src/css/curCSS.js


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define( [
	"../core",
	"../core/isAttached",
	"./var/getStyles"
], function( jQuery, isAttached, getStyles ) {

"use strict";

function curCSS( elem, name, computed ) {
	var ret;

	computed = computed || getStyles( elem );

	// getPropertyValue is needed for `.css('--customProperty')` (gh-3144)
	if ( computed ) {
		ret = computed.getPropertyValue( name ) || computed[ name ];

		if ( ret === "" && !isAttached( elem ) ) {
			ret = jQuery.style( elem, name );
		}
	}

	return ret !== undefined ?

		// Support: IE <=9 - 11+
		// IE returns zIndex value as an integer.
		ret + "" :
		ret;
}

return curCSS;
} );