HTML Custom Data Attributes Not Reflecting in JavaScript - Need Debugging Tips
I've looked through the documentation and I'm still confused about I'm trying to implement I'm wondering if anyone has experience with Can someone help me understand I'm optimizing some code but I'm stuck on something that should probably be simple..... I'm sure I'm missing something obvious here, but I'm experiencing an scenario where custom data attributes in my HTML elements are not being reflected correctly in my JavaScript code. I'm using the following HTML structure for a list of items: ```html <ul id="itemList"> <li data-id="1">Item 1</li> <li data-id="2">Item 2</li> <li data-id="3">Item 3</li> </ul> ``` In my JavaScript, I try to access these attributes using `dataset`: ```javascript const items = document.querySelectorAll('#itemList li'); items.forEach(item => { console.log(item.dataset.id); }); ``` However, the console output is as follows: ``` undefined undefined undefined ``` I've verified that the HTML elements are correctly rendered, and there are no typos in the attribute names. Additionally, I confirmed that this code runs after the DOM is fully loaded using the `DOMContentLoaded` event, but I'm still working with the `undefined` scenario. I've also tried refreshing the page and clearing the cache, just in case. Can anyone point me towards what might be going wrong here? Is there a specific version requirement or a best practice I might be missing when using custom data attributes with `dataset` in JavaScript? I'm using Chrome version 95.0.4638.69. Thanks in advance for any insights! My development environment is macOS. Has anyone else encountered this? Any feedback is welcome! My development environment is CentOS. Could someone point me to the right documentation? Has anyone else encountered this? I'm working in a CentOS environment. This is my first time working with Javascript 3.9.