1.11.3版的jquery的开发api帮助文档。如：选择器：基本选择器（#idelement.class*selector1,selector2,selectorN）层级选择器{ancestordescendantparent>childprev+nextprev~siblings}基本筛选器{:first:not(selector):even:odd:eq(index):gt(index):lang1.9+:last:lt(index):header:animated:focus:root:target}