library-mirrors/jquery
1
0
Fork 0
mirror of https://github.com/jquery/jquery.git synced 2024-10-05 11:34:18 +00:00
Code Issues Actions 1 Packages Projects Releases Wiki Activity

Attributes: revert returning null for non-existant attributes

Browse Source 
Ref https://github.com/jquery/jquery/issues/2118
This commit is contained in:
Timmy Willison 2015-03-30 15:32:54 -04:00
parent 7b09235cee
commit 2905961bf7
2 changed files with 44 additions and 48 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
src/attributes/attr.js
View File

@ -63,7 +63,12 @@ jQuery.extend({
return ret; return ret;
} else { } else {
return jQuery.find.attr( elem, name ); ret = jQuery.find.attr( elem, name );
// Non-existent attributes return null, we normalize to undefined
return ret == null ?
undefined :
ret;
} }
}, },

85
test/unit/attributes.js
View File

@ -71,16 +71,16 @@ test( "attr(String)", function() {
equal( jQuery("#text1").attr("value", "").attr("value"), "", "Check setting the value attribute to empty string" ); equal( jQuery("#text1").attr("value", "").attr("value"), "", "Check setting the value attribute to empty string" );
equal( jQuery("<div value='t'></div>").attr("value"), "t", "Check setting custom attr named 'value' on a div" ); equal( jQuery("<div value='t'></div>").attr("value"), "t", "Check setting custom attr named 'value' on a div" );
equal( jQuery("#form").attr("blah", "blah").attr("blah"), "blah", "Set non-existent attribute on a form" ); equal( jQuery("#form").attr("blah", "blah").attr("blah"), "blah", "Set non-existent attribute on a form" );
equal( jQuery("#foo").attr("height"), null, "Non existent height attribute should return null" ); equal( jQuery("#foo").attr("height"), undefined, "Non existent height attribute should return undefined" );
// [7472] & [3113] (form contains an input with name="action" or name="id") // [7472] & [3113] (form contains an input with name="action" or name="id")
extras = jQuery("<input id='id' name='id' /><input id='name' name='name' /><input id='target' name='target' />").appendTo("#testForm"); extras = jQuery("<input id='id' name='id' /><input id='name' name='name' /><input id='target' name='target' />").appendTo("#testForm");
equal( jQuery("#form").attr("action","newformaction").attr("action"), "newformaction", "Check that action attribute was changed" ); equal( jQuery("#form").attr("action","newformaction").attr("action"), "newformaction", "Check that action attribute was changed" );
equal( jQuery("#testForm").attr("target"), null, "Retrieving target does not equal the input with name=target" ); equal( jQuery("#testForm").attr("target"), undefined, "Retrieving target does not equal the input with name=target" );
equal( jQuery("#testForm").attr("target", "newTarget").attr("target"), "newTarget", "Set target successfully on a form" ); equal( jQuery("#testForm").attr("target", "newTarget").attr("target"), "newTarget", "Set target successfully on a form" );
equal( jQuery("#testForm").removeAttr("id").attr("id"), null, "Retrieving id does not equal the input with name=id after id is removed [#7472]" ); equal( jQuery("#testForm").removeAttr("id").attr("id"), undefined, "Retrieving id does not equal the input with name=id after id is removed [#7472]" );
// Bug #3685 (form contains input with name="name") // Bug #3685 (form contains input with name="name")
equal( jQuery("#testForm").attr("name"), null, "Retrieving name does not retrieve input with name=name" ); equal( jQuery("#testForm").attr("name"), undefined, "Retrieving name does not retrieve input with name=name" );
extras.remove(); extras.remove();
equal( jQuery("#text1").attr("maxlength"), "30", "Check for maxlength attribute" ); equal( jQuery("#text1").attr("maxlength"), "30", "Check for maxlength attribute" );
@ -107,7 +107,7 @@ test( "attr(String)", function() {
body = document.body; body = document.body;
$body = jQuery( body ); $body = jQuery( body );
