Function createCollapsedIcon

examples/js/sidebar.js:247–249

()

//创建右侧折叠菜单
function createCollapsedIcon() {
    return $("<span class='pull-right-container'> <i class='fa fa-angle-down pull-right'></i> </span>");
}

//只处理三层节点,后续可优化
function selectMenu(id, length) {