Why Isn't My JavaScript Function Called When a Link Is Clicked?
Dec 29, 2024 am 03:13 AM
JavaScript Function Not Invoked When Link Clicked
In this scenario, you have a web page with a sidebar navigation containing links that aim to modify the source of an iFrame by clicking them. However, despite using JavaScript to accomplish this, the desired functionality isn't triggered.
Cause:
After reviewing the code you provided, it is apparent that you neglected to call the getContent function by omitting the parentheses after its name:
<a href="#" onclick='getContent()'> LoremIpsum</a>
Corrections:
To resolve the issue, it's crucial to include the parentheses after the function call:
<a href="#" onclick='getContent()'> LoremIpsum</a>
Additional Guidelines:
While resolving this particular issue, it's worth considering some general best practices for web development:
- Avoid Inline Event Attributes: Utilizing HTML event attributes (e.g., onclick) is discouraged for several reasons, including difficulty in debugging, duplication, poor scalability, and deviations from the separation of concerns approach.
- Use 'addEventListener()': Instead of inline event handlers, it's recommended to define event handlers within JavaScript and use the 'addEventListener()' method.
- Employ Buttons Instead of Hyperlinks: If triggering JavaScript functionality is the goal, it's preferable to use buttons over hyperlinks. However, if hyperlinks are necessary, ensure to set the 'href' attribute to '#' to prevent native navigation.
Example Code:
Here's an updated version of your code that incorporates the necessary changes:
<button>
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