layui.use(['form', 'layer','element','upload'], function () {
var $ = layui.jquery;
var layer = layui.layer;
var form = layui.form;
var upload = layui.upload;
 
//选完文件后不自动上传
upload.render({
    elem: '#student-upload-change',
    url: '你的后台api接口',
    accept: 'file', //普通文件
    exts: 'xls|xlsx', //只允许上传excel文件
    auto: false, //是否自动上传
    field: 'student-upload-change', //重点：后台验证的表单名称
    //multiple: true,
    bindAction: '#student-upload-change-action',
    done: function(res){
        if (200 === res.code) {
            layer.msg(res.msg, {icon: 1});
        } else {
            layer.msg(res.msg, {icon: 2});
        }
    },
    error: function () {
        //请求异常回调
    }
});