search
HomeWeb Front-endHTML TutorialHow can I write a script that uses the W3C DOM or IE 4 DOM depending on its availability?

我如何编写一个脚本,根据其可用性使用W3C DOM或IE 4 DOM?

If you wish to write a script that can flexibly use W3C DOM or IE 4 DOM depending on its availability, then you can use a functional testing method that first checks Is there a method or property to determine if the browser has the functionality you want.

Here is the code snippet that displays the same -

if (document.getElementById) {
   // If the W3C method exists, use it
}

else if (document.all) {
   // If the all[] array exists, use it
}

else {
   // Otherwise use the legacy DOM
}

The above is the detailed content of How can I write a script that uses the W3C DOM or IE 4 DOM depending on its availability?. For more information, please follow other related articles on the PHP Chinese website!

Statement
This article is reproduced at:tutorialspoint. If there is any infringement, please contact admin@php.cn delete
What are the various formatting tags in HTML?What are the various formatting tags in HTML?Apr 28, 2025 pm 05:39 PM

The article discusses various HTML formatting tags used for structuring and styling web content, emphasizing their effects on text appearance and the importance of semantic tags for accessibility and SEO.

What is the difference between the 'id' attribute and the 'class' attribute of HTML elements?What is the difference between the 'id' attribute and the 'class' attribute of HTML elements?Apr 28, 2025 pm 05:39 PM

The article discusses the differences between HTML's 'id' and 'class' attributes, focusing on their uniqueness, purpose, CSS syntax, and specificity. It explains how their use impacts webpage styling and functionality, and provides best practices for

What is the 'class' attribute in HTML?What is the 'class' attribute in HTML?Apr 28, 2025 pm 05:37 PM

The article explains the HTML 'class' attribute's role in grouping elements for styling and JavaScript manipulation, contrasting it with the unique 'id' attribute.

What are different types of lists in HTML?What are different types of lists in HTML?Apr 28, 2025 pm 05:36 PM

Article discusses HTML list types: ordered (<ol>), unordered (<ul>), and description (<dl>). Focuses on creating and styling lists to enhance website design.

What are HTML Entities?What are HTML Entities?Apr 28, 2025 pm 05:35 PM

HTML entities are codes used in HTML to display special characters correctly, ensuring proper rendering across browsers and devices.

What is the advantage of collapsing white space?What is the advantage of collapsing white space?Apr 28, 2025 pm 05:35 PM

Collapsing white space optimizes content by reducing file size, enhancing readability, and ensuring consistent formatting across platforms in web and document processing.

What are void elements in HTML?What are void elements in HTML?Apr 28, 2025 pm 05:34 PM

The article discusses void elements in HTML, which are self-contained and do not require closing tags. It covers examples, differences from regular elements, and best practices for their use.

What is the purpose of HTML tags?What is the purpose of HTML tags?Apr 28, 2025 am 12:02 AM

HTMLtagsareessentialforstructuringwebpages,enhancingaccessibility,SEO,andperformance.1)Theyareenclosedinanglebracketsandusedinpairstocreateahierarchicalstructure.2)SemantictagslikeandimproveuserexperienceandSEO.3)Creativetagslikeenabledynamicgraphics

See all articles

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

Video Face Swap

Video Face Swap

Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Tools

WebStorm Mac version

WebStorm Mac version

Useful JavaScript development tools

MantisBT

MantisBT

Mantis is an easy-to-deploy web-based defect tracking tool designed to aid in product defect tracking. It requires PHP, MySQL and a web server. Check out our demo and hosting services.

ZendStudio 13.5.1 Mac

ZendStudio 13.5.1 Mac

Powerful PHP integrated development environment

SublimeText3 Chinese version

SublimeText3 Chinese version

Chinese version, very easy to use

PhpStorm Mac version

PhpStorm Mac version

The latest (2018.2.1) professional PHP integrated development tool