这篇文章主要介绍“ajax怎么显示上传进度”，在日常操作中，相信很多人在ajax怎么显示上传进度问题上存在疑惑，小编查阅了各式资料，整理出简单好用的操作方法，希望对大家解答”ajax怎么显示上传进度”的疑惑有所帮助！接下来，请跟着小编一起来学习吧！
本例用了jquery.form.js请到演示页面查看 
CSS Code
复制代码 代码如下:
<style>
form { display: block; margin: 20px auto; background: #eee; border-radius: 10px; padding: 15px }
#progress { position:relative; width:400px; border: 1px solid #ddd; padding: 1px; border-radius: 3px; }
#bar { background-color: #B4F5B4; width:0%; height:20px; border-radius: 3px; }
#percent { position:absolute; display:inline-block; top:3px; left:48%; }
</style>
XML/HTML Code
复制代码 代码如下:
<form id="myForm" action="upload.php" method="post" enctype="multipart/form-data">
<input type="file" size="60" name="myfile">
<input type="submit" value="Ajax File Upload">
</form>
<div id="progress">
<div id="bar"></div>
<div id="percent">0%</div >
</div>
<div id="message"></div>
JavaScript Code
复制代码 代码如下:
<script>
$(document).ready(function()
{
var options = {
beforeSend: function()
{
$("#progress").show();
//clear everything
$("#bar").width('0%');
$("#message").html("");
$("#percent").html("0%");
},
uploadProgress: function(event, position, total, percentComplete)
{
$("#bar").width(percentComplete+'%');
$("#percent").html(percentComplete+'%');
},
success: function()
{
$("#bar").width('100%');
$("#percent").html('100%');
},
complete: function(response)
{
$("#message").html("<font color='green'>"+response.responseText+"</font>");
},
error: function()
{
$("#message").html("<font color='red'> ERROR: unable to upload files</font>");
}
};
$("#myForm").ajaxForm(options);
});
</script>
upload.php
复制代码 代码如下:
<?php
$output_dir = "../upload/";
if(isset($_FILES["myfile"]))
{
//Filter the file types , if you want.
if ($_FILES["myfile"]["error"] > 0)
{
echo "Error: " . $_FILES["file"]["error"] . "<br>";
}
else
{
//move the uploaded file to uploads folder;
move_uploaded_file($_FILES["myfile"]["tmp_name"],$output_dir. $_FILES["myfile"]["name"]);
echo "Uploaded File :".$_FILES["myfile"]["name"];
}
}
?>
到此，关于“ajax怎么显示上传进度”的学习就结束了，希望能够解决大家的疑惑。理论与实践的搭配能更好的帮助大家学习，快去试试吧！若想继续学习更多相关知识，请继续关注编程网网站，小编会继续努力为大家带来更多实用的文章！
