在項(xiàng)目中,前端傳給后臺(tái)的參數(shù)有:
pageSize:每頁(yè)的條數(shù)
pageNo:當(dāng)前頁(yè)碼
比如當(dāng)前是第1頁(yè),每頁(yè)20條,則后臺(tái)返回第1頁(yè)的20條記錄(sql應(yīng)該是用limit去獲取分頁(yè)數(shù)據(jù))
同時(shí),后臺(tái)接口還會(huì)返回列表的總條數(shù)totalNum,前端根據(jù)totaNum/pageSize計(jì)算總共有多少頁(yè)
如圖:

注意事項(xiàng):
需要先配置好路由(Angular2路由與導(dǎo)航)
使用步驟:
(1)在項(xiàng)目中引入分頁(yè)組件
// 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 {}(2)在頁(yè)面中使用分頁(yè)組件:
// demo.html<!--分頁(yè)組件參數(shù):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; // 保存頁(yè)面url參數(shù) public totalNum = 0; // 總數(shù)據(jù)條數(shù) public pageSize = 20;// 每頁(yè)數(shù)據(jù)條數(shù) public totalPage = 0;// 總頁(yè)數(shù) public curPage = 1;// 當(dāng)前頁(yè)碼 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('當(dāng)前頁(yè)面', vm.curPage); } } else { vm.params = {}; } } getPageData(pageNo) { let vm = this; vm.curPage = pageNo; console.log('觸發(fā)', pageNo); }}分頁(yè)組件源碼:
page.html
<!--分頁(yè)組件--><div class="col-md-12 text-right margin-bottom" *ngIf="pageParams.totalPage>1 && pageParams.totalNum>0"> <a class="pull-left text-sm">總計(jì) {{pageParams.totalNum}} 條,第 {{pageParams.curPage}} / {{pageParams.totalPage}} 頁(yè)</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">上一頁(yè)</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">下一頁(yè)</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>page.ts
import { Component,Input, Output,EventEmitter } from '@angular/core';@Component({ selector: 'page', templateUrl: './page.html'})export class Page { @Input('pageParams') pageParams;// 父組件向子組件傳值 @Output() changeCurPage:EventEmitter<Number> = new EventEmitter;// 子組件向父組件廣播事件,觸發(fā)改變當(dāng)前頁(yè)面的事件 public pageList = [1, 2, 3, 4, 5]; public totalPage = 5; constructor() { let vm = this; //console.log('從父組件獲取的參數(shù)', vm['pageParams']); } getPageList(pageParams) { /*分頁(yè)設(shè)置*/ let pageList=[]; if (pageParams.totalPage <= 5) {//如果總的頁(yè)碼數(shù)小于5(前五頁(yè)),那么直接放進(jìn)數(shù)組里顯示 for (let i = 0; i < pageParams.totalPage; i++) { pageList.push({ pageNo: i + 1 }); } } else if (pageParams.totalPage - pageParams.curPage < 5 && pageParams.curPage > 4) {//如果總的頁(yè)碼數(shù)減去當(dāng)前頁(yè)碼數(shù)小于5(到達(dá)最后5頁(yè)),那么直接計(jì)算出來(lái)顯示 pageList = [ { pageNo: pageParams.curPage - 4 }, { pageNo: pageParams.curPage - 3 }, { pageNo: pageParams.curPage - 2 }, { pageNo: pageParams.curPage - 1 }, { pageNo: pageParams.curPage } ]; } else {//在中間的頁(yè)碼數(shù) 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('修改頁(yè)碼', pageNo); vm.pageParams.curPage = pageNo; vm.changeCurPage.emit(vm.pageParams.curPage); }}ng2還在入門(mén)中,組件有待完善,請(qǐng)多多指教
項(xiàng)目demo:https://github.com/youzouzou/ng2-paginator
源碼下載:http://xiazai.VeVB.COm/201704/yuanma/ng2-paginator-master_jb51.rar
以上就是本文的全部?jī)?nèi)容,希望本文的內(nèi)容對(duì)大家的學(xué)習(xí)或者工作能帶來(lái)一定的幫助,同時(shí)也希望多多支持武林網(wǎng)!
新聞熱點(diǎn)
疑難解答
圖片精選
網(wǎng)友關(guān)注