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Typescript - how to use jsPDF in Angular2 correctly?

I created an Angular2 application that generates JSON data. I want to save this JSON output to a file, preferably a PDF file. This application is written using Typescript.

I used jsPDF to write JSON data to a PDF file. I installed the jsPDF package through npm using npm install jspdf --save. I also added the necessary links on the index.html page. I made these changes to my application when it was launched. I was able to save the JSON data to a file.

When I stopped and restarted the application, it did not start as expected. I got the following error:

json-excel@1.0.0 start C: \ Users ***** \ Documents \ Projects \ Angular \ json-to-pdf

tsc && at the same time "npm run tsc: w" "npm run lite"

app / components / app.component.ts (35.19): TS2304 error: cannot find name 'jsPDF'.

I am adding the code that I used.

package.json:

"dependencies": {
     "@angular/common": "2.0.0-rc.1",
     "@angular/compiler": "2.0.0-rc.1",
     "@angular/core": "2.0.0-rc.1",
     "@angular/http": "2.0.0-rc.1",
     "@angular/platform-browser": "2.0.0-rc.1",
     "@angular/platform-browser-dynamic": "2.0.0-rc.1",
     "@angular/router": "2.0.0-rc.1",
     "@angular/router-deprecated": "2.0.0-rc.1",
     "@angular/upgrade": "2.0.0-rc.1",
     "angular2-in-memory-web-api": "0.0.7",
     "bootstrap": "^3.3.6",
     "es6-shim": "^0.35.0",
     "jquery": "^2.2.4",
     "jspdf": "^1.2.61",
     "reflect-metadata": "^0.1.3",
     "rxjs": "5.0.0-beta.6",
     "systemjs": "0.19.27",
     "zone.js": "^0.6.12"
}

index.html

<html>
  <head>
    <title>JSON to PDF</title>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1">

    ....

    <script src="https://cdnjs.cloudflare.com/ajax/libs/jspdf/1.0.272/jspdf.debug.js"></script>

    ....

  </head>

  <!-- 3. Display the application -->
  <body class="bg">
    <div>
      <app>Loading...</app>
    </div>
  </body>
</html>

app.component.ts:

 import {Component} from '@angular/core';
 @Component({
   selector: 'app',
   template: `<button (click)="createFile()">Export JSON to PDF</button>`
 })
 export class AppComponent {
     public item = {
        "Name" : "XYZ",
         "Age" : "22",
         "Gender" : "Male"
     }
     constructor() {}
     createFile(){
        var doc = new jsPDF();
        var i=0;
        for(var key in this.item){
           doc.text(20, 10 + i, key + ": " + this.item[key]);
           i+=10;
        }
        doc.save('Test.pdf');
    }
 }

I think there is some import statement in the app.component.ts file. Can someone point to the correct import statement if this is not enough? If this is the mistake I made, can I know how to use jsPDF in Angular2 correctly?

Thank.

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2 answers

Using jspdf with the latest version of angular cli is very simple. Just install jspdf from npm and use it something like this:

app.component.ts

// Note that you cannot use import jsPDF from 'jspdf' if you 
// don't install jspdf types from DefinitelyTyped
let jsPDF = require('jspdf');
import { Component } from '@angular/core';

@Component({
  selector: 'app-root',
  templateUrl: './app.component.html',
  styleUrls: ['./app.component.css']
})
export class AppComponent {
  title = 'app works!';

  constructor() {
    let doc = new jsPDF();
    doc.text("Hello", 20, 20);
    doc.save('table.pdf');
  }
}

For older versions of angular cli based on systemjs instead of webpack

angular-cli umd javascript. declare jsPDF: any systemjs.

+8

Angular -cli Angular 4, jspdf Scripts .angular-cli.json

"scripts": [
        "../node_modules/jspdf/dist/jspdf.min.js"
      ]


import * as JSPdf from 'jspdf'; 


  generatePdf() {
    let doc = new JSPdf();
    doc.text("Hello", 20, 20);
    doc.save('table.pdf');
}
+4

Source: https://habr.com/ru/post/1648668/

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