How to have optional parameters in a function

[m2244]

In the function below I would like to be able to pass an XML file to the SWF. I would like this to be optional, so that I can use this function with SWFs that do not have XML input. Is this possible?

function loadSwfToDiv(swf_url, div_id, ww, hh)
{
	var flashvars = {};
	var params = {};
	params.wmode = "transparent";
	var attributes = {};
	swfobject.embedSWF(swf_url, div_id, ww , hh, "9.0.0", false, flashvars, params, attributes);
}

[jmrker]

Which function argument determines whether or not the function will be executed?
When "swf_url" is blank?

[m2244]

Originally Posted by jmrker

Which function argument determines whether or not the function will be executed?
When "swf_url" is blank?

The function is called from the html page. I would like to have the option to pass an XML file, OPTION.

<script type="text/javascript"> 
loadSwfToDiv("c2/data/sld10.swf", "c2",600,500)
</script> <div id="c2" />

[jmrker]

I guess I don't know enough about 'swf' files nor XML file options to be of any help.

[WolfShade]

function loadSwfToDiv(swf_url, div_id, ww, hh) {
var swf_url_var = !swf_url ? code if argument empty : code if argument not empty ;

Is this what you are asking? Basically, if an argument is not passed, default it; if it is passed, use it?

[felgall]

Put your optional parameters last when you define your JavaScript functions.

See http://javascriptexample.net/usefunction09.php for an example of how you then test if the optional value is supplied and set it to the default value if it isn't.