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Fix #13797: .is with single-node context

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Richard Gibson 2013-04-20 11:40:27 -04:00
parent 85b3c82445
commit 4f786ba4d2
2 changed files with 27 additions and 16 deletions
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18
src/traversing.js
View File

@ -58,14 +58,16 @@ jQuery.fn.extend({
}, },
is: function( selector ) { is: function( selector ) {
return !!selector && ( return !!winnow(
typeof selector === "string" ? this,
// If this is a positional/relative selector, check membership in the returned set
// so $("p:first").is("p:last") won't return true for a doc with two "p". // If this is a positional/relative selector, check membership in the returned set
rneedsContext.test( selector ) ? // so $("p:first").is("p:last") won't return true for a doc with two "p".
jQuery( selector, this.context ).index( this[0] ) >= 0 : typeof selector === "string" && rneedsContext.test( selector ) ?
jQuery.filter( selector, this ).length > 0 : jQuery( selector ) :
this.filter( selector ).length > 0 ); selector || [],
false
).length;
}, },
closest: function( selectors, context ) { closest: function( selectors, context ) {

25
test/unit/traversing.js
View File

@ -141,16 +141,22 @@ test("is() with :has() selectors", function() {
}); });
test("is() with positional selectors", function() { test("is() with positional selectors", function() {
expect(24); expect(27);
var isit = function(sel, match, expect) { var
equal( jQuery( sel ).is( match ), expect, "jQuery('" + sel + "').is('" + match + "')" ); posp = jQuery(
}; "<p id='posp'><a class='firsta' href='#'><em>first</em></a>" +
"<a class='seconda' href='#'><b>test</b></a><em></em></p>"
jQuery( ).appendTo( "#qunit-fixture" ),
"<p id='posp'><a class='firsta' href='#'><em>first</em></a><a class='seconda' href='#'><b>test</b></a><em></em></p>" isit = function( sel, match, expect ) {
).appendTo( "#qunit-fixture" ); equal(
jQuery( sel ).is( match ),
expect,
"jQuery('" + sel + "').is('" + match + "')"
);
};
isit( "#posp", "p:last", true );
isit( "#posp", "#posp:first", true ); isit( "#posp", "#posp:first", true );
isit( "#posp", "#posp:eq(2)", false ); isit( "#posp", "#posp:eq(2)", false );
isit( "#posp", "#posp a:first", false ); isit( "#posp", "#posp a:first", false );
@ -179,6 +185,9 @@ test("is() with positional selectors", function() {
isit( "#posp em", "#posp a em:eq(2)", false ); isit( "#posp em", "#posp a em:eq(2)", false );
ok( jQuery("#option1b").is("#select1 option:not(:first)"), "POS inside of :not() (#10970)" ); ok( jQuery("#option1b").is("#select1 option:not(:first)"), "POS inside of :not() (#10970)" );
ok( jQuery( posp[0] ).is("p:last"), "context constructed from a single node (#13797)" );
ok( !jQuery( posp[0] ).find("#firsta").is("a:first"), "context derived from a single node (#13797)" );
}); });
test("index()", function() { test("index()", function() {