Question

使用html上传图片并创建java代码来跟踪上传进度
ERROR是无法改变进度加载颜色的颜色左下边是我用来上传图片的代码你可以请帮帮我
我如何改变进步的颜色

<html>
<head>
<script>
function _(el){
return document.getElementById(el);
}
function uploadFile(){
var file = _("file1").files[0];
var formdata = new FormData();
formdata.append("file1", file);
var ajax = new XMLHttpRequest();
ajax.upload.addEventListener("progress", progressHandler, false);
ajax.addEventListener("load", completeHandler, false);
ajax.addEventListener("error", errorHandler, false);
ajax.addEventListener("abort", abortHandler, false);
ajax.open("POST", "for.php");
ajax.send(formdata);
}
function progressHandler(event){
_("loaded_n_total").innerHTML = "Uploaded "+event.loaded+" bytes of "+event.total;
var percent = (event.loaded / event.total) * 100;
_("progressBar").value = Math.round(percent);
_("status").innerHTML = Math.round(percent)+"% uploaded... please wait";
}
function completeHandler(event){
_("status").innerHTML = event.target.responseText;
_("progressBar").value = 0;
}
function errorHandler(event){
_("status").innerHTML = "Upload Failed";
}
function abortHandler(event){
_("status").innerHTML = "Upload Aborted";
}
</script>
</head>
<body>
<h2>HTML5 File Upload Progress Bar Tutorial</h2>
<form id="upload_form" action="for.php"  enctype="multipart/form-data" method="post">
  <input type="file" name="file1" id="file1"><progress id="progressBar" value="0" max="100"     style="width:100px;"></progress>
<input type="button" value="Upload File" onclick="uploadFile()">
    <h3 id="status"></h3>
  <p id="loaded_n_total"></p>
</form>
</body>
</html>

for.php

<?php
$fileName = $_FILES["file1"]["name"]; // The file name
$fileTmpLoc = $_FILES["file1"]["tmp_name"]; // File in the PHP tmp folder
$fileType = $_FILES["file1"]["type"]; // The type of file it is
$fileSize = $_FILES["file1"]["size"]; // File size in bytes
$fileErrorMsg = $_FILES["file1"]["error"]; // 0 for false... and 1 for true
if (!$fileTmpLoc) { // if file not chosen
echo "ERROR: Please browse for a file before clicking the upload button.";
exit();
}
if(move_uploaded_file($fileTmpLoc, "uploads/$fileName")){
echo "$fileName upload is complete";
} else {
echo "move_uploaded_file function failed";
}
?>

这是演示http://sanojword.net23.net/PhpProject2/

Answer 1

所有浏览器和操作系统的进度条都不同。设计风格是不可靠的。但如果您仍想更改它，try this link

progress[value]::-webkit-progress-bar {
   background-color: #eee;
   border-radius: 2px;
   box-shadow: 0 2px 5px rgba(0, 0, 0, 0.25) inset;
}

使用java脚本无法更改颜色的进度条

1 个答案: