Angular Slider Properties

Default Value: true

The UI component switches to the active state when users press down the primary mouse button. When this property is set to true, the CSS rules for the active state apply. You can change these rules to customize the component.

Use this property when you display the component on a platform whose guidelines include the active state change for UI components.

disabled

Specifies whether the UI component responds to user interaction.

Type:

Default Value: false

elementAttr

Specifies the global attributes to be attached to the UI component's container element.

Selector: dxo-element-attr

Type:

Object

Default Value: {}

jQuery

$(function(){
    $("#sliderContainer").dxSlider({
        // ...
        elementAttr: {
            id: "elementId",
            class: "class-name"
        }
    });
});

Angular

HTML

TypeScript

<dx-slider ...
    [elementAttr]="{ id: 'elementId', class: 'class-name' }">
</dx-slider>

import { DxSliderModule } from "devextreme-angular";
// ...
export class AppComponent {
    // ...
}
@NgModule({
    imports: [
        // ...
        DxSliderModule
    ],
    // ...
})

Vue

App.vue

<template>
    <DxSlider ...
        :element-attr="sliderAttributes">
    </DxSlider>
</template>

<script>
import DxSlider from 'devextreme-vue/slider';

export default {
    components: {
        DxSlider
    },
    data() {
        return {
            sliderAttributes: {
                id: 'elementId',
                class: 'class-name'
            }
        }
    }
}
</script>

React

App.js

import React from 'react';

import Slider from 'devextreme-react/slider';

class App extends React.Component {
    sliderAttributes = {
        id: 'elementId',
        class: 'class-name'
    }

    render() {
        return (
            <Slider ...
                elementAttr={this.sliderAttributes}>
            </Slider>
        );
    }
}
export default App;

focusStateEnabled

Specifies whether the UI component can be focused using keyboard navigation.

Type:

Default Value: true (desktop)

height

Specifies the UI component's height.

Type:

|

|

Return Value:

|

The UI component's height.

Default Value: undefined

This property accepts a value of one of the following types:

Number
The height in pixels.
String
A CSS-accepted measurement of height. For example, "55px", "20vh", "80%", "inherit".
Function (deprecated since v21.2)
Refer to the W0017 warning description for information on how you can migrate to viewport units.

hint

Specifies text for a hint that appears when a user pauses on the UI component.

Type:

String

Default Value: undefined

hoverStateEnabled

Specifies whether the UI component changes its state when a user pauses on it.

Type:

Default Value: true

isDirty

Specifies whether the component's current value differs from the initial value.

Type:

Default Value: false

This property is a read-only flag. You can use it to check if the editor value changed.

jQuery

index.js

$(() => {
    const slider = $('#slider').dxSlider({
        // ...
    }).dxSlider('instance');

    $('#button').dxButton({
        // ...
        onClick () {
            if (slider.option('isDirty')) {
                DevExpress.ui.notify("Do not forget to save changes", "warning", 500);
            }
        }
    });
});

Angular

app.component.ts

app.component.html

import { Component, ViewChild } from '@angular/core';
import { DxSliderComponent, DxButtonModule } from 'devextreme-angular';
import notify from 'devextreme/ui/notify';

@Component({
    selector: 'app-root',
    templateUrl: './app.component.html',
    styleUrls: ['./app.component.css']
})
export class AppComponent {
    @ViewChild('sliderRef', { static: false }) slider: DxSliderComponent;

    onClick () {
        if (this.slider.instance.option('isDirty')) {
            notify("Do not forget to save changes", "warning", 500);
        }
    }
}

<dx-slider ... 
    #sliderRef
>
</dx-slider>
<dx-button ...
    (onClick)="onClick($event)"
>
</dx-button>

Vue

App.vue

<template>
    <DxSlider ...
        :ref="sliderRef"
    >
    </DxSlider>
    <DxButton ...
        @click="onClick"
    />
</template>

