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AJAX File Upload

06.06.2007
| 18853 views |
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        Ever wanted to upload files using AJAX like in GMAIL, without reloading the page? Now you can. Cross browser method to upload files using AJAX in only 1Kb of code.
How to use <a href="http://www.webtoolkit.info/ajax-file-upload.html">AJAX file upload</a> you can find on this script homepage - <a href="http://www.webtoolkit.info/">free code and tutorials website</a>.

/**
*
*  AJAX IFRAME METHOD (AIM)
*  http://www.webtoolkit.info/
*
**/

AIM = {

	frame : function(c) {

		var n = 'f' + Math.floor(Math.random() * 99999);
		var d = document.createElement('DIV');
		d.innerHTML = '<iframe style="display:none" src="about:blank" id="'+n+'" name="'+n+'" onload="AIM.loaded(\''+n+'\')"></iframe>';
		document.body.appendChild(d);

		var i = document.getElementById(n);
		if (c && typeof(c.onComplete) == 'function') {
			i.onComplete = c.onComplete;
		}

		return n;
	},

	form : function(f, name) {
		f.setAttribute('target', name);
	},

	submit : function(f, c) {
		AIM.form(f, AIM.frame(c));
		if (c && typeof(c.onStart) == 'function') {
			return c.onStart();
		} else {
			return true;
		}
	},

	loaded : function(id) {
		var i = document.getElementById(id);
		if (i.contentDocument) {
			var d = i.contentDocument;
		} else if (i.contentWindow) {
			var d = i.contentWindow.document;
		} else {
			var d = window.frames[id].document;
		}
		if (d.location.href == "about:blank") {
			return;
		}

		if (typeof(i.onComplete) == 'function') {
			i.onComplete(d.body.innerHTML);
		}
	}

}