php+原生ajax实现图片文件上传功能实例
<!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;
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{>
.mybtn{ background-color:#FFF; line-height:14px;vertical-align:middle;border:1px solid #CDCDCD;height:30px;>
.file{ position:absolute; top:0; right:80px;>
</style>
</head>
<body>
<div>
<label>图片</label>
<br/>
<input type='text' name='textfield'>
<span>
<input type="file" name="file">
<span>
</div>
</body>
</html>
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