JavaScript Window print() Method

Posted in JavaScript Tutorial

Updated on Mar 03, 2024

By Mari Selvan

👁️ 638 - Views

⏳ 4 mins

💬 1 Comment

Photo Credit to CodeToFun

🙋 Introduction

In web development, providing a seamless way for users to print content is essential. The window.print() method in JavaScript is a valuable tool for triggering the browser's print dialog, allowing users to print the current page or a specific portion of it.

This guide will walk you through the syntax, usage, best practices, and practical applications of the window.print() method.

🧠 Understanding print() Method

The window.print() method is a member of the Window interface in JavaScript and is used to open the Print Dialog Box. It's commonly employed to facilitate the printing of the current browser window or a specific part of it.

💡 Syntax

The syntax for the print() method is straightforward:

syntax.js

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window.print();

📝 Example

Let's start with a basic example demonstrating the usage of the window.print() method:

example.js

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// Triggering the print dialog
function printPage() {
  window.print();
}

In this example, calling the printPage() function will open the print dialog, allowing the user to configure print settings and initiate the printing process.

🏆 Best Practices

When working with the print() method, consider the following best practices:

User Interaction:

Trigger the window.print() method in response to a user action, such as clicking a "Print" button. This ensures a better user experience and prevents unexpected print dialog pop-ups.
example.js
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```
// HTML button element
const printButton = document.getElementById('printButton');

// Triggering print on button click
printButton.addEventListener('click', function() {
  window.print();
});
```
Styling for Print:

Create a separate CSS style specifically for print layouts using media queries. This ensures that the printed content looks well-formatted on paper.
example.js
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```
<style>
@media print {
  /* Your print-specific styles here */
  body {
    font-size: 12pt;
  }
}
</style>
```

📚 Use Cases

Printing Specific Page Elements:

The window.print() method can be combined with CSS media queries to print specific page elements:

example.js

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<style>
  @media print {
    .printable-content {
      display: block;
    }

    body {
      font-size: 12pt;
    }
  }
</style>

<div class="printable-content">
  <!-- Content to be printed -->
  <p>This will be printed.</p>
</div>

<button onclick="window.print()">Print Content</button>

Custom Print Dialog Trigger:

Creating a custom print button and triggering the print dialog on button click:

example.js

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<button onclick="printPage()">Print This Page</button>

<script>
  function printPage() {
    window.print();
  }
</script>

🎉 Conclusion

The window.print() method is a simple yet powerful tool for enabling users to print web content effortlessly.

By adhering to best practices and exploring diverse use cases, you can harness the full potential of the print() method in your JavaScript projects.