strictEqual( $body.attr("foo"), null, "Make sure that a non existent attribute returns null" ); strictEqual( $body.attr("foo"), undefined, "Make sure that a non existent attribute returns undefined" );
body.setAttribute( "foo", "baz" ); body.setAttribute( "foo", "baz" );
equal( $body.attr("foo"), "baz", "Make sure the dom attribute is retrieved when no expando is found" ); equal( $body.attr("foo"), "baz", "Make sure the dom attribute is retrieved when no expando is found" );
@ -139,12 +139,12 @@ test( "attr(String)", function() {
// Check value on button element (#1954) // Check value on button element (#1954)
$button = jQuery("<button>text</button>").insertAfter("#button"); $button = jQuery("<button>text</button>").insertAfter("#button");
strictEqual( $button.attr("value"), null, "Absence of value attribute on a button" ); strictEqual( $button.attr("value"), undefined, "Absence of value attribute on a button" );
equal( $button.attr( "value", "foobar" ).attr("value"), "foobar", "Value attribute on a button does not return innerHTML" ); equal( $button.attr( "value", "foobar" ).attr("value"), "foobar", "Value attribute on a button does not return innerHTML" );
equal( $button.attr("value", "baz").html(), "text", "Setting the value attribute does not change innerHTML" ); equal( $button.attr("value", "baz").html(), "text", "Setting the value attribute does not change innerHTML" );
// Attributes with a colon on a table element (#1591) // Attributes with a colon on a table element (#1591)
equal( jQuery("#table").attr("test:attrib"), null, "Retrieving a non-existent attribute on a table with a colon does not throw an error." ); equal( jQuery("#table").attr("test:attrib"), undefined, "Retrieving a non-existent attribute on a table with a colon does not throw an error." );
equal( jQuery("#table").attr( "test:attrib", "foobar" ).attr("test:attrib"), "foobar", "Setting an attribute on a table with a colon does not throw an error." ); equal( jQuery("#table").attr( "test:attrib", "foobar" ).attr("test:attrib"), "foobar", "Setting an attribute on a table with a colon does not throw an error." );
$form = jQuery("<form class='something'></form>").appendTo("#qunit-fixture"); $form = jQuery("<form class='something'></form>").appendTo("#qunit-fixture");
@ -153,12 +153,12 @@ test( "attr(String)", function() {
$a = jQuery("<a href='#' onclick='something()'>Click</a>").appendTo("#qunit-fixture"); $a = jQuery("<a href='#' onclick='something()'>Click</a>").appendTo("#qunit-fixture");
equal( $a.attr("onclick"), "something()", "Retrieve ^on attribute without anonymous function wrapper." ); equal( $a.attr("onclick"), "something()", "Retrieve ^on attribute without anonymous function wrapper." );
ok( jQuery("<div/>").attr("doesntexist") === null, "Make sure null is returned when no attribute is found." ); ok( jQuery("<div/>").attr("doesntexist") === undefined, "Make sure undefined is returned when no attribute is found." );
ok( jQuery("<div/>").attr("title") === null, "Make sure null is returned when no attribute is found." ); ok( jQuery("<div/>").attr("title") === undefined, "Make sure undefined is returned when no attribute is found." );
equal( jQuery("<div/>").attr( "title", "something" ).attr("title"), "something", "Set the title attribute." ); equal( jQuery("<div/>").attr( "title", "something" ).attr("title"), "something", "Set the title attribute." );
ok( jQuery().attr("doesntexist") === undefined, "Make sure undefined is returned when no element is there." ); ok( jQuery().attr("doesntexist") === undefined, "Make sure undefined is returned when no element is there." );
equal( jQuery("<div/>").attr("value"), null, "An unset value on a div returns null." ); equal( jQuery("<div/>").attr("value"), undefined, "An unset value on a div returns undefined." );
strictEqual( jQuery("<select><option value='property'></option></select>").attr("value"), null, "An unset value on a select returns null." ); strictEqual( jQuery("<select><option value='property'></option></select>").attr("value"), undefined, "An unset value on a select returns undefined." );
