Home  >  Article  >  Web Front-end  >  js HTML5 Ajax implements file upload progress bar function_javascript skills

js HTML5 Ajax implements file upload progress bar function_javascript skills

WBOY
WBOYOriginal
2016-05-16 15:15:551576browse

本文实例介绍了js结合HTML5 Ajax实现文件上传进度条功能,分享给大家供大家参考,具体内容如下

1.  lib.js

var Host = window.location.host;
//--Cookie
function setCookie(name,value)
{
  var Days = 30;
  var exp = new Date();
  exp.setTime(exp.getTime() + Days*24*60*60*1000);
  document.cookie = name + '='+ escape (value) + ';expires=' + exp.toGMTString();
}
function getCookie(name)
{
  var arr,reg=new RegExp('(^| )'+name+'=([^;]*)(;|$)');
  if(arr=document.cookie.match(reg))
    return unescape(arr[2]);
  else
    return null;
}
//--Dom & String
var get = {
   //-- 获得Dom Id
   Id:function(obj)
   {
     return is.object(obj) ? obj : (document.getElementById(obj));
   },
   //--获得Body
   body:function()
   {
     return document.body;
   },
   //-- 通过Html 标签取对象
   Tag:function(obj, Tagname) 
   {
    return obj.getElementsByTagName(Tagname);
   },
   //-- 通过Name 来取对象
   Name:function (Name) 
   {
     return document.getElementsByName(Name);
   },
   //-- Url编码转换
   encode:function (str) 
   {
    return encodeURIComponent(str);
   },
   filepath:function (obj,callback) 
   {
     window.URL = window.URL || window.webkitURL;
     img = new Image();
     var reader = new FileReader();
     reader.readAsDataURL(get.Id(obj).files[0]);
     reader.onload = function(e){
       callback(this.result);
       source = this.result;
     }
    // return window.URL.createObjectURL(get.Id(obj).files[0]);
   }
}
var set = {
  //-- url 跳转
  url:function(URL) 
  {
    window.location.href = URL;
  },
  //-- 页面刷新
  reload:function() 
  {
    window.location.reload();
  },
  //-- 动态设置 标签内容 @ obj 为标签内容,text 为内容
  html:function (obj, text) 
  {
     obj.innerHTML = text;
  }
}
var string = {
  //-- 将字符转换成Json
  toJson:function(str) 
  {
    return eval('('+str+')');
  },
  //-- 不区分大小写判断 相等true , 
  eqlower:function(str1, str2) 
  {
    if(str1.toLowerCase() == str2.toLowerCase()){
      return true;
    }
    return false;
  }
}
var is = {
  //-- 是否是IE浏览器,用此来判断是否支持HTML5,低于IE10的返回false,由于 IE采用 V8 JavaScript引擎
  html5:function () 
  {
    return (!/*@cc_on!@*/~0x1111111111111111) ? false : true;
  },
  //--验证身份证,并且返回身份证,性别,住址,年龄
  Card:function (sId) {
      
    var card_area={
         
        11:'北京', 12:'天津', 13:'河北', 14:'山西', 21:'辽宁', 15:'内蒙古',
 
        22:'吉林', 31:'上海', 32:'江苏', 33:'浙江', 34:'安徽', 23:'黑龙江',
 
        35:'福建', 36:'江西', 37:'山东', 41:'河南', 42:'湖北', 43:'湖南',
 
        44:'广东', 45:'广西', 46:'海南', 50:'重庆', 51:'四川', 52:'贵州',
 
        53:'云南', 54:'西藏', 61:'陕西', 62:'甘肃', 63:'青海', 64:'宁夏',
 
        65:'新疆', 71:'台湾', 81:'香港', 82:'澳门', 91:'国外'
 
