Obtaining the Highest z-Index using jQuery

In a page with multiple DIV elements, each possessing a unique z-index value, there's a need to identify and retrieve the highest z-index.

Initially, the attempt to retrieve the highest z-index using parseInt($("div").css("zIndex")); may fail because z-index is only effective on positioned elements. Elements with position: static won't have a z-index, resulting in incorrect values.

Instead, to accurately find the highest z-index among multiple DIV elements, employ the following approach:

var index_highest = 0;
// Assign a class to the DIVs you want to include in the search process
$("#classOfDivs").each(function() {
    // Utilize parseInt with radix for accurate parsing
    var index_current = parseInt($(this).css("zIndex"), 10);
    if (index_current > index_highest) {
        index_highest = index_current;
    }
});

This method iterates through all DIV elements with the specified class, extracting their z-index values. It continuously compares the current z-index with the highest z-index found thus far, updating index_highest to store the largest value encountered.

By employing this approach, you can efficiently retrieve the highest z-index among the desired DIV elements, ensuring precise positioning of elements based on the z-index hierarchy.