Customize slider ticks label in Angular Range slider component

27 Apr 20244 minutes to read

Slider view can be customized via CSS. By overriding the slider CSS classes, you can customize the ticks. The ticks in slider allows you to easily identify the current value/values of the slider. It contains smallStep and largeStep. By default, slider has class e-tick for slider ticks. You can override the class as per your requirement.
Refer to the following code snippet to render ticks.

.e-scale .e-tick.e-custom::before {
    content: '\e967';
    position: absolute;
}

Here, the color for rendered ticks has been applied through nth-child(child_number). The color is
applied to the value of the child_number in the slider.

.e-scale :nth-child(1)::before {
    color: red;
}

app.component.ts

import { NgModule } from '@angular/core'
import { BrowserModule } from '@angular/platform-browser'
import { SliderModule } from '@syncfusion/ej2-angular-inputs'




import { Component, ViewEncapsulation, ViewChild} from '@angular/core';
import { SliderComponent } from '@syncfusion/ej2-angular-inputs';
import { SliderTickRenderedEventArgs, SliderTickEventArgs, Placement } from '@syncfusion/ej2-inputs';

@Component({
imports: [
        
        SliderModule
    ],


standalone: true,
    selector: 'my-app',
    template: `<div class="slider_container" id="slider_wrapper">
            <div class="slider_labelText userselect">Dynamic ticks color</div>
            <ejs-slider id='ticks_slider' [value]='value' [min]='min' [max]='max' [type]='type' [step]='step' [ticks]='ticks' (renderingTicks)='renderingTicks($event)' ></ejs-slider>
        </div>
        <div class="slider_container">
            <div class="slider_labelText userselect">Ticks with legends</div>
            <ejs-slider id='slider' [value]='value' [min]='min' [max]='max' [type]='type' [ticks]='slider_ticks' (renderedTicks)='renderedTicks($event)'></ejs-slider>
        </div>`,
    styleUrls : ["./app.component.css"],
    encapsulation: ViewEncapsulation.None
})

export class AppComponent {
    public count: number = 1;
    public value: number = 30;
    public min: number = 0;
    public max: number = 100;
    public step: number = 5;
    public type: string = 'MinRange';
    public ticks: Object = { placement: 'Before', largeStep: 20 };
    public slider_ticks: Object = { placement: 'Both', largeStep: 20, smallStep: 5 };
    public renderingTicks(args: SliderTickEventArgs) {
        if (args.tickElement.classList.contains('e-large')) {
            args.tickElement.classList.add('e-custom');
        }
    }
    public renderedTicks(args: SliderTickRenderedEventArgs) {
        let li: any = args.ticksWrapper.getElementsByClassName('e-large');
        let remarks: any = ['Very Poor', 'Poor', 'Average', 'Good', 'Very Good', 'Excellent'];
        for (let i: number = 0; i < li.length; ++i) {
            (li[i].querySelectorAll('.e-tick-both')[1] as HTMLElement).innerText = remarks[i];
        }
    }
}

main.ts

import { bootstrapApplication } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import 'zone.js';
bootstrapApplication(AppComponent).catch((err) => console.error(err));