      };
      var iSum=0
      var info=''
      var card_info=Array(2);
      var error = '';
      sId=sId.replace(/x$/i,'a');       
       
      if (sId.length==0){      
        error = '请填写你的身份证';
        return false;
      } 
       
      if (null == card_area[parseInt(sId.substr(0,2))]) {
        error = '非法证件你的地区填写有错误请仔细填写';
        return false;
      }
       
      sBirthday=sId.substr(6,4)+'-'+Number(sId.substr(10,2)) + '-'+Number(sId.substr(12,2));
      var d = new Date(sBirthday.replace(/-/g,'/'));
 
      if (sBirthday!=(d.getFullYear()+'-'+ (d.getMonth()+1) + '-' + d.getDate())) {
        error = '非法证件你的生日填写有错误请仔细填写';
        return false;
      }
 
      for(var i = 17; i>=0; i--)
      {
        iSum += (Math.pow(2,i) % 11) * 
        parseInt(sId.charAt(17 - i),11)
      }      
 
      if (1 != iSum%11) {
        error = '非法证号你确认你是地球人请认真填写哦~~~~'; 
        return false;
 
      }
       
      if (sId.length>19){
        error = '你确认你的身份证是有效证件?';
        return false;
      }
       
      card_info[0] = card_area[parseInt(sId.substr(0, 2))];
      card_info[1] = sBirthday;
      card_info[2] = sId.substr(16, 1) % 2 ? '男' : '女';
      return card_info;
   
  },
  //--获取变量的类型, object,string,int.....等
  type:function(type) 
  {
    if(is.object(type)) {
      return 'object';
    }else if (is.string(type)) {
      return 'string';
    }else if (is.int(type)) {
      return 'int';
    }else if (is.double(type)) {
      return 'double';
    }else {
      return 'null';
    }
  },
  //-- 变量是否是对象,返回 true|false
  object:function(type) 
  {
    return 'object' == typeof(type) ? true:false;
  },
  //-- 变量是否是字符串 , 返回 true|false
  string:function(type) 
  {
    return 'string' == typeof(type) ? true:false;
  },
  //-- 变量是否是整型,返回 true|false
  int:function(type) 
  {
    if ('number' == typeof(type)) {
      if(0 > type.toString().indexOf('.')) {
        return true;
      }
    }
    return false;
  },
  //-- 变量是否是小数,返回 true|false
  double:function(type) 
  {
    if('number' == typeof(type)) {
      if (0<=type.toString().indexOf('.')) {
        return true;
      }
    }
    return false;
  }
}
var file = {
  //--异步文件上传
  upload:function (json) 
  {  
    var post = new XMLHttpRequest();
    var FLIE = new Object();
    var json = is.object(json) &#63; json : string.toJson(json);
    var dataType = string.eqlower(json.dataType,'json') &#63; true : false;
    var fileSize = 0;
    if(!json.url&&json.error) {
      json.error(404);
      return;
    }
    if(!is.object(json.file)) {
      FLIE.id = get.Id(json.file);
      //-- 大文件处理 
      if(json.maxfile) { 
       
        //--文件总大小
        fileSize = file.getSize(FLIE.id);
        //--以2M为单位进行文件切割
        shardSize = 1024 * 1024 << 1;      
        //--总片数
        shardCount = Math.ceil(fileSize / shardSize); 
        for(var i = 0; i < shardCount; ++i)
        {
          //--计算每一片的起始与结束位置
          var start = i * shardSize;
          var end = Math.min(fileSize, start + shardSize);
          var formData = new FormData();
          //--slice方法用于切出文件的一部分          
          formData.append(json.file, FLIE.id.files[0].slice(start,end));         
          formData.append("total", shardCount); //总片数
          formData.append("index", i + 1);    //当前是第几片
          post.upload.addEventListener('progress', callback, false);
          post.open('post', json.url, true); // 异步传输
          post.send(formData);
          post.upload.onprogress = function (ev) {
           if(file.getProgress(ev) == 100) {
              json.success(ev);
           }
          }
        }
      }else {
        var formData = new FormData();
        formData.append(json.file, FLIE.id.files[0]);
        if (json.progress) {
          post.upload.addEventListener('progress', json.progress, false);
        }
        post.open('post', json.url, true); // 异步传输
        post.send(formData);
        /*post.upload.onprogress = function (ev) {
         if(file.getProgress(ev) == 100) {
            json.success(ev);
         }
        }*/
        post.onreadystatechange = function () {
          switch (post.readyState) {
            case 1:{break;}
            case 2:{break;}
            case 3:{break;}
            case 4:{
              if (post.status == 200 || post.status == 0) { 
               json.success(string.toJson(post.responseText));
              }
              break;
            }
          }
        }
      }
    }
     
