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Two ways to upload image files using native ajax and iframe frameworks
Two ways to upload image files using native ajax and iframe frameworks
This article mainly introduces in detail the two methods of native ajax and iframe frameworks to implement image file upload. Friends who are not familiar with ajax file upload and are interested in ajax upload can refer to it. Take a look at this article
You should be able to cite several common ways to implement the asynchronous file upload function. The more frequently used methods are native ajax and iframe frameworks to achieve image file upload. Below, I will share the images with you. There are two ways to upload files: native ajax and iframe framework, for your reference, the specific content is as follows
Method 1: Use the iframe framework to upload images
html code is as follows:
<p class="frm"> <form name="uploadFrom" id="uploadFrom" action="upload.php" method="post" target="tarframe" enctype="multipart/form-data"> <input type="file" id="upload_file" name="upfile"> </form> <iframe src="" width="0" height="0" style="display:none;" name="tarframe"></iframe> </p> <p id="msg"> </p>
index.js file:
$(function(){
$("#upload_file").change(function(){
$("#uploadFrom").submit();
});
});
function stopSend(str){
var im="<img src='upload/images/"+str+"'>";
$("#msg").append(im);
}upload.php file:
<php $file=$_FILES['upfile']; $name=rand(0,500000).dechex(rand(0,10000)).".jpg"; move_uploaded_file($file['tmp_name'],"upload/images/".$name); //调用iframe父窗口的js 函数 echo "<script>parent.stopSend('$name')</script>"; ?>
##Method 2: Original ajax file upload
<!DOCTYPE html>
<html>
<head>
<title>Html5 Ajax 上传文件</title>
<meta charset="utf-8">
<script type="text/javascript">
var xhr;
function createXMLHttpRequest()
{
if(window.ActiveXObject)
{
xhr = new ActiveXObject("Microsoft.XMLHTTP");
}
else if(window.XMLHttpRequest)
{
xhr = new XMLHttpRequest();
}
}
function UpladFile()
{
var fileObj = document.getElementById("file").files[0];
var FileController = 'upload.php';
var form = new FormData();
form.append("myfile", fileObj);
createXMLHttpRequest();
xhr.onreadystatechange = handleStateChange;
xhr.open("post", FileController, true);
xhr.send(form);
}
function handleStateChange()
{
if(xhr.readyState == 4)
{
if (xhr.status == 200 || xhr.status == 0)
{
var result = xhr.responseText;
var json = eval("(" + result + ")");
alert('图片链接:n'+json.file);
}
}
}
</script>
<style>
.txt{ height:28px; border:1px solid #cdcdcd; width:670px;}
.mybtn{ background-color:#FFF; line-height:14px;vertical-align:middle;border:1px solid #CDCDCD;height:30px; width:70px;}
.file{ position:absolute; top:0; right:80px; height:24px; filter:alpha(opacity:0);opacity: 0;width:260px }
</style>
</head>
<body>
<p class="form-group">
<label class="control-label">图片</label>
<br/>
<input type='text' name='textfield' id='textfield' class='txt' />
<span onclick="file.click()" class="mybtn">浏览...</span>
<input type="file" name="file" class="file" id="file" size="28" onchange="document.getElementById('textfield').value=this.value" />
<span onclick="UpladFile()" class="mybtn">上传</span>
</p>
</body>
</html><?php
if(isset($_FILES["myfile"]))
{
$ret = array();
$uploadDir = 'images'.DIRECTORY_SEPARATOR.date("Ymd").DIRECTORY_SEPARATOR;
$dir = dirname(FILE).DIRECTORY_SEPARATOR.$uploadDir;
file_exists($dir) || (mkdir($dir,0777,true) && chmod($dir,0777));
if(!is_array($_FILES["myfile"]["name"])) //single file
{
$fileName = time().uniqid().'.'.pathinfo($_FILES["myfile"]["name"])['extension'];
move_uploaded_file($_FILES["myfile"]["tmp_name"],$dir.$fileName);
$ret['file'] = DIRECTORY_SEPARATOR.$uploadDir.$fileName;
}
echo json_encode($ret);
}
?>Use AJAX to complete the asynchronous verification of the user name. Detailed example
jquery and iframe to create an ajax upload effect Example sharing
jQuery Ajax uses FormData to upload files and other data examples
The above is the detailed content of Two ways to upload image files using native ajax and iframe frameworks. For more information, please follow other related articles on the PHP Chinese website!
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