px; } </style>
We can now use the smart-scroll-bar with Vue. Data binding and event handlers will just work right out of the box.
We have bound the properties of the smart-scroll-bar to values in our Vue component.
Running the Vue application
Start the app withnpm run serveand open localhost:8080 in your favorite web browser to see the output below:
Read more about using Smart UI for Vue: https://www.htmlelements.com/docs/vue/.