  },
  //-- 获得上传文件的进度值
  getProgress:function (evt) {
    var percentComplete = Math.round(evt.loaded * 100 / evt.total);
    return percentComplete.toString();
  },
  //-- 获得文件的大小
  getSize:function (file) {
    var FILE = get.Id(file).files[0];
    var fileSize = 0;
     
    if (file.size > 1024 * 1024) {
      fileSize = (Math.round(FILE.size * 100 / (1024 * 1024)) / 100).toString();
    } else {
      fileSize = (Math.round(FILE.size * 100 / 1024) / 100).toString();
    }
    return fileSize;
  },
  //-- 获得文件的类型
  getType:function (file) {
    var FILE = get.Id(file).files[0];
    return FILE.type;
  },
  //-- 获得文件的名字
  getName:function (file) {
    var FILE = get.Id(file).files[0];
    return FILE.name;
  },
  //--包含文件
  include:function (path) {
     
  }
}
//--Ajax数据提交类
var Call = {
    /**
     * 参数为json对象|Json字符串, 
     * @type post|get 默认为get ,请求方式
     * @url String 字符串型 ,请求地址
     * @loading bool true|false 是否开启动画
     * @time int 动画时间 如果 loading 为false 则不用设置这个参数
     * @data Json | String 提交的数据
     * @sucess 回调函数 这个必须有  
     */
    Ajax:function(json){
      var json = is.object(json)&#63;json:string.toJson(json);
      var type = (json.type == undefined) || (json.type == '') &#63; 'get' : json.type; ;
      var url = (json.url == undefined) || (json.url == '') &#63; alert('请求url不能为空') : json.url;
      var loading = (json.Loading == undefined) || (json.Loading == '') &#63; false : json.Loading;    
      var time = (json.time == undefined) || (json.time == '') &#63; 2000 : json.time;  
      var dataType = string.eqlower(json.dataType,'json') &#63; 'json' : 'string';
      if(loading) { var L = Loading.start(); }
      var data = '';     
      if(is.object(json.data)) {
        if(json.data) {
          for(d in json.data) {
           data = data + d + '=' + json.data[d] + '&';
          }
        }
        if(string.eqlower(json.type,'get')) {
          data ='&#63;' + data.substring(0, data.length-1);
        }
      }else{
        if(json.data.length>=1) {
          data = json.data.indexOf('&#63;') < 0 &#63; '&#63;'+json.data:json.data+'';
        }
      }
      try {
        //--IE高版本创建XMLHTTP
        XMLHttpReq = new ActiveXObject('Msxml2.XMLHTTP');
      }
      catch(E) { 
        try { 
          XMLHttpReq = new ActiveXObject('Microsoft.XMLHTTP');//IE低版本创建XMLHTTP 
        } 
        catch(E) { 
          XMLHttpReq = new XMLHttpRequest();//兼容非IE浏览器,直接创建XMLHTTP对象 
        } 
      } 
      if(XMLHttpReq) {
        if (string.eqlower(json.type, 'post')) {          
          XMLHttpReq.open('post', url, true);
          XMLHttpReq.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
          XMLHttpReq.send(data);
        }else if (string.eqlower(json.type, 'get')) {
          XMLHttpReq.open('get', url+data, true);         
          XMLHttpReq.send(null);
        }
        XMLHttpReq.onreadystatechange = function () { 
           
          switch (XMLHttpReq.readyState) {
            case 1:{break;}
            case 2:{break;}
            case 3:{break;}
            case 4:{
              if (XMLHttpReq.status == 200 || XMLHttpReq.status == 0) { 
                if (loading) {
                  setTimeout(function(){
                    Loading.stop(L);
                    if(json.dataType == 'json') 
                     json.success(string.toJson(XMLHttpReq.responseText));
                    else
                     json.success(XMLHttpReq.responseText) 
                  }, time*1000);
                }else {
   
