详解angular2采用自定义指令（Directive）方式加载jquery插件

import { Directive, Output, Input, ElementRef, EventEmitter } from '@angular/core';

// 引入jquery.daterangepicker插件相关JS和css,Css打包时需要打包成单个文件，或者直接在html单独引用
// 如何单独打包请看下节代码

require('../../../../assets/lib/bootstrap-daterangepicker-master/daterangepicker.js');
require('../../../../assets/lib/bootstrap-daterangepicker-master/daterangepicker.css');

// 自定义指令
@Directive({
 selector: '[dateRangePicker]',
})

export class DateRangePicker {

 /**
  * jquery.daterangepicker插件所需的参数
  * 参数:http://www.daterangepicker.com/#options
  */
 @Input() public dateRangePickerOptions: IJQueryDateRangePicker;

 // 选中事件
 @Output() selected: any = new EventEmitter();

 /**
  * 初始化
  * @param _elementRef
  */
 constructor(private _elementRef: ElementRef) {
 }

 /**
  * 属性发生更改时
  * @private
  */
 ngOnChanges() {
  $(this._elementRef.nativeElement).daterangepicker(this.dateRangePickerOptions, this.dateCallback.bind(this));
 }

 /**
  * 时间发生更改时使用emit传递事件
  * @private
  */
 dateCallback(start, end) {
  let format = "YYYY-MM-DD";
  if (this.dateRangePickerOptions.locale.format) {
   format = this.dateRangePickerOptions.locale.format;
  }
  let date = {
   startDate: start.format(format),
   endDate: end.format(format),
  }

  this.selected.emit(date);
 }

}

import { Component } from '@angular/core';
import { DateRangePicker } from '../../theme/directives';


@Component({
 selector: 'dashboard',
 template: `
   <div class="form-group">
        <label for="startDate">{date.startDate}</label>
        <input 
        dateRangePicker 
        [dateRangePickerOptions]="option"    
        (selected)="dateSelected($event)" 
        type="text" 
        class="form-control">
   </div>
 `,
 directives: [DateRangePicker]
})
export class Dashboard {

 /**
  * 当前选中的时间
  */
 public date: any

 /**
  * jquery时间插件参数
  */
 private option: Object = {
  locale: {
   format: "YYYY-MM-DD",
   separator: " 至 ",
   applyLabel: "确定",
   cancelLabel: '取消',
   fromLabel: '起始时间',
   toLabel: '结束时间',
   customRangeLabel: '自定义',
   daysOfWeek: ['日', '一', '二', '三', '四', '五', '六'],
   monthNames: ['一月', '二月', '三月', '四月', '五月', '六月',
    '七月', '八月', '九月', '十月', '十一月', '十二月'],
   firstDay: 1
  },
 };

 constructor() {
 }

 /**
  * emit回调事件，获取选中时间
  * @param date
  */
 dateSelected(date) {
  this.date = date;
 }
}

// 采用ExtractTextPlugin单独对jquery插件进行css打包
loaders: [{
    test: /daterangepicker\.css$/,
    loader: ExtractTextPlugin.extract('style-loader', 'css-loader')
   }]

plugins: [
     new ExtractTextPlugin('[name].css', {
      allChunks: true
     })]