davidhund/log-highest-zIndex.js

## log-highest-zIndex.js
/**
 * Log highest z-index used on page
 * @author: davidhund / @valuedstandards
 *
 * Do not use this in (production) JS code!
 * To be used as e.g. a Chrome Devtools snippet, bookmarklet etc..
 */
(function(w,d,z) {
    console.log(`Highest z-index in use is: %d`,
        Math.max(...
            [...d.querySelectorAll('*')]
            // Only include elements with valid z-index values
            //.filter(e => !!~~w.getComputedStyle(e,null).getPropertyValue(z))
            // Commented above:
            // Filtering is actually not quite necessary since we cast to a number
            // ..so 'invalid' values return '0'...
            .map(e => ~~w.getComputedStyle(e,null).getPropertyValue(z))
        )
    );
})(window, document, 'z-index');
	/**
	* Log highest z-index used on page
	* @author: davidhund / @valuedstandards
	*
	* Do not use this in (production) JS code!
	* To be used as e.g. a Chrome Devtools snippet, bookmarklet etc..
	*/
	(function(w,d,z) {
	console.log(`Highest z-index in use is: %d`,
	Math.max(...
	[...d.querySelectorAll('*')]
	// Only include elements with valid z-index values
	//.filter(e => !!~~w.getComputedStyle(e,null).getPropertyValue(z))
	// Commented above:
	// Filtering is actually not quite necessary since we cast to a number
	// ..so 'invalid' values return '0'...
	.map(e => ~~w.getComputedStyle(e,null).getPropertyValue(z))
	)
	);
	})(window, document, 'z-index');