Skip to main content
freelanceshack.com

Back to all posts

How to Add !Doctype to My Html With Groovy?

Published on
4 min read
How to Add !Doctype to My Html With Groovy? image

Best HTML Tools to Buy in October 2025

1 Kaisi Professional Electronics Opening Pry Tool Repair Kit with Metal Spudger Non-Abrasive Nylon Spudgers and Anti-Static Tweezers for Cellphone iPhone Laptops Tablets and More, 20 Piece

Kaisi Professional Electronics Opening Pry Tool Repair Kit with Metal Spudger Non-Abrasive Nylon Spudgers and Anti-Static Tweezers for Cellphone iPhone Laptops Tablets and More, 20 Piece

  • DURABLE STAINLESS STEEL TOOLS ENSURE LONGEVITY AND REPEATED USE.
  • COMPLETE KIT WITH 20 TOOLS FOR ALL YOUR DEVICE REPAIR NEEDS.
  • EASY SCREEN REPLACEMENT FOR SMARTPHONES AND TABLETS, HASSLE-FREE!
BUY & SAVE
$9.99 $11.89
Save 16%
Kaisi Professional Electronics Opening Pry Tool Repair Kit with Metal Spudger Non-Abrasive Nylon Spudgers and Anti-Static Tweezers for Cellphone iPhone Laptops Tablets and More, 20 Piece
2 iFixit Prying and Opening Tool Assortment - Electronics, Phone, Laptop, Tablet Repair

iFixit Prying and Opening Tool Assortment - Electronics, Phone, Laptop, Tablet Repair

  • DIY REPAIRS MADE EASY: OPEN DEVICES AND REMOVE COMPONENTS EFFORTLESSLY.

  • ALL-IN-ONE TOOLKIT: COMPLETE SET FOR ALL YOUR DEVICE DISASSEMBLY NEEDS.

  • UNIVERSAL COMPATIBILITY: PERFECT FOR IPHONES, ANDROIDS, LAPTOPS, AND MORE!

BUY & SAVE
$9.95
iFixit Prying and Opening Tool Assortment - Electronics, Phone, Laptop, Tablet Repair
3 iFixit Jimmy - Ultimate Electronics Prying & Opening Tool

iFixit Jimmy - Ultimate Electronics Prying & Opening Tool

  • FLEXIBLE STEEL BLADE REACHES TIGHT GAPS FOR VERSATILE USE.
  • ERGONOMIC HANDLE ENSURES PRECISE CONTROL FOR DELICATE REPAIRS.
  • UNIVERSAL TOOL FOR TECH DISASSEMBLY AND HOME IMPROVEMENT PROJECTS.
BUY & SAVE
$7.95
iFixit Jimmy - Ultimate Electronics Prying & Opening Tool
4 Linux Basics for Hackers: Getting Started with Networking, Scripting, and Security in Kali

Linux Basics for Hackers: Getting Started with Networking, Scripting, and Security in Kali

BUY & SAVE
$18.73 $39.99
Save 53%
Linux Basics for Hackers: Getting Started with Networking, Scripting, and Security in Kali
5 HTML and CSS QuickStart Guide: The Simplified Beginners Guide to Developing a Strong Coding Foundation, Building Responsive Websites, and Mastering the ... (Coding & Programming - QuickStart Guides)

HTML and CSS QuickStart Guide: The Simplified Beginners Guide to Developing a Strong Coding Foundation, Building Responsive Websites, and Mastering the ... (Coding & Programming - QuickStart Guides)

BUY & SAVE
$21.24
HTML and CSS QuickStart Guide: The Simplified Beginners Guide to Developing a Strong Coding Foundation, Building Responsive Websites, and Mastering the ... (Coding & Programming - QuickStart Guides)
6 To Cut Or Not To Cut - Video Editor Editing Videographer T-Shirt

To Cut Or Not To Cut - Video Editor Editing Videographer T-Shirt

  • EXCLUSIVE DESIGN IDEAL FOR VIDEO EDITORS AND FILMMAKERS!
  • LIGHTWEIGHT, CLASSIC FIT FOR ALL-DAY COMFORT DURING EDITING SESSIONS.
  • PERFECT GIFT TO CELEBRATE THE CRAFT OF VIDEO EDITING AND FILMMAKING!
BUY & SAVE
$19.99
To Cut Or Not To Cut - Video Editor Editing Videographer T-Shirt
7 Computer IT Digital Forensics Investigative Environment Linux Bootable USB Flash Drive Utility for PCs - Professional Law Enforcement Hacking Toolkit Caine

Computer IT Digital Forensics Investigative Environment Linux Bootable USB Flash Drive Utility for PCs - Professional Law Enforcement Hacking Toolkit Caine

  • UNIVERSAL COMPATIBILITY: WORKS WITH ALL PC BRANDS, OLD AND NEW.

  • QUICK SUPPORT: ISSUES RESOLVED WITHIN 24 HOURS GUARANTEED!

  • USER-FRIENDLY GUI: INTUITIVE INTERFACE FOR EFFORTLESS NAVIGATION.

