Fix #1905 bug where in IE the use of RegExp.test() was failing and ne…

…eded to be replaced with String.match().

src/ajax.js

@@ -174,7 +174,7 @@ jQuery.extend({
 		}
 
 		// Build temporary JSONP function
-		if ( s.dataType == "json" && (s.data && jsre.test( s.data ) || s.url.match(jsre)) ) {
+		if ( s.dataType == "json" && (s.data && s.data.match(jsre) || s.url.match(jsre)) ) {
 			jsonp = "jsonp" + jsc++;
 
 			// Replace the =? sequence both in the query string and the data