layui单图上传

今天分享一个基于layui和tp5.1的的单图上传，带预览和删除

代码：

html

首先要引入layui插件，下载地址：https://www.layui.com
<div class="layui-form-item" id="pics">
        <div class="layui-form-label">轮播图片</div>
        <div class="layui-input-block" style="width: 70%;">
            <a id="btn-thumb">
                <img src="__STATIC__/images/upload.png" id="thumb-preview" width="60" height="60" style="cursor:pointer;border: 1px solid #f6f6f6;padding: 3px" />
            </a>
            <span class="x-red layui-word-aux">尺码为1920X500px</span>
            <div id="tips-thumb"></div>
            <input type="hidden" name="image" id="input-thumb" value="">
        </div>
    </div>首先要引