                    if(json.dataType == 'json') 
                     json.success(string.toJson(XMLHttpReq.responseText));
                    else
                     json.success(XMLHttpReq.responseText) 
                }
              }
              break;
            }
          }
        }
      }
    }
}
var Loading = {
  //-- Ajax动画
  start:function(){
    var d = add.Dom(document.body,'style');
    d.innerHTML = '@keyframes d{from {left:0px;}to {left:98%;}}';
    var back = add.Dom(document.body, 'div');
    var d0 = add.Dom(back, 'div');
    var d1 = add.Dom(d0, 'div');
    var d2 = add.Dom(d0, 'div');
    var d3 = add.Dom(d0, 'div');
    var d4 = add.Dom(d0, 'div');
    add.Attr(back, 'style', 'width:100%;height:100%;filter:alpha(opacity=50); -moz-opacity:0.5; opacity:0.5; background:#000; position:fixed; left:0px; top:0px; z-index;1000;');
    add.Attr(d0, 'style', 'position:relative; top:50%; width:100%; height:30px;');
    add.Attr(d1, 'style', 'height:15px; width:15px; position:absolute; background:#ABCDEF; animation:d 2s infinite; -moz-border-radius:15px; -webkit-border-radius: 15px; border-radius: 15px 15px 15px 15px; ');
    add.Attr(d2, 'style', 'height:15px; width:15px; position:absolute; background:#ABCDEF; animation:d 3s infinite; -moz-border-radius:15px; -webkit-border-radius: 15px; border-radius: 15px 15px 15px 15px; ');   
    add.Attr(d3, 'style', 'height:15px; width:15px; position:absolute; background:#ABCDEF; animation:d 4s infinite; -moz-border-radius:15px; -webkit-border-radius: 15px; border-radius: 15px 15px 15px 15px; ');
    add.Attr(d4, 'style', 'height:15px; width:15px; position:absolute; background:#ABCDEF; animation:d 5s infinite; -moz-border-radius:15px; -webkit-border-radius: 15px; border-radius: 15px 15px 15px 15px; ');   
    var div = { domback:back, dom0:d0, dom1:d1, dom2:d2, dom3:d3, dom4:d4 }
    return div;
  },
  //-- Ajax停止动画
  stop:function(d) {
    d.dom0.parentNode.removeChild(d.dom0);
    d.dom1.parentNode.removeChild(d.dom1);
    d.dom2.parentNode.removeChild(d.dom2);
    d.dom3.parentNode.removeChild(d.dom3);
    d.dom4.parentNode.removeChild(d.dom4);
    d.domback.parentNode.removeChild(d.domback);
  }
   
}
var del = {
  Dom:function(obj) {
    obj.parentNode.removeChild(obj);
  }  
}
var add = {
  //--动态添加Dom节点
  Dom:function (obj,dom) {
    var dom = document.createElement(dom);
    get.Id(obj).appendChild(dom);
    return dom;
  },
  //-- 动态添加属性
  Attr:function(obj,key,value){
    obj.setAttribute(key, value);
    return obj;
  }
}
//--URL编码
function url(Str){
  return decodeURI(Str);
}
/**
 * 模板字符串,语法标签采用<js></js> 
 * 完全遵循javascript原生语法
 * @param template
 * @param vars
 * @returns {Function}
 */
function js_template(template, vars) {
   
  //唯一分隔标志字符串
  var split = '_{' + Math.random() + '}_';
 
  //消除换行符
  var estr = template.replace(/\n|\r|\t/g, '');
 
  var js = [];
  /****
   * 匹配标签<js> ...</js>--并且替换为特定的分隔串,
   * 并将匹配的js代码放入js数组中备用
   * */
  estr = estr.replace(/<js>(.*&#63;)<\/js>/g, function ($0, $1) {
    js.push($1);
    return split;
  });
 
  /*根据特定的分隔串分隔得到普通text文本串的数组*/
  var text = estr.split(split);
  estr = " var output='';";
  /****
   * 0101010---0为text[]元素,1为js[]元素
   * 重新串起来连接为可执行eval的estr
   * **/
  for (var i = 0; i < js.length; ++i) {
    estr += 'output+=text[' + i + '];';
    estr += js[i];
 
  }
  estr += 'output+=text[' + js.length + '];';
 
  estr += 'return output;';
 
  var fun =new Function('vars','text',estr);
  return function(data){
    return fun.apply(null,[data,text]);
  }
}

