( selector, context, results, seed )
| 757 | } |
| 758 | |
| 759 | function Sizzle( selector, context, results, seed ) { |
| 760 | var m, i, elem, nid, match, groups, newSelector, |
| 761 | newContext = context && context.ownerDocument, |
| 762 | |
| 763 | // nodeType defaults to 9, since context defaults to document |
| 764 | nodeType = context ? context.nodeType : 9; |
| 765 | |
| 766 | results = results || []; |
| 767 | |
| 768 | // Return early from calls with invalid selector or context |
| 769 | if ( typeof selector !== "string" || !selector || |
| 770 | nodeType !== 1 && nodeType !== 9 && nodeType !== 11 ) { |
| 771 | |
| 772 | return results; |
| 773 | } |
| 774 | |
| 775 | // Try to shortcut find operations (as opposed to filters) in HTML documents |
| 776 | if ( !seed ) { |
| 777 | setDocument( context ); |
| 778 | context = context || document; |
| 779 | |
| 780 | if ( documentIsHTML ) { |
| 781 | |
| 782 | // If the selector is sufficiently simple, try using a "get*By*" DOM method |
| 783 | // (excepting DocumentFragment context, where the methods don't exist) |
| 784 | if ( nodeType !== 11 && ( match = rquickExpr.exec( selector ) ) ) { |
| 785 | |
| 786 | // ID selector |
| 787 | if ( ( m = match[ 1 ] ) ) { |
| 788 | |
| 789 | // Document context |
| 790 | if ( nodeType === 9 ) { |
| 791 | if ( ( elem = context.getElementById( m ) ) ) { |
| 792 | |
| 793 | // Support: IE, Opera, Webkit |
| 794 | // TODO: identify versions |
| 795 | // getElementById can match elements by name instead of ID |
| 796 | if ( elem.id === m ) { |
| 797 | results.push( elem ); |
| 798 | return results; |
| 799 | } |
| 800 | } else { |
| 801 | return results; |
| 802 | } |
| 803 | |
| 804 | // Element context |
| 805 | } else { |
| 806 | |
| 807 | // Support: IE, Opera, Webkit |
| 808 | // TODO: identify versions |
| 809 | // getElementById can match elements by name instead of ID |
| 810 | if ( newContext && ( elem = newContext.getElementById( m ) ) && |
| 811 | contains( context, elem ) && |
| 812 | elem.id === m ) { |
| 813 | |
| 814 | results.push( elem ); |
| 815 | return results; |
| 816 | } |
no test coverage detected