JavaScript does not recognize jsPDF

Question

JavaScript does not recognize jsPDF

After importing the jsPDF library, I attempted to export to PDF but encountered a JavaScript error stating that jsPDF is not defined.

I tried various solutions from similar posts but none of them seemed to work for me.

You can find the fiddle here: https://jsfiddle.net/aybhvf8e/1/

<script type="text/javascript" src="https://unpkg.com/jspdf@latest/dist/jspdf.umd.min.js"></script>

$( document ).ready(function() {

var doc = new jsPDF();
var specialElementHandlers = {
    '#editor': function (element, renderer) {
        return true;
    }
};
})

$('#cmd').click(function () {
    doc.fromHTML($('#content').html(), 15, 15, {
        'width': 170,
            'elementHandlers': specialElementHandlers
    });
    doc.save('sample-file.pdf');
});


<div id="content">
     <h3>Hello, this is a H3 tag</h3>

    <p>A paragraph</p>
</div>
<div id="editor"></div>
<button id="cmd">generate PDF</button>

javascript jspdf

Answer 1

Answer №1

It appears that your code is correct, but there may be an issue with the cdn link. I have used a debug version for testing purposes.

Here is a functional example I have created for reference. If you are unable to download the PDF due to restrictions, you can try using this fiddle.

Demo: Download PDF

The CDN link I utilized is: JsPDF CDN Link. Feel free to explore other versions available.

function createPdf() {

  var doc = new jsPDF();
  
  source = $('#content')[0];
  
  specialElementHandlers = {
        '#editor': function (element, renderer) {
            return true
        }
    };
  
  doc.fromHTML(
    source,
    15,
    15, 
    {
      'width': 170,
      'elementHandlers': specialElementHandlers
    }
  );
  doc.save('sample-file.pdf')
}

<script src="https://cdnjs.cloudflare.com/ajax/libs/jspdf/1.2.61/jspdf.debug.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>

<div id="content">
     <h3>Hello, this is a H3 tag</h3>

    <p>A paragraph</p>
</div>
<div id="editor"></div>
<button onclick="javascript:createPdf()" id="cmd">generate PDF</button>

Answer 2

It appears that your code is correct, but there may be an issue with the cdn link. I have used a debug version for testing purposes.

Here is a functional example I have created for reference. If you are unable to download the PDF due to restrictions, you can try using this fiddle.

Demo: Download PDF

The CDN link I utilized is: JsPDF CDN Link. Feel free to explore other versions available.

function createPdf() {

  var doc = new jsPDF();
  
  source = $('#content')[0];
  
  specialElementHandlers = {
        '#editor': function (element, renderer) {
            return true
        }
    };
  
  doc.fromHTML(
    source,
    15,
    15, 
    {
      'width': 170,
      'elementHandlers': specialElementHandlers
    }
  );
  doc.save('sample-file.pdf')
}

<script src="https://cdnjs.cloudflare.com/ajax/libs/jspdf/1.2.61/jspdf.debug.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>

<div id="content">
     <h3>Hello, this is a H3 tag</h3>

    <p>A paragraph</p>
</div>
<div id="editor"></div>
<button onclick="javascript:createPdf()" id="cmd">generate PDF</button>

Answer 3

Answer №2

To resolve the issue of 'jsPDF is not defined', I found that using const doc = new jspdf.jsPDF() was the key, as illustrated in the example below:

<!DOCTYPE html>
<html lang="en>
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <script src="https://cdnjs.cloudflare.com/ajax/libs/jspdf/2.4.0/jspdf.umd.min.js"></script>
  <title>Convert <div> to PDF</title>
</head>
    <body>

        <div id="content">
            <h1>Hello, World!</h1>
        </div>

        <button onclick="generatePDF()">Generate PDF</button>

        <script>
        function generatePDF() {
        // Default export is a4 paper, portrait, using millimeters for units
        **const doc = new jspdf.jsPDF();**

        doc.text("Hello world!", 10, 10);
        doc.save("a4.pdf");
        }
        </script>

