const tagBox = $('#tagBoxContainer').dxTagBox('instance');

tagBox.registerKeyHandler('backspace', function(e) {
    // The argument 'e' contains information about the event
});
tagBox.registerKeyHandler('space', function(e) {
    // ...
});

import { ViewChild, AfterViewInit } from '@angular/core';
import { DxTagBoxComponent } from 'devextreme-angular/ui/tag-box';

@Component({
    imports: [DxTagBoxComponent],
    // ...
})
export class AppComponent implements AfterViewInit {
    @ViewChild(DxTagBoxComponent, { static: false }) tagBox!: DxTagBoxComponent;
    // Prior to Angular 8
    // @ViewChild(DxTagBoxComponent) tagBox: DxTagBoxComponent;

    ngAfterViewInit () {
        this.tagBox.instance.registerKeyHandler('backspace', function(e) {
            // The argument "e" contains information about the event
        });
        this.tagBox.instance.registerKeyHandler('space', function(e) {
            // ...
        });
    }
}

<template>
    <DxTagBox ref="tagBoxRef" />
</template>

<script setup lang="ts">
import { onMounted, ref } from 'vue';
import { DxTagBox } from 'devextreme-vue/tag-box';

const tagBoxRef = ref<DxTagBox | null>(null);

onMounted(() => {
    tagBoxRef.value.instance.registerKeyHandler('backspace', function(e) {
        // The argument "e" contains information about the event
    });
    tagBoxRef.value.instance.registerKeyHandler('space', function(e) {
        // ...
    });
})

</script>

import React, { useRef, useEffect } from 'react';
import { TagBox, type TagBoxRef } from 'devextreme-react/tag-box';

function App() {
    const tagBoxRef = useRef<TagBoxRef>(null);

    useEffect(() => {
        const tagBox = tagBoxRef.current.instance();
        tagBox.registerKeyHandler('backspace', function(e) {
            // The argument "e" contains information about the event
        });
        tagBox.registerKeyHandler('space', function(e) {
            // ...
        });
    }, []);

    return (
        <TagBox ref={tagBoxRef} />
    );
}