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jQuery#addBack supports an optional selector that can be used to filter the prior set before adding it back. Fixes #9800

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This commit is contained in:
Ben Alman 2012-05-29 12:04:27 -04:00 committed by Rick Waldron
parent 7f2cc46955
commit 02dd7c570b
2 changed files with 5 additions and 3 deletions
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5
src/traversing.js
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@ -143,8 +143,9 @@ jQuery.fn.extend({
jQuery.unique( all ) );
},
addBack: function() {
return this.add( this.prevObject );
addBack: function( selector ) {
var prior = this.prevObject;
return this.add( selector == null ? prior : prior.filter(selector) );
}
});

3
test/unit/traversing.js
View File

@ -403,11 +403,12 @@ test("has(Arrayish)", function() {
});
test("addBack()", function() {
expect(4);
expect(5);
deepEqual( jQuery("#en").siblings().addBack().get(), q("sndp", "en", "sap"), "Check for siblings and self" );
deepEqual( jQuery("#foo").children().addBack().get(), q("foo", "sndp", "en", "sap"), "Check for children and self" );
deepEqual( jQuery("#sndp, #en").parent().addBack().get(), q("foo","sndp","en"), "Check for parent and self" );
deepEqual( jQuery("#groups").parents("p, div").addBack().get(), q("qunit-fixture", "ap", "groups"), "Check for parents and self" );
deepEqual( jQuery("#select1 > option").filter(":first-child").addBack(":last-child").get(), q("option1a", "option1d"), "Should contain the last elems plus the *filtered* prior set elements" );
});
test("siblings([String])", function() {