layui报错Uncaught TypeError: tree is not a function

layui报错Uncaught TypeError: tree is not a function

tree({

elem: “#classtree”

,

data: data

,

click: function (node) {

var $select = ((((this)[0].elem).parents(“.layui-form-select”);

$select.removeClass(“layui-form-selected”).find(“.layui-select-title span”).html(node.name).end().find(“input:hidden[name=‘selectID’]”).val(node.id);

}

});

这是layui的1版本写法，2版本应该这样写

tree.render({

elem: “#classtree”

,

data: data

,click: function (node) {var $select = $($(this)[0].elem).parents(".layui-form-select");$select.removeClass("layui-form-selected").find(".layui-select-title span").html(node.name).end().find("input:hidden[name='selectID']").val(node.id);}});