where is the function parameter filled?

[linspirell]

Hii.. friends i'am learning JSON Style javascript coding.. i got confused with parameter in a function. i want to implementing SWFUpload, but get stuck when customizing the Upload interface. i want to modif existing example handler.

below is part of FeaturesDemo class codes

var FeaturesDemoHandlers = {
	swfUploadLoaded: function() {
		FeaturesDemo.start(this);  // This refers to the SWFObject because SWFUpload calls this with .apply(this).
	},
	fileDialogStart : function () {
		try {
			FeaturesDemo.selEventsQueue.options[FeaturesDemo.selEventsQueue.options.length] = new Option("File Dialog Start", "");
		} catch (ex) {
			this.debug(ex);
		}
	},
 
	fileQueued : function (fileObj) {
		try {
			var queue_string = fileObj.id + ":  0%:" + fileObj.name;
			FeaturesDemo.selQueue.options[FeaturesDemo.selQueue.options.length] = new Option(queue_string, fileObj.id);
			FeaturesDemo.selEventsQueue.options[FeaturesDemo.selEventsQueue.options.length] = new Option("File Queued: " + fileObj.id, "");
		} catch (ex) { this.debug(ex); }
	}
};

and just for example, what exactly i mean, method fileQueued is called file_queued_handler : FeaturesDemoHandlers.fileQueued
fileQueued method have a parameter named fileObj. i don't know when parameter is filled? i mean like file_queued_handler : FeaturesDemoHandlers.fileQueued(the_value_of_parameter)
but i didn't have to see fileQueued() method is called with its param. and exactly it works?

var suo;
		window.onload = function() {
			// Check to see if SWFUpload is available
			if (typeof(SWFUpload) === "undefined") return;
 
			// Instantiate a SWFUpload Instance
			suo = new SWFUpload({
				// Backend Settings
				upload_url: "../featuresdemo/upload.php?get_name=get_value",	// I can pass query strings here if I want
				post_params: { "post_name1": "post_value1", "post_name2": "post_value2" }, 	// Here are some POST values to send. These can be changed dynamically
				file_post_name: "Filedata",	// This is the "name" of the file item that the server-side script will receive. Setting this doesn't work in the Linux Flash Player
 
				// File Upload Settings
				file_size_limit : "102400",	// 100MB
				file_types : "*.*",
				file_types_description : "All Files",
				file_upload_limit : "10",
 
				// Event Handler Settings
 
				file_queued_handler : FeaturesDemoHandlers.fileQueued,

thank you i'am sorry for my bad english

[chris_fuel]

The parameter is probably handled somewhere else. IE, somewhere in the code you'll have something like:

this.file_queued_handler(fileObject);

So you'd have to check the SWFUpload class to find it.

[linspirell]

I never coding a JS with JSON style before. so i don't know where is the value param come from..
after reading updated manual of SWFUpload,, i got it!
thanks for the attention