简单示例：
<script type="text/javascript">layui.use([‘form‘, ‘layedit‘,‘element‘, ‘laydate‘,‘upload‘], function(){ ???var form = layui.form; ???var layer = layui.layer; ???var layedit = layui.layedit; ???var laydate = layui.laysdate; ???// 上传 ???var upload = layui.upload; ???var uploadInst1 = upload.render({ ???elem: ‘#uploadImgBut1‘, //绑定元素 ???url: "{:U(‘Admin/Upload/layuiupload‘)}",//上传接口 ???done: function(res){ ???????if(res[‘state‘] ==1){ ???????????layer.msg(res[‘message‘]); ???????????$("#uploadImg1").attr(‘src‘,res[‘path‘]).show(); ???????????$("input#uploadImgSrc1").val(res[‘path‘]); ????????}; ???} ???}); });</script>后台代码：
public function layuiupload(){ ???????$upload = new \Think\Upload();// 实例化上传类 ???????$imgSize = intval(CP(‘IMGSIZE‘)); ???????$imgType = CP(‘IMGTYPE‘); ???????$imgSize = !empty($imgSize) ? $imgSize : 3145728; ???????$imgType = !empty($imgType) ? explode(‘,‘,$imgType) : array(‘jpg‘,‘gif‘,‘png‘,‘jpeg‘); ???????$upload->maxSize ??= ????$imgSize;// 设置附件上传大小 ???????$upload->exts ?????= ????$imgType;// 设置附件上传类型 ???????$upload->rootPath ?= ????"./uploads/Picture/"; // 设置附件上传根目录 ???????$upload->savePath ?= ????‘‘; // 设置附件上传（子）目录 ???????$data = array(); ???????$data[‘state‘] = 1; ???????$data[‘message‘] = ‘上传成功‘; ???????$data[‘path‘] = ‘‘; ???????// 上传文件 ????????$info = $upload->upload(); ???????if(!$info){ ???????????$data[‘state‘] = 0; ???????????$data[‘message‘] =‘上传失败‘; ???????}; ???????$path = "uploads/Picture/".$info[‘file‘][‘savepath‘].$info[‘file‘][‘savename‘]; ???????$data[‘path‘] = $path; ???????echo json_encode($data);die; ???}thinkphp结合layui上传图片
原文地址：https://www.cnblogs.com/e0yu/p/9353064.html