Accessibility in Vue Range slider component
16 Mar 20236 minutes to read
The Slider is characterized with complete ARIA Accessibility support that helps to access by on-screen readers and other assistive technology devices. This component is designed with the reference of guidelines document given in the WAI ARAI Accessibility Practices.
The Slider component uses the Slider
role and the following ARIA properties for its element based on the state.
Property | Functionalities |
---|---|
aria-valuenow | It Indicates the current value of the slider. |
aria-valuetext | Returns the current text of the slider. |
aria-valuemin | It Indicates the Minimum value of the slider. |
aria-valuemax | It Indicates the Maximum value of the slider. |
aria-orientation | It Indicates the Slider Orientation. |
aria-label | Slider left and right button label text (increment and decrement). |
aria-labelledby | It indicates the name of the Slider. |
Keyboard interaction
The Keyboard interaction of the Slider component is designed based on the WAI-ARIA Practices described for Slider. Users can use the following shortcut keys to interact with the Slider.
Keyboard shortcuts | Actions |
Right Arrow | Up Arrow | Increase the Slider value. |
Left Arrow | Down Arrow | Decrease the Slider value. |
Home | Moves to the start value (for Range Slider when the second thumb is focused and the Home key is pressed, it moves to the first thumb value). |
End | Moves to the end value (for Range Slider when the first thumb is focused and the End key is pressed, it moves to the second thumb value). |
Page Up | Increases the Slider by `largeStep` value. |
Page Down | Decreases the Slider by `largeStep` value. |
<template>
<div id="app">
<div >
<div class='label'>Slider without formatted values</div>
<ejs-slider id='slider1' :value='value' :tooltip="tooltip" :ticks="ticks" :step="step" :type="type" :showButtons="showButtons"> </ejs-slider>
</div>
<div class="sliderwrapper">
<div class='label'>Slider with formatted values</div>
<ejs-slider id='slider2' :tooltip="wktooltip" :ticks="wkticks" :step="wkstep" :max="wkmax" :min="wkmin" :renderingTicks="renderingTicks" :tooltipChange="tooltipChange"> </ejs-slider>
</div>
</div>
</template>
<script>
import Vue from "vue";
import { SliderPlugin } from "@syncfusion/ej2-vue-inputs";
Vue.use(SliderPlugin);
export default {
data() {
return {
ticks: { placement: 'After', largeStep: 20, smallStep: 10, showSmallTicks: true },
tooltip: { placement: 'Before', isVisible: true, showOn: 'Always' },
value: 30,
step: 10,
type: 'MinRange',
showButtons: true,
wkmin: 0, wkmax: 6, wkstep: 1,
// Assigning ticks data
wkticks: { placement: 'After', largeStep: 1 },
// Assigning tooltip data
wktooltip: {
placement: 'Before',
isVisible: true,
}
};
},
methods: {
renderingTicks: function (args) {
// Weekdays Array
var daysArr = ['Sunday','Monday','Tuesday','Wednesday','Thrusday','Friday','Saturday'];
// Customizing each ticks text into weeksdays
args.text = daysArr[parseFloat(args.value)];
},
tooltipChange: function (args) {
// Customizing tooltip to display the Day (in numeric) of the week
args.text = 'Day ' + (Number(args.value) + 1).toString();
}
}
}
</script>
<style>
@import "../node_modules/@syncfusion/ej2-base/styles/material.css";
@import "../node_modules/@syncfusion/ej2-vue-buttons/styles/material.css";
@import "../node_modules/@syncfusion/ej2-vue-popups/styles/material.css";
@import "../node_modules/@syncfusion/ej2-vue-inputs/styles/material.css";
#app {
height: 40px;
left: 30%;
position: absolute;
top: 40%;
width: 50%;
}
.sliderwrapper{
padding-top:50px;
}
</style>