    </body>
</html>

Answer 4

To resolve the issue of 'jsPDF is not defined', I found that using const doc = new jspdf.jsPDF() was the key, as illustrated in the example below:

<!DOCTYPE html>
<html lang="en>
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <script src="https://cdnjs.cloudflare.com/ajax/libs/jspdf/2.4.0/jspdf.umd.min.js"></script>
  <title>Convert <div> to PDF</title>
</head>
    <body>

        <div id="content">
            <h1>Hello, World!</h1>
        </div>

        <button onclick="generatePDF()">Generate PDF</button>

        <script>
        function generatePDF() {
        // Default export is a4 paper, portrait, using millimeters for units
        **const doc = new jspdf.jsPDF();**

        doc.text("Hello world!", 10, 10);
        doc.save("a4.pdf");
        }
        </script>

    </body>
</html>

Answer 5

Answer №3

After encountering a couple of key issues, I was able to find solutions by forking this repository. The first issue I identified was the lack of a link to jspdf. This can easily be rectified by including the following script tag in the html code:

<script src="https://cdnjs.cloudflare.com/ajax/libs/jspdf/1.5.3/jspdf.min.js"></script>

The second issue pertained to adding the click event listener outside the ready() function. By doing so, you face two problems: the event might not be properly attached (ensure that you troubleshoot the ready() function) and variables defined within the ready() function are inaccessible (out of scope) in the click function. To resolve these issues, it is recommended to place the click listener inside the ready listener as shown below:

$( document ).ready(function() {

var doc = new jsPDF();
var specialElementHandlers = {
    '#editor': function (element, renderer) {
        return true;
    }
};
$('#cmd').click(function () {
    doc.fromHTML($('#content').html(), 15, 15, {
        'width': 170,
            'elementHandlers': specialElementHandlers
    });
    doc.save('sample-file.pdf');
});

})

Answer 6

After encountering a couple of key issues, I was able to find solutions by forking this repository. The first issue I identified was the lack of a link to jspdf. This can easily be rectified by including the following script tag in the html code:

<script src="https://cdnjs.cloudflare.com/ajax/libs/jspdf/1.5.3/jspdf.min.js"></script>

The second issue pertained to adding the click event listener outside the ready() function. By doing so, you face two problems: the event might not be properly attached (ensure that you troubleshoot the ready() function) and variables defined within the ready() function are inaccessible (out of scope) in the click function. To resolve these issues, it is recommended to place the click listener inside the ready listener as shown below:

$( document ).ready(function() {

var doc = new jsPDF();
var specialElementHandlers = {
    '#editor': function (element, renderer) {
        return true;
    }
};
$('#cmd').click(function () {
    doc.fromHTML($('#content').html(), 15, 15, {
        'width': 170,
            'elementHandlers': specialElementHandlers
    });
    doc.save('sample-file.pdf');
});

})

Answer 7

Answer №4

When I think about VQR, it always brings up one question in my mind. Sometimes my app works in places without network connection. In those instances, the next line won't function without a network, right?

<script src="https://cdnjs.cloudflare.com/ajax/libs/jspdf/1.5.3/jspdf.min.js"></script>

So, to address this issue, I decided to install it...

npm install jspdf --save

Now, the question is, which files do I need to copy to my Js folder for the line to work properly?

var doc = new jsPDF();

Answer 8

When I think about VQR, it always brings up one question in my mind. Sometimes my app works in places without network connection. In those instances, the next line won't function without a network, right?

<script src="https://cdnjs.cloudflare.com/ajax/libs/jspdf/1.5.3/jspdf.min.js"></script>

So, to address this issue, I decided to install it...

npm install jspdf --save

Now, the question is, which files do I need to copy to my Js folder for the line to work properly?

var doc = new jsPDF();

JavaScript does not recognize jsPDF

Answer №1

Answer №2

Answer №3

Answer №4

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