public/build/static/application.js
function computePixelPositionAndBoxSizingReliable() {
		// Support: Firefox, Android 2.3 (Prefixed box-sizing versions).
		div.style.cssText = "-webkit-box-sizing:border-box;-moz-box-sizing:border-box;" +
			"box-sizing:border-box;padding:1px;border:1px;display:block;width:4px;margin-top:1%;" +
			"position:absolute;top:1%";
		docElem.appendChild( container );

		var divStyle = window.getComputedStyle( div, null );
		pixelPositionVal = divStyle.top !== "1%";
		boxSizingReliableVal = divStyle.width === "4px";

		docElem.removeChild( container );
	}
function computePixelPositionAndBoxSizingReliable() {
		// Support: Firefox, Android 2.3 (Prefixed box-sizing versions).
		div.style.cssText = "-webkit-box-sizing:border-box;-moz-box-sizing:border-box;" +
			"box-sizing:border-box;padding:1px;border:1px;display:block;width:4px;margin-top:1%;" +
			"position:absolute;top:1%";
		docElem.appendChild( container );

		var divStyle = window.getComputedStyle( div, null );
		pixelPositionVal = divStyle.top !== "1%";
		boxSizingReliableVal = divStyle.width === "4px";

		docElem.removeChild( container );
	}
function computePixelPositionAndBoxSizingReliable ( ) { // Support: Firefox, Android 2.3 (Prefixed box-sizing versions). div . style . cssText = "-webkit-box-sizing:border-box;-moz-box-sizing:border-box;" + "box-sizing:border-box;padding:1px;border:1px;display:block;width:4px;margin-top:1%;" + "position:absolute;top:1%" ; docElem . appendChild ( container ) ; var divStyle = window . getComputedStyle ( div , null ) ; pixelPositionVal = divStyle . top !== "1%" ; boxSizingReliableVal = divStyle . width === "4px" ; docElem . removeChild ( container ) ; }
Executing both pixelPosition & boxSizingReliable tests require only one layout so they're executed at the same time to save the second computation.
Executing both pixelPosition & boxSizingReliable tests require only one layout so they re executed at the same time to save the second computation .