2.  add.html

<!DOCTYPE html>
 
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1"><title>Lumino Pro - Dashboard</title>
<link href="__SOURCE__/css/bootstrap.min.css" rel="stylesheet">
<link href="__SOURCE__/css/datepicker3.css" rel="stylesheet">
<link href="__SOURCE__/css/styles.css" rel="stylesheet">
<link href="__SOURCE__/css/Table.css" rel="stylesheet">
<link href="__SOURCE__/css/dt.css" rel="stylesheet">
<link href="__SOURCE__/css/plus/buttons.css" rel="stylesheet">
<link href="__SOURCE__/css/file.css" rel="stylesheet">
<link href="__SOURCE__/css/webuploader.css" rel="stylesheet">
<link href="__SOURCE__/css/plus/bootstrap-switch.min.css" rel="stylesheet">
<link href='http://fonts.useso.com/css&#63;family=Lato:100,300,400,700,900,100italic,300italic,400italic,700italic,900italic' rel='stylesheet' type='text/css'>
<!--[if lt IE 9]>
<link href="__SOURCE__/css/rgba-fallback.css" rel="stylesheet">
<script src="__SOURCE__/js/html5shiv.js"></script>
<script src="__SOURCE__/js/respond.min.js"></script>
<![endif]-->
</head>
<body>
  <include file="Apps/Admin/View/include/nav.html"/>    
  <div id="sidebar-collapse" class="col-sm-3 col-lg-2 sidebar">
    <form role="search">
      <div class="form-group">
        <input type="text" class="form-control" placeholder="Search">
      </div>
    </form>
  <include file="Apps/Admin/View/include/menu.html"/>
  </div><!--/.sidebar-->   
  <div class="col-sm-9 col-sm-offset-3 col-lg-10 col-lg-offset-2 main">     
    <div class="row">
      <ol class="breadcrumb">
        <li><a href="#"><span class="glyphicon glyphicon-home"></span></a></li>
        <li class="active">Dashboard</li>
      </ol>
    </div>
    <div class="row col-no-gutter-container">
    <div class="panel panel-default">
        <div class="panel-heading">Banner添加 
          <button id='up' type="button" style='float:right; margin:4px;"' class="btn btn-default"><span class="glyphicon glyphicon-plus"></span>上传</button>
          <button id='add' type="button" style='float:right; margin:4px;"' class="btn btn-default"><span class="glyphicon glyphicon-plus"></span>确定添加</button>
        </div>
          <div class="panel-body">
            <div class="canvas-wrapper">
              <form id='banner'>
               <dl class='dt'>
                <dd><label>Banner名字</label></dd>
                <dt>
                  <div class="form-group has-success">
                    <input name='name' class="form-control" placeholder="Banner名字" value=''>
                  </div>
                </dt>
                <div style='clear:both;'></div>
                <dd><label>Banner类型:</label></dd>
                <dt>
                  <div class="form-group has-warning">
                    <select name='type' class="form-control" style='background:rgb(31,45,55); color:#FFF;'>
                      <option value='1' style=' font-size:18px;'>首页</option>
                      <option value='2' style=' font-size:18px;'>内页广告</option>
                    </select>
                  </div>
                </dt>
                <div style='clear:both;'></div>
                <dd><label>Banner链接地址:</label></dd>
                <dt>
                  <div class="form-group has-warning">
                    <input name='link' class="form-control" placeholder="Banner链接地址" value=''>
                  </div>
                </dt>
               </dl>
               <dl class='dt'>
                <dd><label>Banner上传:</label></dd>
                <dt>
                  <div class="form-group has-warning">
                    <input class="form-control" type = 'button' value='选择文件'>
                    <input id='files' type='file' class="file">
                  </div>
                </dt>
                <div style='clear:both;'></div>
                <dd><label>文件类型:</label></dd>
                <dt>
                  <div class="form-group has-warning">
                    <div id='filetype' class='left' style='padding-top:2px;'></div>
                  </div>
                </dt>
                <div style='clear:both;'></div>
                <dd><label>文件上传进度:</label></dd>
                <dt>
                  <div class='form-control' style='padding:2px; height:26px; overflow:hidden;'>
                    <!-- <div id='progress' style='background:#ABCDEF; width:0px; height:22px;'></div> -->
                    <progress id='progress' max="100" value='0' style='width:100%; height:22px; background:#30a5ff;'>o(︶︿︶)o</progress>
                    <div id='gress' height:0px; style='padding-top:2px; color:#FFF; position:relative; bottom:28px; left:40%;'></div>
                  </div>
                  <div id='fileSize' class='right' style='padding-top:2px;'>
                    <span class='left'></span>
                    <span></span>
                  </div>
                </dt>
                </dl>
              </form>
              <div style='clear:both;'></div>
              <div class='fixed-table-container' style='height:244px;'>
                <img class='left' id ='thmb' src=''>
                <div>
                  <ul class='ul-info' style='display:none;'>
                    <li><span class='left'>文件大小:</span><p>22222kb</p></li>
                    <li><span class='left'>文件路径:</span><p>22222kb</p></li>
                    <li><span class='left'>图片高度:</span><p>22222kb</p></li>
                    <li><span class='left'>图片宽度:</span><p>22222kb</p></li>
                  </ul>
                </div>
              </div>
            </div>            
          </div>
        </div>
                   
