上传前检查图片是否有效--mootools
我正在使用 mootools 请求将图像数据推送到服务器以导入图像。我的问题是如何在完成请求之前确定图像路径是否有效？
这就是我现在所拥有的 -
function doUpload(){
var remoteFile = document.id('uploadRemote').get('value');
var imageRequest = new Request({
url:'index.php',
method: 'post',
data: 'path='+remoteFile,
onRequest: function() {
console.log(remoteFile);
var myimage = Asset.image(remoteFile,
{
//onError: imageRequest.cancel() // <-- this doesn't work either
onError: this.cancel()
}
);
},
onSuccess: function(response) {
alert(response);
}
}).send();
}
document.id('submit').addEvent('click', function(){
doUpload();
});
我尝试使用 Asset.image 来测试路径是否确实是图像 - 如果不是，则取消请求。然而，这并没有成功。
关于我做错了什么的任何提示吗？谢谢！
I'm using mootools request to push image data to a server to import images. My question is how to determine if an image path is valid before completing the request?
Here's what I have now--
function doUpload(){
var remoteFile = document.id('uploadRemote').get('value');
var imageRequest = new Request({
url:'index.php',
method: 'post',
data: 'path='+remoteFile,
onRequest: function() {
console.log(remoteFile);
var myimage = Asset.image(remoteFile,
{
//onError: imageRequest.cancel() // <-- this doesn't work either
onError: this.cancel()
}
);
},
onSuccess: function(response) {
alert(response);
}
}).send();
}
document.id('submit').addEvent('click', function(){
doUpload();
});
I'm trying to use Asset.image to test if a path is truly an image-- then if it's not, to cancel the request. However, it's not working out.
Any hints on what I'm doing wrong? Thanks!
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您无法从
获取所选文件的路径。因此，在上传之前您将无法加载它。您能做的最好的事情就是检查文件扩展名。编辑：也许问题出在这一行：
它应该是：
You can't get the path to the selected file from an
<input type="file" />. So, you won't be able to load it before you upload it. The best you can do is to check the file extension.Edit: Perhaps the problem is with this line:
It should be: