DevExtreme擁有高性能的HTML5 / JavaScript小部件集合，使您可以利用現(xiàn)代Web開發(fā)堆棧（包括React，Angular，ASP.NET Core，jQuery，Knockout等）構(gòu)建交互式的Web應(yīng)用程序，該套件附帶功能齊全的數(shù)據(jù)網(wǎng)格、交互式圖表小部件、數(shù)據(jù)編輯器等。

請注意：在開始本教程之前，請確保DevExtreme已安裝在Angular、Vue、React或jQuery應(yīng)用程序中。

DevExtreme v22.2正式版下載

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控制操作

默認(rèn)情況下，同一時刻只能有一個面板處于展開狀態(tài)，要改變這一點(diǎn)，將 和 屬性切換為true。

jQuery

JavaScript

$(function () {
$("#accordionContainer").dxAccordion({
// ...
// All panels may be collapsed
collapsible: true,
// Multiple panels may be expanded
multiple: true
});
});

Angular

HTML

<dx-accordion
[collapsible]="true" <!-- All panels may be collapsed -->
[multiple]="true"> <!-- Multiple panels may be expanded -->
</dx-accordion>

TypeScpipt

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

Vue

App.vue

<template>
<DxAccordion
:collapsible="true" <!-- All panels may be collapsed -->
:multiple="true"> <!-- Multiple panels may be expanded -->
</DxAccordion>
</template>
<script>
import 'devextreme/dist/css/dx.light.css';

import DxAccordion from "devextreme-vue/accordion";

export default {
components: {
DxAccordion
}
};
</script>

React

App.js

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

import { Accordion } from 'devextreme-react/accordion';

class App extends React.Component {
render() {
return (
<Accordion
collapsible={true} {/* All panels may be collapsed */}
multiple={true}> {/* Multiple panels may be expanded */}
</Accordion>
);
}
}

export default App;

鍵盤支持

最終用戶可以使用以下鍵與UI組件進(jìn)行交互。

您可以使用registerKeyHandler(key, handler)方法實(shí)現(xiàn)鍵的自定義處理程序。

jQuery

JavaScript

function registerKeyHandlers () {
const accordion = $("#accordionContainer").dxAccordion("instance");
accordion.registerKeyHandler("backspace", function(e) {
// The argument "e" contains information on the event
});
accordion.registerKeyHandler("space", function(e) {
// ...
});
}

Angular

TypeScpipt

import { ..., ViewChild, AfterViewInit } from '@angular/core';
import { DxAccordionModule, DxAccordionComponent } from 'devextreme-angular';
// ...
export class AppComponent implements AfterViewInit {
@ViewChild(DxAccordionComponent, { static: false }) accordion: DxAccordionComponent;
// Prior to Angular 8
// @ViewChild(DxAccordionComponent) accordion: DxAccordionComponent;

ngAfterViewInit () {
this.accordion.instance.registerKeyHandler('backspace', function(e) {
// The argument "e" contains information on the event
});
this.accordion.instance.registerKeyHandler('space', function(e) {
// ...
});
}
}
@NgModule({
imports: [
// ...
DxAccordionModule
],
// ...
})

Vue

<template>
<DxAccordion :ref="myAccordionRef" />
</template>
<script>
import 'devextreme/dist/css/dx.light.css';

import DxAccordion from 'devextreme-vue/accordion';

const myAccordionRef = 'my-accordion';

export default {
components: {
DxAccordion
},
data() {
return {
myAccordionRef
}
},
computed: {
accordion: function() {
return this.$refs[myAccordionRef].instance;
}
},
mounted: function() {
this.accordion.registerKeyHandler('backspace', function(e) {
// The argument "e" contains information on the event
});
this.accordion.registerKeyHandler('space', function(e) {
// ...
});
}
}
</script>

React

App.js

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

import { Accordion } from 'devextreme-react/accordion';

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

this.accordionRef = React.createRef();
}

render() {
return (
<Accordion ref={this.accordionRef} />
);
}

get accordion() {
return this.accordionRef.current.instance;
}

componentDidMount() {
this.accordion.registerKeyHandler('backspace', function(e) {
// The argument "e" contains information on the event
});
this.accordion.registerKeyHandler('space', function(e) {
// ...
});
}
}

export default App;