From: Scott González Date: Fri, 2 May 2008 19:49:41 +0000 (+0000) Subject: core: Fixed #2600: jQuery.extend no longer skips over null properties. X-Git-Tag: 1.2.4b~42 X-Git-Url: https://source.dussan.org/?a=commitdiff_plain;h=35c68b4578f804bcd10fe7ee1628cbbd263c32ff;p=jquery.git core: Fixed #2600: jQuery.extend no longer skips over null properties. --- diff --git a/src/core.js b/src/core.js index 80115b442..c3cd3d8e3 100644 --- a/src/core.js +++ b/src/core.js @@ -587,7 +587,7 @@ jQuery.extend = jQuery.fn.extend = function() { target[ name ] = jQuery.extend( deep, src, copy ); // Don't bring in undefined values - else if ( copy != undefined ) + else if ( copy !== undefined ) target[ name ] = copy; } diff --git a/test/unit/core.js b/test/unit/core.js index 053803cd4..7ec825832 100644 --- a/test/unit/core.js +++ b/test/unit/core.js @@ -1025,7 +1025,7 @@ test("is(String)", function() { }); test("$.extend(Object, Object)", function() { - expect(17); + expect(20); var settings = { xnumber1: 5, xnumber2: 7, xstring1: "peter", xstring2: "pan" }, options = { xnumber2: 1, xstring2: "x", xxx: "newstring" }, @@ -1049,7 +1049,17 @@ test("$.extend(Object, Object)", function() { isObj( deep1.foo, deepmerged.foo, "Check if foo: settings must be extended" ); isObj( deep2.foo, deep2copy.foo, "Check if not deep2: options must not be modified" ); equals( deep1.foo2, document, "Make sure that a deep clone was not attempted on the document" ); - + + var nullUndef; + nullUndef = jQuery.extend({}, options, { xnumber2: null }); + ok( nullUndef.xnumber2 === null, "Check to make sure null values are copied"); + + nullUndef = jQuery.extend({}, options, { xnumber2: undefined }); + ok( nullUndef.xnumber2 === options.xnumber2, "Check to make sure undefined values are not copied"); + + nullUndef = jQuery.extend({}, options, { xnumber0: null }); + ok( nullUndef.xnumber0 === null, "Check to make sure null values are inserted"); + var target = {}; var recursive = { foo:target, bar:5 }; jQuery.extend(true, target, recursive);