JavaScript Links: '#' vs. 'javascript:void(0)' – Which is the Better Approach?

JavaScript Links: "#" vs. ""javascript:void(0)""

Creating JavaScript-only links involves two common methods: using "#" or "javascript:void(0)" as the "href" value. Which approach is superior in terms of functionality, page load speed, and validity?

"#" (Hash Anchor)

This method creates an anchor link to the same page's current location (#).

Advantages:

• Minimal impact on page load speed

Disadvantages:

• Can lead to anchor highlighting in the browser's address bar
• Requires a semicolon at the end of JavaScript function calls (e.g., onclick="myJsFunc();")
• Susceptible to misuse by returning values in JavaScript functions, leading to unexpected behavior

"javascript:void(0)"

This method uses "javascript:void(0)" as the "href" value, effectively disabling the link's default behavior.

Advantages:

• Avoids potential conflicts with page anchors
• Allows dynamic assignment of JavaScript functions to the "onclick" property
• Enforces proper termination of JavaScript function calls (no semicolon required)

Which to Choose?

The recommended approach is to use "javascript:void(0)" as it offers several benefits over "#":

• Avoids Common Pitfalls: Prevents errors caused by returning values in JavaScript functions or forgetting semicolons.
• Supports Dynamic Assignment: Facilitates attaching JavaScript functions to the "onclick" property dynamically.
• Enhances Usability: Erases the anchor highlighting issue associated with "#."

While both methods serve the purpose of running JavaScript code, "javascript:void(0)" is the preferred choice for its simplicity, flexibility, and error prevention.

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