$form = jQuery("#form").attr( "enctype", "multipart/form-data" ); $form = jQuery("#form").attr( "enctype", "multipart/form-data" );
equal( $form.prop("enctype"), "multipart/form-data", "Set the enctype of a form (encoding in IE6/7 #6743)" ); equal( $form.prop("enctype"), "multipart/form-data", "Set the enctype of a form (encoding in IE6/7 #6743)" );
@ -280,7 +280,7 @@ test( "attr(String, Object)", function() {
jQuery("#name").attr( "name", "something" ); jQuery("#name").attr( "name", "something" );
equal( jQuery("#name").attr("name"), "something", "Set name attribute" ); equal( jQuery("#name").attr("name"), "something", "Set name attribute" );
jQuery("#name").attr( "name", null ); jQuery("#name").attr( "name", null );
equal( jQuery("#name").attr("name"), null, "Remove name attribute" ); equal( jQuery("#name").attr("name"), undefined, "Remove name attribute" );
$input = jQuery( "<input>", { $input = jQuery( "<input>", {
name: "something", name: "something",
@ -301,17 +301,17 @@ test( "attr(String, Object)", function() {
$input.prop( "checked", true ).prop( "checked", false ).attr( "checked", true ); $input.prop( "checked", true ).prop( "checked", false ).attr( "checked", true );
equal( $input.attr("checked"), "checked", "Set checked (verified by .attr)" ); equal( $input.attr("checked"), "checked", "Set checked (verified by .attr)" );
$input.prop( "checked", false ).prop( "checked", true ).attr( "checked", false ); $input.prop( "checked", false ).prop( "checked", true ).attr( "checked", false );
equal( $input.attr("checked"), null, "Remove checked (verified by .attr)" ); equal( $input.attr("checked"), undefined, "Remove checked (verified by .attr)" );
$input = jQuery("#text1").prop( "readOnly", true ).prop( "readOnly", false ).attr( "readonly", true ); $input = jQuery("#text1").prop( "readOnly", true ).prop( "readOnly", false ).attr( "readonly", true );
equal( $input.attr("readonly"), "readonly", "Set readonly (verified by .attr)" ); equal( $input.attr("readonly"), "readonly", "Set readonly (verified by .attr)" );
$input.prop( "readOnly", false ).prop( "readOnly", true ).attr( "readonly", false ); $input.prop( "readOnly", false ).prop( "readOnly", true ).attr( "readonly", false );
equal( $input.attr("readonly"), null, "Remove readonly (verified by .attr)" ); equal( $input.attr("readonly"), undefined, "Remove readonly (verified by .attr)" );
$input = jQuery("#check2").attr( "checked", true ).attr( "checked", false ).prop( "checked", true ); $input = jQuery("#check2").attr( "checked", true ).attr( "checked", false ).prop( "checked", true );
equal( $input[0].checked, true, "Set checked property (verified by native property)" ); equal( $input[0].checked, true, "Set checked property (verified by native property)" );
equal( $input.prop("checked"), true, "Set checked property (verified by .prop)" ); equal( $input.prop("checked"), true, "Set checked property (verified by .prop)" );
equal( $input.attr("checked"), null, "Setting checked property doesn't affect checked attribute" ); equal( $input.attr("checked"), undefined, "Setting checked property doesn't affect checked attribute" );
$input.attr( "checked", false ).attr( "checked", true ).prop( "checked", false ); $input.attr( "checked", false ).attr( "checked", true ).prop( "checked", false );
equal( $input[0].checked, false, "Clear checked property (verified by native property)" ); equal( $input[0].checked, false, "Clear checked property (verified by native property)" );
equal( $input.prop("checked"), false, "Clear checked property (verified by .prop)" ); equal( $input.prop("checked"), false, "Clear checked property (verified by .prop)" );
@ -343,13 +343,13 @@ test( "attr(String, Object)", function() {
"required": true "required": true
}); });
equal( $text.attr("autofocus"), "autofocus", "Reading autofocus attribute yields 'autofocus'" ); equal( $text.attr("autofocus"), "autofocus", "Reading autofocus attribute yields 'autofocus'" );
