JQuery statistics on the size of uploaded files. jquery statistics on uploaded files

JQuery statistics on the size of uploaded files. jquery statistics on uploaded files

This document describes how jQuery calculates the size of uploaded files. Share it with you for your reference. The details are as follows:

For modern browsers (html5 supported), you can use $ (selector) [0]. files [0]. size to calculate the size of the uploaded file on the client. However, in earlier versions of IE browsers, such as IE7, IE8, or IE9, this approach is not supported, but can be implemented using ActiveXObject objects.
Copy codeThe Code is as follows: <input type = "file" name = "f" id = "f" value = "Upload file"/>
<Input type = "button" value = "Get the size of the uploaded image" id = "g"/>
@ Section scripts
{
<Script type = "text/javascript">
$ (Function (){
$ ('# G'). on ("click", function (){
GetFileSize ("f ");
});
});
Function getFileSize (eleId ){
Try {
Var size = 0;

If ($. browser. msie) {// ie old browser
Var fileMgr = new ActiveXObject ("Scripting. FileSystemObject ");
Var filePath = $ ('#' + eleId) [0]. value;
Var fileObj = fileMgr. getFile (filePath );
Size = fileObj. size; // byte
Size = size/1024; // kb
// Size = size/1024; // mb
} Else {// other browsers
Size = $ ('#' + eleId) [0]. files [0]. size; // byte
Size = size/1024; // kb
// Size = size/1024; // mb
}
Alert ('size of the uploaded file is '+ size + 'kb ');
} Catch (e ){
Alert ("error:" + e );
}
}
</Script>
}

Supplement:

To enable ActiveXObject in IE, follow these steps:

→ Tools
→ Internet Options
→ Security
→ Custom Level, enabling ActiveXObject

I hope this article will help you with jQuery programming.