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How Do I Print Part Of A Rendered Html Page In Javascript

When you want to print a specific part of a rendered HTML page using JavaScript, you can achieve it with a few simple steps. This can be really handy if you only need to print a particular section of a webpage instead of the entire content. Let's walk through the process together.

Firstly, you need to identify the specific part of the HTML page that you want to print. You can do this by adding an ID attribute to the container element of that section. For example, you can add an ID like "print-section" to the `

` element that encompasses the content you wish to print.

Html

<div id="print-section">
    <!-- Content you want to print goes here -->
</div>

Next, you'll write JavaScript code to handle the printing functionality. You can use the `window.print()` method to trigger the print dialog box. However, to ensure only the designated section is printed, you'll have to manipulate the CSS.

Here's a simple JavaScript code snippet to achieve this:

Javascript

function printSection() {
    var printContents = document.getElementById('print-section').innerHTML;
    var originalContents = document.body.innerHTML;

    document.body.innerHTML = printContents;

    window.print();

    document.body.innerHTML = originalContents;
}

In this script, `printSection()` is a function that gets the inner HTML of the designated section by its ID, saves the original contents of the page, replaces the entire body content with the specific section, triggers the print dialog using `window.print()`, and finally restores the original content after printing.

To make this work, you need a way to trigger the `printSection()` function. You can create a button on your webpage that calls this function when clicked. A button like this can be used:

Html

<button>Print Section</button>

With this setup, when the button is clicked, only the content within the element with the ID "print-section" will be sent to the printer. This way, you can selectively print specific parts of your HTML page without unnecessary content.

Make sure to test this functionality on different browsers to ensure cross-browser compatibility. Additionally, consider styling the print section appropriately to ensure it looks good when printed.

So there you have it! Printing a specific part of a rendered HTML page with JavaScript is a useful trick to have in your toolbox when you need to provide users with a customized print experience.

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