DevExtreme React - Show and Hide Using the API

NOTE
In this article, the Button widget is used to demonstrate how to show and hide the LoadIndicator. This choice is made for purely demonstrational purposes, and you can do the same operations using another widget following the same guidelines.

To specify whether the LoadIndicator is shown, change the visible option.

jQuery
HTML
JavaScript
<div id="loadIndicatorContainer"></div>
<div id="buttonContainer"></div>
$(function() {
    var loadIndicator =  $("#loadIndicatorContainer").dxLoadIndicator({
        visible: false      
    }).dxLoadIndicator("instance");

    $("#buttonContainer").dxButton({
        text: "Toggle the LoadIndicator", 
        onClick: function () {
            var isLoadIndicatorVisible = loadIndicator.option("visible");
            loadIndicator.option("visible", !isLoadIndicatorVisible);
        } 
    });
});
Angular
HTML
TypeScript
<dx-load-indicator
    [(visible)]="isLoadIndicatorVisible">
</dx-load-indicator>
<dx-button
    text="Toggle the LoadIndicator"
    (onClick)="isLoadIndicatorVisible = !isLoadIndicatorVisible">
</dx-button>
import { DxLoadIndicatorModule, DxButtonModule } from "devextreme-angular";
// ...
export class AppComponent {
    isLoadIndicatorVisible: boolean = true;
}
@NgModule({
    imports: [
        // ...
        DxLoadIndicatorModule,
        DxButtonModule
    ],
    // ...
})
Vue
<template>
    <div>
        <DxLoadIndicator
            :visible.sync="isLoadIndicatorVisible"
        />
        <DxButton
            text="Toggle the LoadIndicator"
            @click="toggleLoadIndicator"
        />
    </div>
</template>

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

import { DxLoadIndicator } from 'devextreme-vue/load-indicator';
import { DxButton } from 'devextreme-vue/button';

export default {
    components: {
        DxLoadIndicator,
        DxButton
    },
    data() {
        return {
            isLoadIndicatorVisible: false
        };
    },
    methods: {
        toggleLoadIndicator(e) {
            this.isLoadIndicatorVisible = !this.isLoadIndicatorVisible;
        }
    }
}
</script>
React
import React from 'react';
import 'devextreme/dist/css/dx.common.css';
import 'devextreme/dist/css/dx.light.css';

import { LoadIndicator } from 'devextreme-react/load-indicator';
import { Button } from 'devextreme-react/button';

class App extends React.Component {
    constructor(props) {
        super(props);
        this.state = {
            isLoadIndicatorVisible: false
        };
        this.handleButtonClick = this.handleButtonClick.bind(this);
    }

    handleButtonClick() {
        const value = this.state.isLoadIndicatorVisible;

        this.setState({
            isLoadIndicatorVisible: !value
        });
    }

    render() {
        return (
            <div>
                <LoadIndicator
                    visible={this.state.isLoadIndicatorVisible}
                />
                <Button
                    text="Toggle the LoadIndicator"
                    onClick={this.handleButtonClick}
                />
            </div>
        );
    }
}

export default App;
ASP.NET MVC Controls
Razor C#
Razor VB
@(Html.DevExtreme().LoadIndicator()
    .ID("loadIndicator")
    .Visible(false)
)

@(Html.DevExtreme().Button()
    .ID("button")
    .Text("Toggle the LoadIndicator")
    .OnClick(@<text>
        function () {
            var loadIndicator = $("#loadIndicator").dxLoadIndicator("instance");
            var isLoadIndicatorVisible = loadIndicator.option("visible");
            loadIndicator.option("visible", !isLoadIndicatorVisible);
        } 
    </text>)
)
@(Html.DevExtreme().LoadIndicator() _
    .ID("loadIndicator") _
    .Visible(False)
)

@(Html.DevExtreme().Button() _
    .ID("button") _
    .Text("Toggle the LoadIndicator") _
    .OnClick("button_click")
)

<script>
    function button_click() {
        var loadIndicator = $("#loadIndicator").dxLoadIndicator("instance");
        var isLoadIndicatorVisible = loadIndicator.option("visible");
        loadIndicator.option("visible", !isLoadIndicatorVisible);
    }
</script>
See Also