`#` vs. `javascript:void(0)`: Which is the Better `href` Value for JavaScript Links?

Determining the Best "href" Value for JavaScript Links: "#" vs "javascript:void(0)"

When creating links that solely execute JavaScript code, developers often face a choice between using "#" or "javascript:void(0)" as the "href" value. This article examines which option is superior in terms of functionality, page load speed, validation, and other factors.

"#"

Using "#" as the "href" value signifies an anchor to the current page, redirecting the browser to the top of the document. However, developers often exploit this for JavaScript links by returning false on the onclick event to prevent page navigation.

However, this approach carries several drawbacks:

• Potential for Errors: Assigning onclick="doSomething()" instead of onclick="return doSomething()" can lead to inadvertent navigation.
• Error Handling Issues: Thrown errors in the associated function may not execute the return false; statement, resulting in unexpected behavior.
• Dynamic Event Assignment: If the onclick property is assigned dynamically, it complicates the process of calling or applying functions effectively.

"javascript:void(0)"

Using "javascript:void(0)" as the "href" value instead avoids these issues:

• Prevents Navigation: JavaScript code is executed without modifying the page's URL or triggering page navigation.
• Simplicity: Dynamic event assignment is straightforward without the need for additional code to handle potential errors or return values.
• Accessibility: Assistive technologies, such as screen readers, can easily identify and announce links with "javascript:void(0)".

Recommendation:

Based on the analysis above, it is recommended to use "javascript:void(0)" as the "href" value for JavaScript links. Its advantages in preventing navigation, simplifying event assignment, and providing accessibility make it the preferred choice for developers.

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