How to properly use jsPDF library

javascript

pdf-generation

javascript-libraries

html-to-pdf

byNikita Barsukov·Nov 22, 2024

Efficiently generate PDFs with jsPDF by initiating an instance const doc = new jsPDF(), then populate your PDF using doc.text('Your Text', x, y) for precise positioning. Finally, unleash doc.save('output.pdf') to download your creation.

const doc = new jsPDF();
doc.text('Hello World! I am text in a PDF.', 20, 20);  // Provoking existential thoughts in (x=20, y=20)
doc.save('Philosophical-PDF.pdf');                     // A PDF named 'Philosophical-PDF.pdf' takes flight!

Ensure text content and coordinates blend perfectly with your data and layout design.

Successful import of jsPDF

Importing libraries in right sequence

Always kick-off by including the jsPDF library in the right order. If using jQuery, include the jsPDF library after it to avoid any import clashes.

jQuery library (if used)
jsPDF library
html2canvas library (optional, for extra Dumbledore-like powers)

For convenient and fast access, use CDN links to link these libraries.

Leveraging HTML elements

For conversion of HTML content into PDF, use the .html() method of jsPDF. Using callbacks while leveraging this method can handle asynchronous operations like a charm.

doc.html(document.body, {
  callback: function (doc) {
    doc.save('HTML-to-PDF-magic.pdf');
  }
});

Setting up HTML elements like buttons for activating PDF creation is crucial in this process. Also, always remember to connect the event listeners.

Handling probable issues

The '#smdadminbar' error is similar to a dementor in Hogwarts. To shield your page from this, double-check your library imports. Implement error handling to tackle any obstacles during PDF creation gracefully. Visiting the modules documentation of jsPDF is equivalent to reading the Hogwarts library to tackle dementors.

Advanced tips to become Dumbledore

Customizing the canvas

When you're casting html2canvas charm along with jsPDF, set the canvas dimensions to fit your required PDF output. Now you're in control of the Hogwarts magical resolution and quality.

Sequencing scripts: The Marauder's map

Sequencing can make or break the compatibility of scripts. To prevent yourself from turning into a werewolf like Professor Lupin, ensure your scripts load in the proper sequence and are compatible across different browsers.

Generating and triggering save

The .save() function of jsPDF, simple yet powerful, is like casting Expelliarmus. Here's the spell to customize it with your chosen wand:

document.getElementById('download').addEventListener('click', () => {
  const doc = new jsPDF();
  doc.text('Hello from Hogwarts', 20, 20);            // Sending an owl from (x=20, y=20) with a message
  doc.save('Message-from-Hogwarts.pdf');              // The chosen name for our owl message
});