equal( $text.attr( "autofocus", false ).attr("autofocus"), null, "Setting autofocus to false removes it" ); equal( $text.attr( "autofocus", false ).attr("autofocus"), undefined, "Setting autofocus to false removes it" );
equal( $text.attr("required"), "required", "Reading required attribute yields 'required'" ); equal( $text.attr("required"), "required", "Reading required attribute yields 'required'" );
equal( $text.attr( "required", false ).attr("required"), null, "Setting required attribute to false removes it" ); equal( $text.attr( "required", false ).attr("required"), undefined, "Setting required attribute to false removes it" );
$details = jQuery("<details open></details>").appendTo("#qunit-fixture"); $details = jQuery("<details open></details>").appendTo("#qunit-fixture");
equal( $details.attr("open"), "open", "open attribute presence indicates true" ); equal( $details.attr("open"), "open", "open attribute presence indicates true" );
equal( $details.attr( "open", false ).attr("open"), null, "Setting open attribute to false removes it" ); equal( $details.attr( "open", false ).attr("open"), undefined, "Setting open attribute to false removes it" );
$text.attr( "data-something", true ); $text.attr( "data-something", true );
equal( $text.attr("data-something"), "true", "Set data attributes"); equal( $text.attr("data-something"), "true", "Set data attributes");
@ -377,17 +377,8 @@ test( "attr(String, Object)", function() {
jQuery.each( [ window, document, obj, "#firstp" ], function( i, elem ) { jQuery.each( [ window, document, obj, "#firstp" ], function( i, elem ) {
var oldVal = elem.nonexisting, var oldVal = elem.nonexisting,
$elem = jQuery( elem ); $elem = jQuery( elem );
// Falls back to prop, which returns undefined strictEqual( $elem.attr("nonexisting"), undefined, "attr works correctly for non existing attributes (bug #7500)." );
strictEqual( equal( $elem.attr( "nonexisting", "foo" ).attr("nonexisting"), "foo", "attr falls back to prop on unsupported arguments" );
$elem.attr( "nonexisting" ),
typeof $elem[0].getAttribute === "undefined" ? undefined : null,
"attr works correctly for non existing attributes (bug #7500)."
);
equal(
$elem.attr( "nonexisting", "foo" ).attr( "nonexisting" ),
"foo",
"attr falls back to prop on unsupported arguments"
);
elem.nonexisting = oldVal; elem.nonexisting = oldVal;
}); });
@ -403,7 +394,7 @@ test( "attr(String, Object)", function() {
table.attr("cellspacing", "2"); table.attr("cellspacing", "2");
equal( table[ 0 ]["cellSpacing"], "2", "Check cellspacing is correctly set" ); equal( table[ 0 ]["cellSpacing"], "2", "Check cellspacing is correctly set" );
equal( jQuery("#area1").attr("value"), null, "Value attribute is distinct from value property." ); equal( jQuery("#area1").attr("value"), undefined, "Value attribute is distinct from value property." );
// for #1070 // for #1070
jQuery("#name").attr( "someAttr", "0" ); jQuery("#name").attr( "someAttr", "0" );
@ -477,7 +468,7 @@ test( "attr(String, Object)", function() {
jQuery("#name").attr( "maxlength", "5" ).removeAttr("nonexisting"); jQuery("#name").attr( "maxlength", "5" ).removeAttr("nonexisting");
equal( typeof jQuery("#name").attr( "maxlength", undefined ), "object", ".attr('attribute', undefined) is chainable (#5571)" ); equal( typeof jQuery("#name").attr( "maxlength", undefined ), "object", ".attr('attribute', undefined) is chainable (#5571)" );
equal( jQuery("#name").attr( "maxlength", undefined ).attr("maxlength"), "5", ".attr('attribute', undefined) does not change value (#5571)" ); equal( jQuery("#name").attr( "maxlength", undefined ).attr("maxlength"), "5", ".attr('attribute', undefined) does not change value (#5571)" );
equal( jQuery("#name").attr( "nonexisting", undefined ).attr("nonexisting"), null, ".attr('attribute', undefined) does not create attribute (#5571)" ); equal( jQuery("#name").attr( "nonexisting", undefined ).attr("nonexisting"), undefined, ".attr('attribute', undefined) does not create attribute (#5571)" );
