JavaScript – Href Vs Onclick For Callback Function On Hyperlink

In JavaScript, both href and onclick can be used to execute a callback function when a hyperlink is clicked. However, they have different behaviors and use cases.

  1. href: The href attribute is used to specify the destination URL of a hyperlink. By default, clicking on a hyperlink with an href attribute will navigate the user to that URL. However, you can override this behavior by assigning a JavaScript function to the href attribute, using the javascript: protocol.
<a>Click me!</a>

In this approach, the myFunction function will be executed when the hyperlink is clicked. However, note that using href="javascript:" is considered bad practice due to security concerns and non-standard behavior, especially with modern web development practices.

  1. onclick: The onclick attribute is used to assign a JavaScript function that will be executed when the element is clicked. You can assign the function directly to the onclick attribute or reference it using JavaScript code.
<a>Click me!</a>

In this approach, clicking the hyperlink will execute the myFunction function without causing any navigation. The href attribute is set to # to prevent the default navigation behavior. This approach is more commonly used and considered better practice than the href approach.

Overall, it is recommended to use the onclick attribute for executing callback functions on hyperlinks rather than using the href attribute with the javascript: protocol.

About the Author Rex

I'm a passionate tech blogger with an insatiable love for programming! From my early days tinkering with code, I've delved into web dev, mobile apps, and AI. Sharing insights and tutorials with the world is my joy, connecting me to a global community of like-minded tech enthusiasts. Python holds a special place in my heart, but I embrace all challenges. Constantly learning, I attend tech conferences, contribute to open-source projects, and engage in code review sessions. My ultimate goal is to inspire the next generation of developers and contribute positively to the ever-evolving tech landscape. Let's code together!