Html5 new XMLHttpRequest()监听附件上传进度html5的pushstate以及监听浏览器返回事件的实现Html5监听手机摇一摇事件的实现html5中监听canvas内部元素点击事件的三种方法html5 postMessage前端跨域并前端监听的方法示例详解Html5 监听拦截Android返回键方法Html5 APP中监听返回事件处理的方法示例使用html5新特性轻松监听任何App自带返回键的示例一个不错的HTML5 Canvas多层点击事件监听实例

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 /* 附件上传进度条 */ .process-wrapper{ -moz-user-select:none; position: fixed; left: 0; top: 0; bottom: 0; right: 0; z-index: 10000; display: none; } .process-face{ width: 100%; height: 100%; background-color: #000; opacity: 0.7; position: fixed; } .close-icon{ width: 26px; height: 26px; position: fixed; left: 50%; top: calc( 50% + 40px ); transform: translate(-50%,-50%); } .process{ width: 90%; height: 30px; background-color: #fff; border-radius: 30px; overflow: hidden; position: absolute; left: 50%; top: 50%; transform: translate(-50%,-50%); text-align: center; font-size: 14px; line-height: 30px; color: #999; } .process-inner{ width: 100%; height: 30px; position: absolute; left: 0; top: 0; background-color: #0079C1; transition: 0.1s; z-index: -1; } 

 (function(app, doc) { var $processWrap = document.getElementById("processWrap"), $closeBtn = document.getElementById("closeBtn"), xhr = new XMLHttpRequest(); doc.addEventListener('netchange', onNetChange, false); function onNetChange() { if ($processWrap.style.display != "none") { $processWrap.style.display = "none"; xhr.abort(); mui.toast('网络中断请重试'); } } doSend: function() { app.ajaxFile({ //封装好的ajax请求 url: "", data: FormData, xhr: xhr, success: function(r) { if (r == '1') { mui.toast("保存成功"); // 上传成功逻辑处理 } else { $processWrap.style.display = "none"; mui.toast(app.netError); } }, error: function(r) { $processWrap.style.display = "none"; }, progress: function(e) { if (e.lengthComputable) { var progressBar = parseInt((e.loaded / e.total) * 100); if (progressBar < 100) { $progress.innerHTML = progressBar + "%"; $processInner.style.width = progressBar + "%"; } } }, timeout:function(){ $processWrap.style.display = "none"; } }); }) mui.plusReady(function() { $closeBtn.addEventListener("tap",function(){ setTimeout(function(){ $processWrap.style.display = "none"; xhr.abort(); }, 400); }) }); })(app, document); 

 var $ajaxCount = 0; window.app = { //ajaxFile超时时间 fileTimeout: 180000, ajaxFile: function(option) { $ajaxCount++; var _ajaxCount = $ajaxCount; if (!option.error) { option.error = ajaxError; // 请求失败提示 } if (option.validateUserInfo == undefined) option.validateUserInfo = true; var xhr = option.xhr || new XMLHttpRequest(); xhr.timeout = app.fileTimeout; xhr.open('POST', app.getItem(app.localKey.url) + option.url, true); xhr.onreadystatechange = function() { if (xhr.readyState == 4 && xhr.status == 200) { var r = xhr.responseText; if (r) { r = JSON.parse(r); } if (_ajaxCount == $ajaxCount) { option.success && option.success(r); } } } xhr.upload.onprogress = function (e) { option.progress(e); } xhr.onerror = function(e) { option.error(e); // 添加 上传失败后的回调函数 } xhr.ontimeout = function(e){ option.timeout(e); app.closeWaiting(); $.toast("请求超时,请重试"); xhr.abort(); 　　} xhr.send(option.data); }, } 

 const express = require("express"); const multer = require("multer"); const expressStatic = require("express-static"); const fs = require("fs"); let server = express(); let upload = multer({ dest: __dirname+'/uploads/' }) // 处理提交文件的post请求 server.post('/upload_file', upload.single('file'), function (req, res, next) { console.log("file信息", req.file); fs.rename(req.file.path, req.file.path+"."+req.file.mimetype.split("/").pop(), ()=>{ res.send({status: 1000}) }) }) // 处理静态目录 server.use(expressStatic(__dirname+"/www")) // 监听服务 server.listen(8080, function(){ console.log("请使用浏览器访问 http://localhost:8080/") });