}); });
test( "attr - extending the boolean attrHandle", function() { test( "attr - extending the boolean attrHandle", function() {
@ -513,7 +504,7 @@ test( "attr(String, Object) - Loaded via XML fragment", function() {
$frag.attr( "test", "some value" ); $frag.attr( "test", "some value" );
equal( $frag.attr("test"), "some value", "set attribute" ); equal( $frag.attr("test"), "some value", "set attribute" );
$frag.attr( "test", null ); $frag.attr( "test", null );
equal( $frag.attr("test"), null, "remove attribute" ); equal( $frag.attr("test"), undefined, "remove attribute" );
}); });
test( "attr('tabindex')", function() { test( "attr('tabindex')", function() {
@ -521,15 +512,15 @@ test( "attr('tabindex')", function() {
// elements not natively tabbable // elements not natively tabbable
equal( jQuery("#listWithTabIndex").attr("tabindex"), "5", "not natively tabbable, with tabindex set to 0" ); equal( jQuery("#listWithTabIndex").attr("tabindex"), "5", "not natively tabbable, with tabindex set to 0" );
equal( jQuery("#divWithNoTabIndex").attr("tabindex"), null, "not natively tabbable, no tabindex set" ); equal( jQuery("#divWithNoTabIndex").attr("tabindex"), undefined, "not natively tabbable, no tabindex set" );
// anchor with href // anchor with href
equal( jQuery("#linkWithNoTabIndex").attr("tabindex"), null, "anchor with href, no tabindex set" ); equal( jQuery("#linkWithNoTabIndex").attr("tabindex"), undefined, "anchor with href, no tabindex set" );
equal( jQuery("#linkWithTabIndex").attr("tabindex"), "2", "anchor with href, tabindex set to 2" ); equal( jQuery("#linkWithTabIndex").attr("tabindex"), "2", "anchor with href, tabindex set to 2" );
equal( jQuery("#linkWithNegativeTabIndex").attr("tabindex"), "-1", "anchor with href, tabindex set to -1" ); equal( jQuery("#linkWithNegativeTabIndex").attr("tabindex"), "-1", "anchor with href, tabindex set to -1" );
// anchor without href // anchor without href
equal( jQuery("#linkWithNoHrefWithNoTabIndex").attr("tabindex"), null, "anchor without href, no tabindex set" ); equal( jQuery("#linkWithNoHrefWithNoTabIndex").attr("tabindex"), undefined, "anchor without href, no tabindex set" );
equal( jQuery("#linkWithNoHrefWithTabIndex").attr("tabindex"), "1", "anchor without href, tabindex set to 2" ); equal( jQuery("#linkWithNoHrefWithTabIndex").attr("tabindex"), "1", "anchor without href, tabindex set to 2" );
equal( jQuery("#linkWithNoHrefWithNegativeTabIndex").attr("tabindex"), "-1", "anchor without href, no tabindex set" ); equal( jQuery("#linkWithNoHrefWithNegativeTabIndex").attr("tabindex"), "-1", "anchor without href, no tabindex set" );
}); });
@ -538,7 +529,7 @@ test( "attr('tabindex', value)", function() {
expect( 9 ); expect( 9 );
var element = jQuery("#divWithNoTabIndex"); var element = jQuery("#divWithNoTabIndex");
equal( element.attr("tabindex"), null, "start with no tabindex" ); equal( element.attr("tabindex"), undefined, "start with no tabindex" );
// set a positive string // set a positive string
element.attr( "tabindex", "1" ); element.attr( "tabindex", "1" );
@ -575,10 +566,10 @@ test( "removeAttr(String)", function() {
expect( 12 ); expect( 12 );
var $first; var $first;
equal( jQuery("#mark").removeAttr("class").attr("class"), null, "remove class" ); equal( jQuery("#mark").removeAttr("class").attr("class"), undefined, "remove class" );
equal( jQuery("#form").removeAttr("id").attr("id"), null, "Remove id" ); equal( jQuery("#form").removeAttr("id").attr("id"), undefined, "Remove id" );
equal( jQuery("#foo").attr( "style", "position:absolute;" ).removeAttr("style").attr("style"), null, "Check removing style attribute" ); equal( jQuery("#foo").attr( "style", "position:absolute;" ).removeAttr("style").attr("style"), undefined, "Check removing style attribute" );
equal( jQuery("#form").attr( "style", "position:absolute;" ).removeAttr("style").attr("style"), null, "Check removing style attribute on a form" ); equal( jQuery("#form").attr( "style", "position:absolute;" ).removeAttr("style").attr("style"), undefined, "Check removing style attribute on a form" );
