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Angular PrimeNG表分页器

Angular PrimeNG表分页器

Angular PrimeNG是一个用Angular制作Web应用程序的UI工具包。它由数百个预置组件组成，使开发人员能够在更短的时间内轻松创建一个漂亮的、响应式的网络解决方案。在这篇文章中，我们将看到Angular PrimeNG Table Paginator。

表组件是用来以表格形式显示一些数据的。当有大量的行，并且不能在一次显示时，就会在表中使用分页。分页可以通过将表的分页器属性设置为true和使用rows属性设置单页显示的行数来启用。

语法:

<p-table [value]="companyProfiles" 
    [paginator]="true"
    [rows]="4"
    [columns]="columns">
    <ng-template pTemplate="header" let-columns>
        <tr>
            <th *ngFor="let column of columns">
                {{column.name}}
            </th>
        </tr>
    </ng-template>
    <ng-template pTemplate="body" 
        let-rowData 
        let-columns="columns">
        <tr>
            <td *ngFor="let column of columns">
                {{rowData[column.field]}}
            </td>
        </tr>
    </ng-template>
</p-table>
HTML

创建Angular应用程序并安装模块：

第1步：使用以下命令创建一个Angular应用程序。

ng new myapp
JavaScript

第2步：创建你的项目文件夹即myapp后，使用以下命令移动到它。

cd myapp
JavaScript

第3步在你给定的目录中安装PrimeNG。

npm install primeng --save
npm install primeicons --save
JavaScript

项目结构：完成上述步骤后，项目结构将如下所示。

Angular PrimeNG表分页器

Project Structure

示例1：本例通过将分页器属性设置为true，行数属性设置为4，展示了对表格分页器的简单使用。

<div style="text-align: center">
    <h2 style="color: green">GeeksforGeeks</h2>
    <h4>Angular PrimeNG Table Paginator</h4>
  
    <p-table 
        [value]="companyProfiles"
        [paginator]="true"
        [rows]="4" 
        [columns]="columns">
        <ng-template pTemplate="header" let-columns>
            <tr>
                <th 
                    *ngFor="let column of columns">
                    {{column.name}}
                </th>
            </tr>
        </ng-template>
        <ng-template 
            pTemplate="body" 
            let-rowData 
            let-columns="columns">
            <tr>
                <td *ngFor="let column of columns">
                    {{rowData[column.field]}}
                </td>
            </tr>
        </ng-template>
    </p-table>
</div>
HTML
import { Component } from '@angular/core';
  
interface CompanyProfile {
    name: String;
    sector: String;
    thisYearSales: String;
    lastYearSales: String;
    thisYearGrowth: String;
    lastYearGrowth: String;
}
  
@Component({
    selector: 'app-root',
    templateUrl: './app.component.html',
})
  
export class AppComponent {
    companyProfiles: CompanyProfile[] = [];
    columns: any[] = [
        {
            name: "Sector",
            field: "sector",
        },
        {
            name: "Company",
            field: "name",
        },
        {
            name: "This Year Sales",
            field: "thisYearSales",
        },
        {
            name: "Last Year Sales",
            field: "lastYearSales",
        },
    ];
  
