How to use click event index in js

The property in JavaScript that gets the position of the clicked element in the parent element is element.index. It is used to determine the position of a clicked element in a list or collection, such as setting a click event on a li list item and getting its index to determine the clicked item.

Usage of click eventindexin JavaScript

Click eventindexAttribute indicates the position of the triggered element in the parent element. In JavaScript, this property can be accessed via:

element.index

Usage:

indexThe property is typically used to determine which element was clicked A position in a related list or collection. For example, the following code gets the index of a list item when it is clicked:

const listItems = document.querySelectorAll('li'); for (let i = 0; i < listItems.length; i++) { listItems[i].addEventListener('click', function() { console.log(this.index); }); }

Advantages:

• Simplifies index access to elements in a list or collection.
• Useful when you need to determine the position of the clicked element within its sibling elements.

Disadvantages:

• Only when the parent element is an ordered list (ol) ordivAvailable when using other elements.
• For nested lists or complex DOM structures, it may be difficult to accurately determine the index.

Other notes:

• indexThe attribute does not work for full page click events.
• When elements are removed or rearranged, theindexproperty will be updated accordingly.
• For lists with custom styles, theindexproperty may return incorrect values.

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