How to Generate a PDF from HTML within a Div using JavaScript?-JS Tutorial-php.cn

How to Generate a PDF from HTML within a Div using JavaScript?

Linda Hamilton

Release： 2024-12-08 10:51:13

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How to Generate a PDF from HTML within a Div using JavaScript?

Generate PDF from HTML in div using Javascript

The task that needs to be accomplished is to convert the content of a div with the ID "pdf" into a PDF document. This PDF document must be automatically downloaded with the filename "foobar.pdf."

While jspdf is commonly used for PDF generation, its text function limitation presents a challenge. It only accepts string values, whereas HTML input is required. To address this issue, plugins, such as jspdf.plugin.from_html.js and jspdf.plugin.split_text_to_size.js, are required. Here's how to use these plugins to achieve the desired result:

Begin by incorporating the necessary scripts into your project:

jspdf.js
jspdf.plugin.from_html.js
jspdf.plugin.split_text_to_size.js
jspdf.plugin.standard_fonts_metrics.js

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If certain elements need to be excluded from the PDF, they must be assigned an ID and identified within a special element handler of jsPDF. For instance, to exclude the element with the ID "ignorePDF," modify the HTML code as follows:

<!DOCTYPE html>
<html>
  <body>
    <p>

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The following JavaScript code will generate the PDF and display it in a popup window:

var doc = new jsPDF();          
var elementHandler = {
  '#ignorePDF': function (element, renderer) {
    return true;
  }
};
var source = window.document.getElementsByTagName("body")[0];
doc.fromHTML(
    source,
    15,
    15,
    {
      'width': 180,'elementHandlers': elementHandler
    });

doc.output("dataurlnewwindow");

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This method will create a PDF containing the text "print this to pdf."

It's crucial to note that special element handlers primarily handle IDs in the current version. Consequently, using class selectors (e.g., '.ignorePDF') won't produce the intended result.

Moreover, jsPDF lacks support for CSS styling and will only print text within text nodes. Therefore, values from textareas and similar elements won't be included in the PDF.

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