Ajax: Simplify jQuery.ajaxSettings.xhr

mgol · web-flow · commit abdc89ac2e58 · 2019-08-26T19:01:26.000+02:00
Previously, jQuery.ajaxSettings.xhr, contents were wrapped in a try-catch as we defined jQuery.support.ajax & jQuery.support.cors executed during the jQuery load and we didn't want to crash if IE had native XHR disabled (which is possible). While jQuery hasn't supported the ActiveX-based XHR since 2.0, jQuery with XHR disabled could still be used for its other features in such a crippled browser. Since gh-4347, jQuery.support.ajax & jQuery.support.cors no longer exist, so we don't need the try-catch anymore. Fixes gh-1967 Closes gh-4467 Ref gh-4347
diff --git a/src/ajax/xhr.js b/src/ajax/xhr.js
@@ -6,9 +6,7 @@ define( [
 "use strict";
 
 jQuery.ajaxSettings.xhr = function() {
-	try {
-		return new window.XMLHttpRequest();
-	} catch ( e ) {}
+	return new window.XMLHttpRequest();
 };
 
 var xhrSuccessStatus = {