    </div>  <!--/.main-->
  </div>
               
  <script src="__SOURCE__/js/jquery-1.11.1.min.js"></script>
  <script src="__SOURCE__/js/bootstrap.min.js"></script>
  <script src="__SOURCE__/js/file.js"></script>
  <script type="text/javascript" src="__SOURCE__/js/plus/bootstrap-datetimepicker.de.js" charset="UTF-8"></script>
  <script src="__SOURCE__/js/plus/bootstrap-switch.min.js"></script>
  <script src="__SOURCE__/js/table.js"></script>
  <script type="text/javascript" src='__SOURCE__/js/lib.js'></script>
  <script>
    var data = new Object();
    get.Id('files').onchange = function () {
      get.filepath(this,function(str){
        get.Id('thmb').src = str;
      });
      set.html(filetype,file.getName('files'));
      get.Id('progress').value = 0;
      set.html(get.Id('gress'),'');
      set.html(get.Tag(get.Id('fileSize'), 'span')[0], file.getSize('files') + 'KB');
      set.html(get.Tag(get.Id('fileSize'), 'span')[1], '/0kb');
    }
    get.Id('up').onclick = function () {
      if(file.getSize('files')<=0) {
        return false;
      }
      file.upload({
        form:'banner', //form的id
        url:'{:U('Banner/add',0,0)}', //上传请求文件的地址
        //maxfile:true, //是否启用大文件上传
        dataType:'json',
        progress:function(ev) { //--上传中的进度回掉函数
          get.Id('progress').value = file.getProgress(ev);
          //获得上传进度用file.getProgress(ev)
          set.html(get.Id('gress'),file.getProgress(ev)+'%');
           
          set.html(get.Tag(get.Id('fileSize'), 'span')[1], '/' + file.getProgress(ev) * (file.getSize('files') / 100 >>0) + 'KB');
        },
        file:'files', //--文件输入框的id
        //--上传完成后,后台返回的回调函数
        success:function(e){
          set.html(get.Tag(get.Id('fileSize'), 'span')[1], '/' + file.getSize('files') + 'KB');
          set.html(get.Id('gress'),'上传完成');        
          data.bannerWidth = e.bannerWidth;
          data.bannerHeight = e.bannerHeight;
          data.bannerTyle = e.bannerTyle;
          data.bannerImg = e.bannerImg;
        }
      });
    }
    get.Id('add').onclick = function () {
      data.name = get.Name('name')[0].value;
      data.type = get.Name('type')[0].value;
      data.link = get.Name('link')[0].value;
      data.act = 'add';
      Call.Ajax({
        type:'post',  // 请求方式
        Loading:true, // 是否启动动画
        time:5,  //动画显示几秒
        url:'{:U('Banner/add',0,0)}&#63;act=add', //请求地址
        data:data,  //发送的数据 
        dataType:'json', //Ajax返回的数据类型 ,可以是String
        success:function (e) { //回调函数
          set.url(e.url);  
        }
      });
    }
  </script>
</body>
</html>

希望本文所述对大家学习javascript程序设计有所帮助。

Statement:
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn