点击 显示左边菜单

<img class="yyicon1" id="showLeft" src="${contextPath}/resources/web/images/rtk.png">

<nav class="cbp-spmenu cbp-spmenu-vertical cbp-spmenu-left" id="cbp-spmenu-s1">
<h3>Menu</h3>
<a href="${contextPath}/web/logout.htm" >退出登录</a>
</nav>
<script src="${contextPath}/resources/h5/js/classie.js"></script>
<script>
	var menuLeft = document.getElementById('cbp-spmenu-s1'),

	showLeft = document.getElementById('showLeft'),

	body = document.body;
						
	showLeft.onclick = function() {
		classie.toggle(this, 'active');
		classie.toggle(menuLeft, 'cbp-spmenu-open');
		disableOther('showLeft');
	};
	function disableOther(button) {
		if (button !== 'showLeft') {
		    classie.toggle(showLeft, 'disabled');
		}
	}

</script>