Angular2自定义分页组件

// app.module.tsimport { BrowserModule } from '@angular/platform-browser';import { NgModule } from '@angular/core';import { FormsModule } from '@angular/forms';import { HttpModule } from '@angular/http';import { AppComponent } from './app.component';import { RouterModule }  from '@angular/router';import { Demo }  from './demo/demo';import { Page }  from './page/page';@NgModule({ declarations: [  AppComponent,  Demo,  Page ], imports: [  BrowserModule,  FormsModule,  RouterModule.forRoot([   {    path: 'demo',    component: Demo   }  ]),  HttpModule ], providers: [], bootstrap: [AppComponent]})export class AppModule {}

// demo.html<!--分页组件参数：pageSize,totalNum,curPage,totalPage--><page-template [pageParams]="{pageSize:20,totalNum:100,curPage:1,totalPage:5}" (changeCurPage)="getPageData($event)"></page-template>// demo.tsimport { Component } from '@angular/core';import { Location } from '@angular/common';import { Router } from '@angular/router';@Component({ selector: 'demo', templateUrl: './demo.html'})export class Demo { public params; // 保存页面url参数 public totalNum = 0; // 总数据条数 public pageSize = 20;// 每页数据条数 public totalPage = 0;// 总页数 public curPage = 1;// 当前页码 constructor(location:Location) {  let vm = this;  if (vm.params) {   vm.params = vm.params.replace('?', '').split('&');   let theRequest = [];   for (let i = 0; i < vm.params.length; i++) {    theRequest[vm.params[i].split("=")[0]] = vm.params[i].split("=")[0] == 'pageNo' ? parseInt(vm.params[i].split("=")[1]) : vm.params[i].split("=")[1];   }   vm.params = theRequest;   if (vm.params['pageNo']) {    vm.curPage = vm.params['pageNo'];    //console.log('当前页面', vm.curPage);   }  } else {   vm.params = {};  } } getPageData(pageNo) {  let vm = this;  vm.curPage = pageNo;  console.log('触发', pageNo); }}

<!--分页组件--><div class="col-md-12 text-right margin-bottom" *ngIf="pageParams.totalPage>1 && pageParams.totalNum>0"> <a class="pull-left text-sm">总计 {{pageParams.totalNum}} 条，第 {{pageParams.curPage}} / {{pageParams.totalPage}} 页</a> <button class="btn btn-default previous" [routerLink]="['./']" [disabled]="pageParams.curPage<=5"     (click)="changePage(pageParams.curPage-5)" [queryParams]="{pageNo:pageParams.curPage-5}"><<</button> <button class="btn btn-default next" [routerLink]="['./']" (click)="changePage(pageParams.curPage-1)"     [queryParams]="{pageNo:pageParams.curPage-1}" [disabled]="pageParams.curPage==1">上一页</button> <button class="btn btn-default" [routerLink]="['./']" [disabled]="pageParams.curPage==page.pageNo"     (click)="changePage(page.pageNo)" [queryParams]="page" *ngFor="let page of getPageList(pageParams)">  {{page.pageNo}} </button> <button class="btn btn-default next" [routerLink]="['./']" (click)="changePage(pageParams.curPage-(-1))"     [queryParams]="{pageNo:pageParams.curPage-(-1)}" [disabled]="pageParams.curPage==pageParams.totalPage">下一页</button> <button class="btn btn-default previous" [routerLink]="['./']" [disabled]="pageParams.totalPage-pageParams.curPage<=5"     (click)="changePage(pageParams.curPage-(-5))" [queryParams]="{pageNo:pageParams.curPage-(-5)}">>></button></div><div class="col-md-12 text-center text-sm text-dark-gray" *ngIf="!pageParams.totalNum"> 空空如也</div>

import { Component,Input, Output,EventEmitter } from '@angular/core';@Component({ selector: 'page', templateUrl: './page.html'})export class Page { @Input('pageParams') pageParams;// 父组件向子组件传值 @Output() changeCurPage:EventEmitter<Number> = new EventEmitter;// 子组件向父组件广播事件，触发改变当前页面的事件 public pageList = [1, 2, 3, 4, 5]; public totalPage = 5; constructor() {  let vm = this;  //console.log('从父组件获取的参数', vm['pageParams']); } getPageList(pageParams) {  /*分页设置*/  let pageList=[];  if (pageParams.totalPage <= 5) {//如果总的页码数小于5（前五页），那么直接放进数组里显示   for (let i = 0; i < pageParams.totalPage; i++) {    pageList.push({     pageNo: i + 1    });   }  } else if (pageParams.totalPage - pageParams.curPage < 5 && pageParams.curPage > 4) {//如果总的页码数减去当前页码数小于5（到达最后5页），那么直接计算出来显示   pageList = [    {     pageNo: pageParams.curPage - 4    }, {     pageNo: pageParams.curPage - 3    }, {     pageNo: pageParams.curPage - 2    }, {     pageNo: pageParams.curPage - 1    }, {     pageNo: pageParams.curPage    }   ];  } else {//在中间的页码数   let cur = Math.floor((pageParams.curPage - 1) / 5) * 5 + 1;   pageList = [    {     pageNo: cur    }, {     pageNo: cur + 1    }, {     pageNo: cur + 2    }, {     pageNo: cur + 3    }, {     pageNo: cur + 4    },   ];  }  return pageList; } changePage(pageNo) {  let vm = this;  //console.log('修改页码', pageNo);  vm.pageParams.curPage = pageNo;  vm.changeCurPage.emit(vm.pageParams.curPage); }}