Home > Web Front-end > JS Tutorial > body text

When Should You Use `setAttribute` vs. Dot Attribute Notation in JavaScript?

Barbara Streisand
Release: 2024-11-08 08:09:01
Original
238 people have browsed it

When Should You Use `setAttribute` vs. Dot Attribute Notation in JavaScript?

When to Utilize setAttribute vs. Dot Attribute Notation in JavaScript

The choice between setAttribute and dot attribute notation in JavaScript has been subject to debate. While both methods allow for setting values of HTML elements, there are subtle differences to consider.

Standard Attributes vs. Non-Standard Attributes

According to "JavaScript: The Definitive Guide," HTML elements expose JavaScript properties corresponding to standard HTML attributes. For these, the dot attribute notation (e.g., myObj.className = "nameOfClass") is preferred.

However, for non-standard attributes that are not natively supported by JavaScript, setAttribute is necessary. This method accepts two parameters: the attribute name as a string and its value. For instance, to set the non-standard "frameborder" attribute:

node.setAttribute('frameborder', '0');
Copy after login

Examples:

  • For standard attributes:
const heading = document.createElement('h1');
heading.id = 'main-heading'; // Dot attribute notation preferred
heading.className = 'heading-style'; // Dot attribute notation preferred
Copy after login
  • For non-standard attributes:
const frame = document.createElement('iframe');
frame.setAttribute('frameborder', '0'); // setAttribute required for non-standard attributes
Copy after login

Conclusion:

In general, the dot attribute notation should be used for setting standard HTML attributes, as it provides a direct and concise syntax. However, for non-standard attributes, setAttribute is the appropriate method to ensure compatibility across different browsers.

The above is the detailed content of When Should You Use `setAttribute` vs. Dot Attribute Notation in JavaScript?. For more information, please follow other related articles on the PHP Chinese website!

source:php.cn
Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
Latest Articles by Author
Popular Tutorials
More>
Latest Downloads
More>
Web Effects
Website Source Code
Website Materials
Front End Template
About us Disclaimer Sitemap
php.cn:Public welfare online PHP training,Help PHP learners grow quickly!