BUY & SAVE
$20.49
Computer IT Digital Forensics Investigative Environment Linux Bootable USB Flash Drive Utility for PCs - Professional Law Enforcement Hacking Toolkit Caine
8 CSS (with HTML5): Learn CSS in One Day and Learn It Well. CSS for Beginners with Hands-on Project. Includes HTML5. (Learn Coding Fast with Hands-On Project Book 2)

CSS (with HTML5): Learn CSS in One Day and Learn It Well. CSS for Beginners with Hands-on Project. Includes HTML5. (Learn Coding Fast with Hands-On Project Book 2)

BUY & SAVE
$3.99
CSS (with HTML5): Learn CSS in One Day and Learn It Well. CSS for Beginners with Hands-on Project. Includes HTML5. (Learn Coding Fast with Hands-On Project Book 2)
+
ONE MORE?

To add the !DOCTYPE declaration in HTML using Groovy, you can simply include it as a string at the beginning of your HTML document. Here's an example:

def htmlString = ''' My HTML Page Hello, World! '''

// Further code handling the HTML string...

In the example above, the <!DOCTYPE html> declaration is added on the first line of the HTML document. This informs the browser about the version of HTML being used, in this case, HTML5. You can include this declaration in any Groovy script or HTML template to ensure proper rendering of your HTML code.

What is the difference between a full doctype and a short doctype declaration?

A full doctype declaration includes the complete Document Type Definition (DTD) and specifies the version of HTML or XML being used. It is typically longer and more specific. For example, the full doctype declaration for HTML5 is:

A short doctype declaration, on the other hand, is an abbreviated version that only specifies the document type and does not include the DTD or version information. It is more concise. An example of a short doctype declaration for HTML5 is:

In most cases, the short doctype declaration is sufficient for modern web development as it triggers the browser to use standards mode for rendering the webpage.

What does the doctype declaration mean?

The doctype declaration is an instruction or a code snippet that is placed at the very beginning of an HTML document. It is used to inform the web browser about the type of HTML being used in the document.

The purpose of the doctype declaration is to ensure that the browser renders the web page in standards-compliant mode, which helps in achieving consistent and predictable results across different browsers.

The doctype declaration contains the document type definition (DTD) or the Document Type Identifier (DTI), which is a set of rules or specifications that define the structure and syntax of a particular version of HTML.

By specifying the correct doctype declaration, web developers ensure that their HTML pages are interpreted and displayed correctly by web browsers, as per the standards defined by the World Wide Web Consortium (W3C).

How to add a custom doctype declaration in Groovy?

To add a custom DOCTYPE declaration in Groovy, you can use the MarkupBuilder class from the groovy.xml package.

Here's an example that demonstrates how to add a custom DOCTYPE declaration in Groovy:

import groovy.xml.MarkupBuilder

def writer = new StringWriter() def xml = new MarkupBuilder(writer)

xml.mkp.xmlDeclaration(version: '1.0', encoding: 'UTF-8') xml.mkp.doctype('customRootElementName', 'PUBLIC', '"-//Custom DTD//EN"', 'custom.dtd')

xml.customRootElementName() { // add your XML content here }

def output = writer.toString() println output

In this example, we first create a StringWriter to capture the XML output. Then we create a MarkupBuilder instance and specify the version and encoding of the XML declaration using xml.mkp.xmlDeclaration.

Next, we use the xml.mkp.doctype method to add the custom DOCTYPE declaration. The first parameter is the root element name, followed by the public identifier, system identifier, and DTD file name.

After that, you can add your XML content inside the root element using the closure syntax. In this example, we use xml.customRootElementName() to define the root element.

Finally, we convert the output to a string using writer.toString() and print it.

Remember to replace 'customRootElementName' with the actual name of your root element and 'custom.dtd' with the actual name of your DTD file.

What is the doctype declaration for HTML5 with XML syntax in Groovy?

The doctype declaration for HTML5 with XML syntax in Groovy is:

def document = new MarkupBuilder().html(version: '5.0', 'xmlns:html': 'http://www.w3.org/1999/xhtml', 'xml:lang': 'en', 'xmlns': 'http://www.w3.org/1999/xhtml') { mkp.declareNamespace(html: "http://www.w3.org/1999/xhtml", 'xml:lang': "en", xmlns: "http://www.w3.org/1999/xhtml") }

This will create an HTML5 document using the XML syntax in Groovy.

How to specify a doctype declaration for HTML4 in Groovy?

To specify a doctype declaration for HTML4 in Groovy, you can use the MarkupBuilder class to generate the HTML content and include the doctype declaration.

Here is an example of how to specify the doctype declaration for HTML4 in Groovy:

import groovy.xml.MarkupBuilder

def writer = new StringWriter() def builder = new MarkupBuilder(writer)

builder.declare("") builder.html { // Your HTML content here }

println writer.toString()

In the above code, we create a StringWriter to capture the HTML content generated by the MarkupBuilder. We then declare the doctype using the declare method of the MarkupBuilder, and specify the desired doctype declaration for HTML4.

Inside the html closure, you can add your HTML content using the builder syntax for generating HTML elements.

After the HTML content is generated, we can retrieve it from the StringWriter using writer.toString().

You can modify the HTML content and the doctype declaration as per your requirements.