From 27c4ea613648d9ca1759e8d3d8deb16c590ec1a2 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Mislav=20Marohni=C4=87?= 
Date: Tue, 30 Mar 2010 23:34:09 +0200
Subject: [PATCH] ensure that `undefined` is never sent as Ajax data to xhr.send()

This fixes Google Chrome making POST/PUT/DELETE requests with empty data.
When `data` isn't specified by user, its value is (naturally) `undefined`
which causes Chrome to actually send "undefined" in the HTTP request body.
---
 src/ajax.js            |    2 +-
 test/data/echoData.php |    1 +
 test/unit/ajax.js      |   13 +++++++++++++
 3 files changed, 15 insertions(+), 1 deletions(-)
 create mode 100644 test/data/echoData.php

diff --git a/src/ajax.js b/src/ajax.js
index 7cf280a..f4301f1 100644
--- a/src/ajax.js
+++ b/src/ajax.js
@@ -474,7 +474,7 @@ jQuery.extend({
 
 		// Send the data
 		try {
-			xhr.send( type === "POST" || type === "PUT" || type === "DELETE" ? s.data : null );
+			xhr.send( (type !== "GET" && s.data) || null );
 
 		} catch( sendError ) {
 			jQuery.ajax.handleError( s, xhr, null, e );
diff --git a/test/data/echoData.php b/test/data/echoData.php
new file mode 100644
index 0000000..5da01dc
--- /dev/null
+++ b/test/data/echoData.php
@@ -0,0 +1 @@
+
\ No newline at end of file
diff --git a/test/unit/ajax.js b/test/unit/ajax.js
index be4b3f0..58aa615 100644
--- a/test/unit/ajax.js
+++ b/test/unit/ajax.js
@@ -1163,6 +1163,19 @@ test("data option: evaluate function values (#2806)", function() {
 	})
 });
 
+test("data option: empty bodies for non-GET requests", function() {
+	stop();
+	jQuery.ajax({
+		url: "data/echoData.php",
+		data: undefined,
+		type: "post",
+		success: function(result) {
+			equals( result, "" );
+			start();
+		}
+	})
+});
+
 test("jQuery.ajax - If-Modified-Since support", function() {
 	expect( 3 );
 
-- 
1.6.4.1