• js文件读取时的进度条显示


     1 <html>
     2     <head>
     3         <title>进度条显示</title>
     4         <meta charset="UTF-8">
     5         <meta name="viewport" content="width=device-width, initial-scale=1.0">
     6         <script src="jQuery/jquery-2.0.0.min.js" type="text/javascript"></script>
     7         <link href="../bootstrap-3.3.7-dist/css/bootstrap.min.css" rel="stylesheet" type="text/css"/>
     8         <script src="../bootstrap-3.3.7-dist/js/bootstrap.min.js" type="text/javascript"></script>
     9         <script src="jQuery/zip.js" type="text/javascript"></script>
    10        
    11     </head>
    12     <body>
    13 <div class="table_div" style="border: 1px solid #ddd;padding-top: 10px;">
    14 <table class="mytable " width="200" style="table-layout:fixed;">
    15 <tbody>
    16 <tr id="newmain_tr">
    17 <td id="newAdd_MainImgTD" class="add_myimg" style="display: block;">
    18 <img src="img/add.png" class="gameImg">
    19 <input type="file" multiple="" id="newAdd_MainImg" class="img_up" name="upload-file" onchange="consult_launch.newAdd_MainImg(this)">
    20 </td>
    21 </tr>
    22 </tbody>
    23 </table>
    24 </div>
    25 
    26         <div class="me" id="add_info" style="400px;height:50px;margin-top: 250px;margin-left: 800px; display: none">
    27             <div class="m" id="out" style="height:20px;position:relative">
    28                 <div class="m" id='perentage' style="height:20px;border: 1px solid #cccccc;color: red;text-align:center;"></div>
    29                 <div class="m" id="inner" style="height:20px;background: green;position:relative;bottom:20px;z-index: -1"></div>
    30             </div>"
    31         </div>  
    32 
    33     </body>
    34 </html>

      

            <script>
                consult_launch.newAdd_MainImg = function (e)
                {
                    var files = [];
                    files = e.files;
                    if (files != null && files.length > 0)
                    {
                        var totalSize = 0;
                        for (var ii = 0; ii < files.length; ii++) {
                            totalSize += files[ii].size;
                        }
                        function nextimg() {
                            if (i < files.length) {
                                addfileList.push(files[i]);
                                var reader = new FileReader();
                                var currentSize = 0;
                                reader.onprogress = function (e) {//此方法只代表当前的文件
                                    console.log("sfg");
                                    $("#add_info").css("display", "block");
                                    currentSize = e.loaded;
                                    for (var j = 0; j < i; j++) {//累加之前已读取的文件
                                        currentSize += files[j].size;
                                    }
                                    var perentage = ((currentSize / totalSize) * 100).toFixed(2);
                                    $("#inner").css({
                                         perentage + "%"
                                    });
                                    $("#perentage").html(perentage + "%");
                                }
                                reader.onload = function (e) {//单个的
                                    var lis = "";
                                    lis += '<td class="maintd"><img id="735E82FF3A508294" src="' + e.target.result + '" class="gameImg" data-toggle="modal" data-target="#img_1"></td>';
                                    $("#newAdd_MainImgTD").before(lis);
                                    i++;//只有成功了以后再加一
                                    nextimg(i);
                                }
                                reader.readAsDataURL(files[i]);
                            } else {
                                $("#newAdd_MainImg").val("");
                                setTimeout(function () {
                                    alert("读取完成!");
                                    $("#add_info").css("display", "none");
                                }, 200);
                            }
                        }
                        var i = 0;
                        nextimg(i);
                    }
                    else
                    {
                        alert("获取文件失败!");
                    }
                }
            </script>
    

      

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  • 原文地址:https://www.cnblogs.com/ouyangfeifei/p/6502415.html
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