<script>
import 'devextreme/dist/css/dx.light.css';
import DxSlider from 'devextreme-vue/slider';
import DxButton from 'devextreme-vue/button';
import notify from 'devextreme/ui/notify';

export default {
    components: {
        DxSlider,
        DxButton
    },

    data() {
        return {
            sliderRef
        }
    },

    methods: {
        onClick () {
            if (this.slider.option('isDirty')) {
                notify("Do not forget to save changes", "warning", 500);
            }
        }
    },

    computed: {
        slider: function() {
            return this.$refs[sliderRef].instance;
        }
    }
}
</script>

React

App.js

import React, { useRef } from 'react';
import Slider from 'devextreme-react/slider';
import Button from 'devextreme-react/button';
import 'devextreme/dist/css/dx.light.css';

const App = () => {
    const sliderRef = useRef(null);

    const onClick = () => {
        if (this.sliderRef.current.instance().option('isDirty')) {
            notify("Do not forget to save changes", "warning", 500);
        }
    };

    return (
        <Slider ...
            ref={sliderRef}
        >
        </Slider>
        <Button ...
            onClick={onClick}
        />
    );
};

export default App;

isValid

Specifies or indicates whether the editor's value is valid.

Type:

Default Value: true

NOTE

When you use async rules, isValid is true if the status is "pending" or "valid".

keyStep

Specifies the step by which a handle moves when a user presses Page Up or Page Down.

Type:

Default Value: 1

label

Configures the labels displayed at the min and max values.

Selector: dxo-label

Type:

Object

max

The maximum value the UI component can accept.

Type:

Default Value: 100

min

The minimum value the UI component can accept.

Type:

Default Value: 0

name

The value to be assigned to the name attribute of the underlying HTML element.

Type:

String

Default Value: ''

Specify this property if the UI component lies within an HTML form that will be submitted.

onContentReady

A function that is executed when the UI component is rendered and each time the component is repainted.

Type:

Function parameters:

e:

ContentReadyEvent

Information about the event.

Object structure:

Name	Type	Description
element	HTMLElement \| jQuery	The UI component's container. It is an HTML Element or a jQuery Element when you use jQuery.
component	Slider	The UI component's instance.

Name

Type

Description

element

HTMLElement | jQuery

The UI component's container. It is an HTML Element or a jQuery Element when you use jQuery.

component

Slider

The UI component's instance.

Default Value: null

onDisposing

A function that is executed before the UI component is disposed of.

Type:

Function parameters:

e:

DisposingEvent

Information about the event.

Object structure:

Name	Type	Description
element	HTMLElement \| jQuery	The UI component's container. It is an HTML Element or a jQuery Element when you use jQuery.
component	Slider	The UI component's instance.

Name

Type

Description

element

HTMLElement | jQuery

The UI component's container. It is an HTML Element or a jQuery Element when you use jQuery.

component

Slider

The UI component's instance.

Default Value: null

onInitialized

A function used in JavaScript frameworks to save the UI component instance.

Type:

Function parameters:

e:

InitializedEvent

Information about the event.

Object structure:

Name	Type	Description
element	HTMLElement \| jQuery	The UI component's container. It is an HTML Element or a jQuery Element when you use jQuery.
component	Slider	The UI component's instance.

Name

Type

Description

element

HTMLElement | jQuery

The UI component's container. It is an HTML Element or a jQuery Element when you use jQuery.

component

Slider

The UI component's instance.

Default Value: null

Angular

app.component.html

app.component.ts

<dx-slider ...
    (onInitialized)="saveInstance($event)">
</dx-slider>

import { Component } from "@angular/core";
import Slider from "devextreme/ui/data_grid";
// ...
export class AppComponent {
    sliderInstance: Slider;
    saveInstance (e) {
        this.sliderInstance = e.component;
    }
}

Vue

App.vue (Options API)

App.vue (Composition API)

<template>
    <div>
        <DxSlider ...
            @initialized="saveInstance">
        </DxSlider>
    </div>
</template>

<script>
import DxSlider from 'devextreme-vue/slider';

export default {
    components: {
        DxSlider
    },
    data: function() {
        return {
            sliderInstance: null
        };
    },
    methods: {
        saveInstance: function(e) {
            this.sliderInstance = e.component;
        }
    }
};
</script>

<template>
    <div>
        <DxSlider ...
            @initialized="saveInstance">
        </DxSlider>
    </div>
</template>

<script setup>
import DxSlider from 'devextreme-vue/slider';

let sliderInstance = null;

const saveInstance = (e) => {
    sliderInstance = e.component;
}
</script>

React

App.js

import Slider from 'devextreme-react/slider';

class App extends React.Component {
    constructor(props) {
        super(props);

        this.saveInstance = this.saveInstance.bind(this);
    }

    saveInstance(e) {
        this.sliderInstance = e.component;
    }

    render() {
        return (
            <div>
                <Slider onInitialized={this.saveInstance} />
            </div>
        );
    }
}

jQuery

Get a UI component Instance in jQuery

Angular

Get a UI component Instance in Angular

Vue

Get a UI component Instance in Vue

React

Get a UI component Instance in React

onOptionChanged

A function that is executed after a UI component property is changed.

Type:

Function parameters:

e:

OptionChangedEvent

Information about the event.

Object structure:

Name	Type	Description
value	any	The modified property's new value.
previousValue	any	The UI component's previous value.
name	String	The modified property if it belongs to the first level. Otherwise, the first-level property it is nested into.
fullName	String	The path to the modified property that includes all parent properties.
element	HTMLElement \| jQuery	The UI component's container. It is an HTML Element or a jQuery Element when you use jQuery.
component	Slider	The UI component's instance.

Default Value: null

The following example shows how to subscribe to component property changes:

jQuery

index.js

$(function() {
    $("#sliderContainer").dxSlider({
        // ...
        onOptionChanged: function(e) {
            if(e.name === "changedProperty") {
                // handle the property change here
            }
        }
    });
});

Angular

app.component.html

app.component.ts

app.module.ts

<dx-slider ...
    (onOptionChanged)="handlePropertyChange($event)"> 
</dx-slider>

import { Component } from '@angular/core'; 

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

export class AppComponent { 
    // ...
    handlePropertyChange(e) {
        if(e.name === "changedProperty") { 
            // handle the property change here
        }
    }
}

import { BrowserModule } from '@angular/platform-browser'; 
import { NgModule } from '@angular/core'; 
import { AppComponent } from './app.component'; 
import { DxSliderModule } from 'devextreme-angular'; 

@NgModule({ 
    declarations: [ 
        AppComponent 
    ], 
    imports: [ 
        BrowserModule, 
        DxSliderModule 
    ], 
    providers: [ ], 
    bootstrap: [AppComponent] 
}) 

export class AppModule { }

Vue

App.vue

<template> 
    <DxSlider ...
        @option-changed="handlePropertyChange"
    />            
</template> 

<script>  
import 'devextreme/dist/css/dx.light.css'; 
import DxSlider from 'devextreme-vue/slider'; 

export default { 
    components: { 
        DxSlider
    }, 
    // ...
    methods: { 
        handlePropertyChange: function(e) {
            if(e.name === "changedProperty") {
                // handle the property change here
            }
        }
    } 
} 
</script>

React

App.js

import React from 'react';  
import 'devextreme/dist/css/dx.light.css'; 

import Slider from 'devextreme-react/slider'; 

const handlePropertyChange = (e) => {
    if(e.name === "changedProperty") {
        // handle the property change here
    }
}

export default function App() { 
    return ( 
        <Slider ...
            onOptionChanged={handlePropertyChange}
        />        
    ); 
}

onValueChanged

A function that is executed after the UI component's value is changed.

Type:

Function parameters:

e:

ValueChangedEvent

Information about the event.

Object structure:

Name	Type	Description
value	Object	The UI component's new value.
previousValue	Object	The UI component's previous value.
event	Event (jQuery or EventObject)	The event that caused the function to execute. It is an EventObject or a jQuery.Event when you use jQuery. This field is undefined if the value is changed programmatically.
element	HTMLElement \| jQuery	The UI component's container. It is an HTML Element or a jQuery Element when you use jQuery.
component	Slider	The UI component's instance.

Default Value: null

readOnly

Specifies whether the editor is read-only.

Type:

Default Value: false

rtlEnabled

Switches the UI component to a right-to-left representation.

Type:

DataGrid Demo Navigation UI Demo Editors Demo

Default Value: false

When this property is set to true, the UI component text flows from right to left, and the layout of elements is reversed. To switch the entire application/site to the right-to-left representation, assign true to the rtlEnabled field of the object passed to the DevExpress.config(config) method.

JavaScript

DevExpress.config({
    rtlEnabled: true
});

showRange

Specifies whether to highlight the selected range.

Type:

Default Value: true

step

Specifies the step by which the UI component's value changes when a user drags a handler.

Type:

Default Value: 1

tabIndex

Specifies the number of the element when the Tab key is used for navigating.

Type:

Default Value: 0

The value of this property will be passed to the tabindex attribute of the HTML element that underlies the UI component.

tooltip

Configures a tooltip.

Selector: dxo-tooltip

Type:

Object

validationError

Information on the broken validation rule. Contains the first item from the validationErrors array.

Type: any

Default Value: null

validationErrors

An array of the validation rules that failed.

Type:

Array<any>

Default Value: null

validationMessageMode

Specifies how the message about the validation rules that are not satisfied by this editor's value is displayed.

Type:

ValidationMessageMode

Default Value: 'auto'

The following property values are possible:

auto
The tooltip with the message is displayed when the editor is in focus.
always
The tooltip with the message is not hidden when the editor loses focus.

validationMessagePosition

Specifies the position of a validation message relative to the component. The validation message describes the validation rules that this component's value does not satisfy.

Type:

Position

Default Value: 'bottom'

The following example positions a validation message at the component's right:

jQuery

index.js

$(function() {
    $("#sliderContainer").dxSlider({
        // ...
        validationMessagePosition: 'right'
    }).dxValidator({
        validationRules: [{
            type: 'required',
            message: 'Required',
        }],
    });
});

Angular

app.component.html

<dx-slider ...
    validationMessagePosition="right">
    <dx-validator>
        <dxi-validation-rule
            type="required"
            message="Required"
        >
        </dxi-validation-rule>
    </dx-validator>
</dx-slider>

Vue

App.vue

<template>
    <DxSlider ...
        validation-message-position="right"
    >
        <DxValidator>
            <DxRequiredRule message="Required" />
        </DxValidator>
    </DxSlider>
</template>

<script>
    // ...
</script>

React

App.js

import React from 'react';
// ...

function App() {
    return (
        <Slider ...
            validationMessagePosition="right"
        >
            <Validator>
                <RequiredRule message="Required" />
            </Validator>
        </Slider>
    ); 

};
export default App;

validationStatus

Indicates or specifies the current validation status.

Type:

ValidationStatus

Default Value: 'valid'

The following table illustrates the validation status indicators:

validationStatus	Indicator
`"pending"`
`"valid"`
`"invalid"`

When you assign "invalid" to validationStatus, you can also use the validationErrors array to set an error message as shown below:

jQuery

index.js

$(function() {
    const slider = $("#sliderContainer").dxSlider({
        // ...
    }).dxSlider("instance");

    function setInvalidStatus(message) {
        slider.option({
            validationStatus: "invalid",
            validationErrors: [{ message: message }]
        });
    }
});

Angular

app.component.html

app.component.ts

<dx-slider
    [validationStatus]="validationStatus"
    [validationErrors]="validationErrors">
</dx-slider>

