Angular 14 ngx-printer Example to Print HTML Sections of Page With CSS Classes Using TypeScript

Welcome folks today in this blog post we will be using the ngx-printer library in angular 14 to print html sections of page with css classes using typescript in browser. All the full source code of the application is shown below.

Get Started

In order to get started you need to make a new angular project using the below command as shown below

ng new sampleproject

cd sampleproject

And after that you need to install the below libraries using the below command as shown below

npm i ngx-printer

And after that you will see the below directory structure of the angular app as shown below

And now you need to go to app.module.ts file and include the module as shown below

app.module.ts

import { BrowserModule } from "@angular/platform-browser";
import { NgModule } from "@angular/core";
import { NgxPrinterModule } from "ngx-printer";
import { AppComponent } from "./app.component";

@NgModule({
  declarations: [AppComponent],
  imports: [
    BrowserModule,
    NgxPrinterModule.forRoot({
      printOpenWindow: true,
      renderClass: "custom-print",
      printPreviewOnly: false
    })
  ],
  providers: [],
  bootstrap: [AppComponent]
})
export class AppModule {}

import { BrowserModule } from "@angular/platform-browser";

import { NgModule } from "@angular/core";

import { NgxPrinterModule } from "ngx-printer";

import { AppComponent } from "./app.component";

@NgModule({

declarations: [AppComponent],

imports: [

BrowserModule,

NgxPrinterModule.forRoot({

printOpenWindow: true,

renderClass: "custom-print",

printPreviewOnly: false

})

providers: [],

bootstrap: [AppComponent]

})

export class AppModule {}

As you can see we are including the NgxPrinterModule and adding it inside the imports array. And inside it we are passing the options object where we are providing the custom css class and also to preview the print window inside new tab.

And now we need to go to app.component.html file and copy paste the following code

app.component.html

<!-- ngxPrintItem printName="First one"-->
<div style="">
  <div id="printDiv" style="width: 14.8cm; height: 10.5cm;position: relative; border: 1px solid red;">
    <div class="title">Document title</div>
    <div class="description">Document description</div>
    <div class="conclusion">Document conclusion</div>
  </div>
</div>
<br />
<!-- ngxPrintItemButton divID="printDiv" -->
<button (click)="print()">
  print
</button>

<div class="title">Document title</div>

<div class="description">Document description</div>

<div class="conclusion">Document conclusion</div>

</div>

<br />

</button>

As you can see we have the different div inside the html and we have also attached the css styles to it. And then we have the simple button to print the html section inside the new window. And here we have attached the onclick event listener and we are calling the print() method. Now we need to define this method inside the typescript.

And now we need to go to app.component.ts file and copy paste the following code

app.component.ts

import { Component, AfterViewInit } from "@angular/core";
import { NgxPrinterService } from "ngx-printer";

@Component({
  selector: "my-app",
  templateUrl: "./app.component.html",
  styleUrls: ["./app.component.css"]
})
export class AppComponent implements AfterViewInit {
  name = "Angular";
  hidePage = false;

  constructor(private printerService: NgxPrinterService) {}

  ngAfterViewInit() {
    this.printerService.$printWindowOpen.subscribe(opened => {
      this.hidePage = opened;
      console.log(this.hidePage);
    });
  }

  print() {
    const css = `
      @page {
        margin: 0;
        size: 14.8cm 10.5cm;
      }
    `;

    const head = document.getElementsByTagName("head")[0];
    const style = document.createElement("style");
    style.type = "text/css";
    style.media = "print";
    style.appendChild(document.createTextNode(css));
    head.appendChild(style);

    this.printerService.printDiv("printDiv");
  }
}

import { Component, AfterViewInit } from "@angular/core";

import { NgxPrinterService } from "ngx-printer";

@Component({

selector: "my-app",

templateUrl: "./app.component.html",

styleUrls: ["./app.component.css"]

})

export class AppComponent implements AfterViewInit {

name = "Angular";

hidePage = false;

constructor(private printerService: NgxPrinterService) {}

ngAfterViewInit() {

this.printerService.$printWindowOpen.subscribe(opened => {

this.hidePage = opened;

console.log(this.hidePage);

});

}

print() {

const css = `

@page {

margin: 0;

size: 14.8cm 10.5cm;

}

const head = document.getElementsByTagName("head")[0];

const style = document.createElement("style");

style.type = "text/css";

style.media = "print";

style.appendChild(document.createTextNode(css));

head.appendChild(style);

this.printerService.printDiv("printDiv");

}

As you can see we are importing the ngxPrinterService at the top and then inside the constructor we are initializing the printerService and inside it we are hiding the page. And now inside the print() method we are setting the css properties of the page and then we are we are allowing the user to print the content of the div section inside the new window as shown below