如何向div添加分页功能。
app.component.html
<div>
<div *ngFor="let clg of colleges$">
<h3>{{clg.name}}</h3>
</div>
<mat-paginator [length]="100" [pageSize]="10" [pageSizeOptions]="[5, 10, 25,
100]"></mat-paginator>
</div>
答案 0 :(得分:2)
<div>
<div ngFor="let item of items| slice: (page-1)*pagesize : page* pagesize; index as i;">
<div *ngIf="page==1" scope="row">{{i+1}}</div>
<div scope="row" *ngIf="page>1">{{((page-1)*pagesize)+(i+1)}}</div>
<div>{{item}}</div>
</div>
</div>
<ngb-pagination [collectionSize]="totalItems" [(page)]="page" [(pageSize)]="pagesize" [rotate]="true">
</ngb-pagination>
答案 1 :(得分:0)
您应该使用延迟加载来加载数据。
为此,您首先需要在json文件中获取记录的总长度并设置[length]="totalLength"
。然后,mat-paginator将基于totalLength自动为您设置页面。然后,您应该加载前10个数据(即0到10)并将其分配给colleges $。我说10是因为它是[pageSize]
。如果您的pageSize为5,则加载前5个数据,依此类推。然后,当用户单击页码(例如2)时,您应该调用api,它应该返回下一组数据,即11到20,并将其分配给colleges $。数据将在视图中自动刷新。
最好创建一个API,该API将在您传递2个参数(偏移量和限制)时为您获取数据,偏移量和限制是您所用的页面大小。分页器中有多种方法(功能),它们会在pageSize更改或用户单击页码时触发
答案 2 :(得分:0)
我将使用mat-paginator的(page)
获取选定的值,然后根据该值过滤或拼接数组:
HTML代码:
<div *ngFor="let clg of filteredArray">
<h3>{{clg.name}}</h3>
</div>
<mat-paginator [length]="100" [pageSize]="defaultRecords" [pageSizeOptions]="[5, 10, 25, 100]" (page)="pageEvent = $event; onPaginateChange($event)">
</mat-paginator>
TS代码:
import { Component, OnInit, ViewChild } from '@angular/core';
import { MatPaginator, MatTableDataSource } from '@angular/material';
/**
* @title Paginator
*/
@Component({
selector: 'paginator-overview-example',
templateUrl: 'paginator-overview-example.html',
styleUrls: ['paginator-overview-example.css'],
})
export class PaginatorOverviewExample implements OnInit {
colleges: any[] = [{ name: "1" }, { name: "2" }, { name: "3" }, { name: "4" }, { name: "5" }, { name: "6" }, { name: "7" }, { name: "8" }, { name: "9" }, { name: "10" }, { name: "11" }, { name: "12" }, { name: "13" }];
filteredArray: any[] = []
defaultRecords: any = 5;
ngOnInit() {
this.filteredArray = this.colleges.slice(0, this.defaultRecords);
}
onPaginateChange(data) {
this.filteredArray = this.colleges.slice(0, data.pageSize);
}
}
答案 3 :(得分:0)
您可以将page
上的mat-paginator
事件发射器用作(page)="onPageChange($event)"
<div *ngFor="let item of currentItemsToShow, let i=index;">Hello {{item.name}}</div>
onPageChange($event) {
this.currentItemsToShow = this.items.slice($event.pageIndex*$event.pageSize,
$event.pageIndex*$event.pageSize + $event.pageSize);
}
Stackblitz Demo showing Customized Paginatior, try changing paginator values