Offset: Send px-ed strings to .css()

An upcoming release of Migrate will generate warnings for calls to .css() that pass numbers rather than strings, see jquery/jquery-migrate#296 . At the moment, core's .offset() setter passes numbers rather than px strings so it would throw warnings. This commit fixes that.

Closes gh-4508

1 files changed, 6 insertions, 0 deletions

diff --git a/src/offset.js b/src/offset.js
index 6e9735870..62166bc99 100644
--- a/src/offset.js
+++ b/src/offset.js
@@ -63,6 +63,12 @@ jQuery.offset = {
 			options.using.call( elem, props );
 
 		} else {
+			if ( typeof props.top === "number" ) {
+				props.top += "px";
+			}
+			if ( typeof props.left === "number" ) {
+				props.left += "px";
+			}
 			curElem.css( props );
 		}
 	}