// ...
export class AppComponent {
    validationStatus: string = "valid";
    validationErrors: any;
    // ...
    setInvalidStatus(message) {
        this.validationStatus = "invalid";
        this.validationErrors = [{ message: message }];
    }
}

Vue

App.vue

<template>
    <DxSlider ...
        :validation-status="validationStatus"
        :validation-errors="validationErrors"
    />
</template>

<script>
    // ...
    export default {
        // ...
        data() {
            return {
                validationStatus: "valid",
                validationErrors: []
            }
        },
        methods: {
            setInvalidStatus(message) {
                this.validationStatus = "invalid";
                this.validationErrors = [{ message: message }];
            }
        }
    }
</script>

React

App.js

import React, { useState } from 'react';
// ...

function App() {
    const [validationStatus, setValidationStatus] = useState("valid");
    const [validationErrors, setValidationErrors] = useState([]);

    const setInvalidStatus = message => {
        setValidationStatus("invalid");
        setValidationErrors([{ message: message }]);
    }

    return (
        <Slider
            validationStatus={validationStatus}
            validationErrors={validationErrors}
        />
    ); 

};
export default App;

value

The current slider value.

Type:

Slider Demo Demo RangeSlider Demo Demo

Default Value: 50

Raised Events: onValueChanged

View Demo

valueChangeMode

Specifies when to change the component's value.

Type:

SliderValueChangeMode

Default Value: 'onHandleMove'

If you want to change the component's value after a user releases the component's handle, set this property to onHandleRelease. The moment when the onValueChanged function is called depends on this property:

jQuery

index.js

$(function() {
    $("#sliderContainer").dxSlider({
        // ...
        valueChangeMode: 'onHandleRelease',
        onValueChanged: function (e) {
            const previousValue = e.previousValue;
            const newValue = e.value;
            // Event handling commands go here
        }
    });
});

Angular

app.component.html

app.component.ts

app.module.ts

<dx-slider
    [(value)]="value"
    valueChangeMode="onHandleRelease"
    (onValueChanged)="handleValueChange($event)">
</dx-slider>

import { Component } from '@angular/core';

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

export class AppComponent {
    value = 25;

    handleValueChange (e) {
        const previousValue = e.previousValue;
        const newValue = e.value;
        // Event handling commands go here
    };
}

import { BrowserModule } from '@angular/platform-browser';
import { NgModule } from '@angular/core';
import { AppComponent } from './app.component';

import { DxSliderModule } from 'devextreme-angular';

@NgModule({
    declarations: [
        AppComponent
    ],
    imports: [
        BrowserModule,
        DxSliderModule
    ],
    providers: [ ],
    bootstrap: [AppComponent]
})
export class AppModule { }

Vue

App.vue

<template>
    <DxSlider
        v-model:value="value"
        value-change-mode="onHandleRelease"
        @value-changed="handleValueChange"
    />
</template>

<script>
import 'devextreme/dist/css/dx.light.css';

import { DxSlider } from 'devextreme-vue/slider';

export default {
    components: {
        DxSlider
    },
    data() {
        return {
            value: 25
        };
    },
    methods: {
        handleValueChange(e) {
            const previousValue = e.previousValue;
            const newValue = e.value;
            // Event handling commands go here
        }
    }
}
</script>

React

App.js

import React, { useState, useCallback } from 'react';
import 'devextreme/dist/css/dx.light.css';

import { Slider } from 'devextreme-react/slider';

function App () {
    const [value, setValue] = useState(25);

    const handleValueChange = useCallback((e) => {
        const previousValue = e.previousValue;
        const newValue = e.value;
        // Event handling commands go here
        setValue(newValue);
    }, [value]);

    render() {
        return (
            <Slider
                value={value}
                valueChangeMode="onHandleRelease"
                onValueChanged={handleValueChange}
            />
        );
    }
}

export default App;

visible

Specifies whether the UI component is visible.

Type: