Page left navigation bar_html/css_WEB-ITnose

As shown in the picture, this is a left menu (I took two pictures). The picture in front indicates the parent menu. Some parent menus contain submenus. Click on the parent menu and it will change color (as shown in the picture) Effect on the right), click on the submenu, the font of the submenu changes color, and the background of the parent menu changes color (the effect on the left side of the picture). Now the menu bar on the left is an extracted public page, and an identifier is added to each menu. When the menu is clicked , jump to the action, call the method, and then display the data on the page. The difficulty is, 1: When clicking the submenu, the parent menu must also be selected. 2: There are many parent nodes that jump to the same action, the same method, but the return page is different, so there is no way to judge even if you add an identifier. Please help me solve it.
Online. . . [img=http://b227.photo.store.qq.com/psb?/V13H6l0L0oFC2O/VdDpnR5EU02v954TJe4ENUhFMi6MoMC5rjRtt9YLKn8!/b/dMmLUIdDGAAA&bo=IAPBAQAAAAADAMY!][/img]

	$(function(){		$(".select").click(function(event) {			event.preventDefault();			alert("我不会向上冒泡了..");		});           });