如何在Angular中使用jQuery? [英] How to use jQuery with Angular?

问题描述

任何人都可以告诉我，如何在 Angular 中使用 jQuery 吗?

Can anyone tell me, how to use jQuery with Angular?

class MyComponent {
    constructor() {
        // how to query the DOM element from here?
    }
}

我知道有一些变通方法，例如预先处理DOM元素的 class 或 id ，但我希望有一种更清洁的方法. /p>

I'm aware there are workarounds like manipulating the class or id of the DOM element upfront, but I'm hoping for a cleaner way of doing it.

推荐答案

与ng1相比，使用来自Angular2的jQuery轻而易举.如果您使用的是TypeScript，则可以先引用jQuery打字稿定义.

Using jQuery from Angular2 is a breeze compared to ng1. If you are using TypeScript you could first reference jQuery typescript definition.

tsd install jquery --save
or
typings install dt~jquery --global --save

不需要

TypescriptDefinitions，因为您可以将any用作$或jQuery

在角度组件中，应使用@ViewChild()从模板引用DOM元素.初始化视图后，可以使用此对象的nativeElement属性，并将其传递给jQuery.

In your angular component you should reference a DOM element from the template using @ViewChild() After the view has been initialized you can use the nativeElement property of this object and pass to jQuery.

将$(或jQuery)声明为JQueryStatic将为您提供对jQuery的类型化引用.

Declaring $ (or jQuery) as JQueryStatic will give you a typed reference to jQuery.

import {bootstrap}    from '@angular/platform-browser-dynamic';
import {Component, ViewChild, ElementRef, AfterViewInit} from '@angular/core';
declare var $:JQueryStatic;

@Component({
    selector: 'ng-chosen',
    template: `<select #selectElem>
        <option *ngFor="#item of items" [value]="item" [selected]="item === selectedValue">{{item}} option</option>
        </select>
        <h4> {{selectedValue}}</h4>`
})
export class NgChosenComponent implements AfterViewInit {
    @ViewChild('selectElem') el:ElementRef;
    items = ['First', 'Second', 'Third'];
    selectedValue = 'Second';

    ngAfterViewInit() {
        $(this.el.nativeElement)
            .chosen()
            .on('change', (e, args) => {
                this.selectedValue = args.selected;
            });
    }
}

bootstrap(NgChosenComponent);

此示例可在plunker上使用: http://plnkr.co/edit/Nq9LnK?p=preview

This example is available on plunker: http://plnkr.co/edit/Nq9LnK?p=preview

tslint将抱怨chosen不是$的属性，要解决此问题，您可以在自定义* .d.ts文件的JQuery接口中添加一个定义

tslint will complain about chosen not being a property on $, to fix this you can add a definition to the JQuery interface in your custom *.d.ts file

interface JQuery {
    chosen(options?:any):JQuery;
}    

这篇关于如何在Angular中使用jQuery?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！