equal( jQuery("<div style='position: absolute'></div>").appendTo("#foo").removeAttr("style").prop("style").cssText, "", "Check removing style attribute (#9699 Webkit)" ); equal( jQuery("<div style='position: absolute'></div>").appendTo("#foo").removeAttr("style").prop("style").cssText, "", "Check removing style attribute (#9699 Webkit)" );
equal( jQuery("#fx-test-group").attr( "height", "3px" ).removeAttr("height").get( 0 ).style.height, "1px", "Removing height attribute has no effect on height set with style attribute" ); equal( jQuery("#fx-test-group").attr( "height", "3px" ).removeAttr("height").get( 0 ).style.height, "1px", "Removing height attribute has no effect on height set with style attribute" );
@ -592,7 +583,7 @@ test( "removeAttr(String)", function() {
try { try {
$first = jQuery("#first").attr( "contenteditable", "true" ).removeAttr("contenteditable"); $first = jQuery("#first").attr( "contenteditable", "true" ).removeAttr("contenteditable");
equal( $first.attr("contenteditable"), null, "Remove the contenteditable attribute" ); equal( $first.attr("contenteditable"), undefined, "Remove the contenteditable attribute" );
} catch( e ) { } catch( e ) {
ok( false, "Removing contenteditable threw an error (#10429)" ); ok( false, "Removing contenteditable threw an error (#10429)" );
} }
@ -600,7 +591,7 @@ test( "removeAttr(String)", function() {
$first = jQuery("<div Case='mixed'></div>"); $first = jQuery("<div Case='mixed'></div>");
equal( $first.attr("Case"), "mixed", "case of attribute doesn't matter" ); equal( $first.attr("Case"), "mixed", "case of attribute doesn't matter" );
$first.removeAttr("Case"); $first.removeAttr("Case");
equal( $first.attr( "Case" ), null, "mixed-case attribute was removed" ); equal( $first.attr( "Case" ), undefined, "mixed-case attribute was removed" );
}); });
test( "removeAttr(String) in XML", function() { test( "removeAttr(String) in XML", function() {
@ -612,14 +603,14 @@ test( "removeAttr(String) in XML", function() {
iwt.removeAttr("Normal"); iwt.removeAttr("Normal");
equal( iwt.attr("normal"), "ab", "Should still be there" ); equal( iwt.attr("normal"), "ab", "Should still be there" );
iwt.removeAttr("normal"); iwt.removeAttr("normal");
equal( iwt.attr("normal"), null, "Removed" ); equal( iwt.attr("normal"), undefined, "Removed" );
equal( iwt.attr("mixedCase"), "yes", "Check initial value" ); equal( iwt.attr("mixedCase"), "yes", "Check initial value" );
equal( iwt.attr("mixedcase"), null, "toLowerCase not work good" ); equal( iwt.attr("mixedcase"), undefined, "toLowerCase not work good" );
iwt.removeAttr("mixedcase"); iwt.removeAttr("mixedcase");
equal( iwt.attr("mixedCase"), "yes", "Should still be there" ); equal( iwt.attr("mixedCase"), "yes", "Should still be there" );
iwt.removeAttr("mixedCase"); iwt.removeAttr("mixedCase");
equal( iwt.attr("mixedCase"), null, "Removed" ); equal( iwt.attr("mixedCase"), undefined, "Removed" );
}); });
test( "removeAttr(Multi String, variable space width)", function() { test( "removeAttr(Multi String, variable space width)", function() {
@ -640,7 +631,7 @@ test( "removeAttr(Multi String, variable space width)", function() {
div.removeAttr( "id alt title rel " ); div.removeAttr( "id alt title rel " );
jQuery.each( tests, function( key ) { jQuery.each( tests, function( key ) {
equal( div.attr( key ), null, "Attribute `" + key + "` was removed" ); equal( div.attr( key ), undefined, "Attribute `" + key + "` was removed" );
}); });
}); });
@ -1171,7 +1162,7 @@ var testRemoveClass = function(valueObj) {
jQuery( div ).removeClass( valueObj("foo") ); jQuery( div ).removeClass( valueObj("foo") );
strictEqual( jQuery( div ).attr("class"), null, "removeClass doesn't create a class attribute" ); strictEqual( jQuery( div ).attr("class"), undefined, "removeClass doesn't create a class attribute" );
div.className = " test foo "; div.className = " test foo ";