    ngOnInit() {
        this.companyProfiles = [
            {
                name: "Apple",
                sector: "Technology",
                thisYearSales: "2,000,000,000",
                lastYearSales: " 1,700,000,000",
                thisYearGrowth: "21%",
                lastYearGrowth: "15%",
            },
            {
                name: "Mac Donalds",
                sector: "Food",
                thisYearSales: "1,100,000,000",
                lastYearSales: " 800,000,000",
                thisYearGrowth: "18%",
                lastYearGrowth: "15%",
            },
            {
                name: "Google",
                sector: "Technology",
                thisYearSales: "1,800,000,000",
                lastYearSales: " 1,500,000,000",
                thisYearGrowth: "15%",
                lastYearGrowth: "13%",
            },
            {
                name: "Domino's",
                sector: "Food",
                thisYearSales: "1,000,000,000",
                lastYearSales: " 800,000,000",
                thisYearGrowth: "13%",
                lastYearGrowth: "14%",
            },
            {
                name: "Meta",
                sector: "Technology",
                thisYearSales: "1,100,000,000",
                lastYearSales: " 1,200,000,000",
                thisYearGrowth: "11%",
                lastYearGrowth: "12%",
            },
            {
                name: "Snapchat",
                sector: "Technology",
                thisYearSales: "1,500,000,000",
                lastYearSales: " 1,200,000,000",
                thisYearGrowth: "16%",
                lastYearGrowth: "14%",
            },
            {
                name: "Tesla",
                sector: "AutoMobile",
                thisYearSales: "1,300,000,000",
                lastYearSales: " 900,000,000",
                thisYearGrowth: "23%",
                lastYearGrowth: "16%",
            },
            {
                name: "Ford",
                sector: "AutoMobile",
                thisYearSales: "700,000,000",
                lastYearSales: " 750,000,000",
                thisYearGrowth: "14%",
                lastYearGrowth: "15%",
            },
            {
                name: "Twitter",
                sector: "Technology",
                thisYearSales: "1,200,000,000",
                lastYearSales: " 1,200,000,000",
                thisYearGrowth: "19%",
                lastYearGrowth: "18%",
            },
            {
                name: "Reliance Jio",
                sector: "Telecom",
                thisYearSales: "800,000,000",
                lastYearSales: " 800,000,000",
                thisYearGrowth: "13%",
                lastYearGrowth: "13%",
            },
            {
                name: "H&M",
                sector: "Clothing",
                thisYearSales: "1,600,000,000",
                lastYearSales: " 1,400,000,000",
                thisYearGrowth: "17%",
                lastYearGrowth: "16%",
            },
            {
                name: "Nike",
                sector: "Sports",
                thisYearSales: "2,200,000,000",
                lastYearSales: " 2,400,000,000",
                thisYearGrowth: "18%",
                lastYearGrowth: "22%",
            },
            {
                name: "Adidas",
                sector: "Sports",
                thisYearSales: "2,300,000,000",
                lastYearSales: " 2,100,000,000",
                thisYearGrowth: "24%",
                lastYearGrowth: "21%",
            },
            {
                name: "Red Chief",
                sector: "Clothing",
                thisYearSales: "800,000,000",
                lastYearSales: " 600,000,000",
                thisYearGrowth: "19%",
                lastYearGrowth: "15%",
            },
        ];
    }
  
}
JavaScript
import { NgModule } from '@angular/core';
import { BrowserModule }
    from '@angular/platform-browser';
import { BrowserAnimationsModule }
    from '@angular/platform-browser/animations';
import { AppComponent } from './app.component';
import { TableModule } from 'primeng/table';
  
@NgModule({
    imports: [
        BrowserModule,
        BrowserAnimationsModule,
        TableModule
    ],
    declarations: [AppComponent],
    bootstrap: [AppComponent],
})
  
export class AppModule { }
JavaScript

输出:

Angular PrimeNG表分页器

例子2：在这个例子中，我们使用自定义按钮以编程方式控制表格的分页。

<div style="text-align: center">
    <h2 style="color: green">GeeksforGeeks</h2>
    <h4>Angular PrimeNG Table Paginator</h4>
  
    <div class="mb-4">
        <p-button 
            type="button" 
            class="mr-3" 
            label="Previous"
            (click)="previous()" 
            [disabled]="isFirst()">
        </p-button>
        <p-button 
            type="button" 
            class="mr-3" 
            label="Reset" 
            (click)="reset()">
        </p-button>
        <p-button 
            type="button" 
            label="Next" 
            (click)="next()" 
            [disabled]="isLast()">
        </p-button>
    </div>
  
    <p-table 
        [value]="companyProfiles"
        [paginator]="true"
        [rows]="rows" 
        [(first)]="firstIndex"
        [columns]="columns">
        <ng-template pTemplate="header" let-columns>
            <tr>
                <th 
                    *ngFor="let column of columns">
                    {{column.name}}
                </th>
            </tr>
        </ng-template>
        <ng-template 
            pTemplate="body" 
            let-rowData 
            let-columns="columns">
            <tr>
                <td *ngFor="let column of columns">
                    {{rowData[column.field]}}
                </td>
            </tr>
        </ng-template>
    </p-table>
</div>
HTML
import { Component } from '@angular/core';
  
interface CompanyProfile {
    name: String;
    sector: String;
    thisYearSales: String;
    lastYearSales: String;
    thisYearGrowth: String;
    lastYearGrowth: String;
}
  
@Component({
    selector: 'app-root',
    templateUrl: './app.component.html',
})
  
export class AppComponent {
  
    firstIndex = 0;
    rows = 5;
    companyProfiles: CompanyProfile[] = [];
    columns: any[] = [
        {
            name: "Sector",
            field: "sector",
        },
        {
            name: "Company",
            field: "name",
        },
        {
            name: "This Year Sales",
            field: "thisYearSales",
        },
        {
            name: "Last Year Sales",
            field: "lastYearSales",
        },
    ];
  
