可用于大文件的哈希 (function (factory) { if (typeof exports === 'object') { // Node/CommonJS module.exports = factory(); } else if (typeof define === 'function' && define.amd) { // AMD define(factory); } else { // Browser globals (with support for web workers) var glob; try { glob = window; } catch (e) { glob = self; } glob.SparkMD5 = factory(); } }

实现html，spark-md5.js对文件进行md5的demo，将md5传至后端，进行文件比对，实现文件秒传功能