  
  
    ngOnInit() {
        this.companyProfiles = [
            {
                name: "Apple",
                sector: "Technology",
                thisYearSales: "2,000,000,000",
                lastYearSales: " 1,700,000,000",
                thisYearGrowth: "21%",
                lastYearGrowth: "15%",
            },
            {
                name: "Mac Donalds",
                sector: "Food",
                thisYearSales: "1,100,000,000",
                lastYearSales: " 800,000,000",
                thisYearGrowth: "18%",
                lastYearGrowth: "15%",
            },
            {
                name: "Google",
                sector: "Technology",
                thisYearSales: "1,800,000,000",
                lastYearSales: " 1,500,000,000",
                thisYearGrowth: "15%",
                lastYearGrowth: "13%",
            },
            {
                name: "Domino's",
                sector: "Food",
                thisYearSales: "1,000,000,000",
                lastYearSales: " 800,000,000",
                thisYearGrowth: "13%",
                lastYearGrowth: "14%",
            },
            {
                name: "Meta",
                sector: "Technology",
                thisYearSales: "1,100,000,000",
                lastYearSales: " 1,200,000,000",
                thisYearGrowth: "11%",
                lastYearGrowth: "12%",
            },
            {
                name: "Snapchat",
                sector: "Technology",
                thisYearSales: "1,500,000,000",
                lastYearSales: " 1,200,000,000",
                thisYearGrowth: "16%",
                lastYearGrowth: "14%",
            },
            {
                name: "Tesla",
                sector: "AutoMobile",
                thisYearSales: "1,300,000,000",
                lastYearSales: " 900,000,000",
                thisYearGrowth: "23%",
                lastYearGrowth: "16%",
            },
            {
                name: "Ford",
                sector: "AutoMobile",
                thisYearSales: "700,000,000",
                lastYearSales: " 750,000,000",
                thisYearGrowth: "14%",
                lastYearGrowth: "15%",
            },
            {
                name: "Twitter",
                sector: "Technology",
                thisYearSales: "1,200,000,000",
                lastYearSales: " 1,200,000,000",
                thisYearGrowth: "19%",
                lastYearGrowth: "18%",
            },
            {
                name: "Reliance Jio",
                sector: "Telecom",
                thisYearSales: "800,000,000",
                lastYearSales: " 800,000,000",
                thisYearGrowth: "13%",
                lastYearGrowth: "13%",
            },
            {
                name: "H&M",
                sector: "Clothing",
                thisYearSales: "1,600,000,000",
                lastYearSales: " 1,400,000,000",
                thisYearGrowth: "17%",
                lastYearGrowth: "16%",
            },
            {
                name: "Nike",
                sector: "Sports",
                thisYearSales: "2,200,000,000",
                lastYearSales: " 2,400,000,000",
                thisYearGrowth: "18%",
                lastYearGrowth: "22%",
            },
            {
                name: "Adidas",
                sector: "Sports",
                thisYearSales: "2,300,000,000",
                lastYearSales: " 2,100,000,000",
                thisYearGrowth: "24%",
                lastYearGrowth: "21%",
            },
            {
                name: "Red Chief",
                sector: "Clothing",
                thisYearSales: "800,000,000",
                lastYearSales: " 600,000,000",
                thisYearGrowth: "19%",
                lastYearGrowth: "15%",
            },
        ];
    }
  
    reset() {
        //Set first index to 0
        this.firstIndex = 0;
    }
  
    previous() {
        // Set first index of page to firstIndex - rows
        if ((this.firstIndex - this.rows) < 0) return;
        this.firstIndex = this.firstIndex - this.rows;
    }
  
    next() {
        // Set first index of page to firstIndex + rows
        if ((this.firstIndex + this.rows) >
            this.companyProfiles.length) return;
        this.firstIndex = this.firstIndex + this.rows;
    }
  
    isFirst(): boolean {
        return this.companyProfiles ? 
            this.firstIndex === 0 : true;
    }
  
    isLast(): boolean {
        return this.companyProfiles ?
            (this.firstIndex + this.rows) >
            this.companyProfiles.length : true;
    }
  
}
JavaScript
import { NgModule } from '@angular/core';
import { BrowserModule }
    from '@angular/platform-browser';
import { BrowserAnimationsModule }
    from '@angular/platform-browser/animations';
import { AppComponent } from './app.component';
import { ButtonModule } from 'primeng/button';
import { TableModule } from 'primeng/table';
  
@NgModule({
    imports: [
        BrowserModule,
        BrowserAnimationsModule,
        TableModule,
        ButtonModule
    ],
    declarations: [AppComponent],
    bootstrap: [AppComponent],
})
  
export class AppModule { }
JavaScript

输出:

Angular PrimeNG表分页器

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