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>а что этот setForm делает?
Forms and File Upload
Connection Manager can automatically harvest HTML form data and prepare it for either a GET or POST request via the setForm method. When you call this method before initiating the transaction, Connection Manager constructs a GET querystring or a POST message from the form and submits it to the specified URL. To use this functionality, your form elements must have defined, non-empty string name attribute values.
setForm will encode each HTML form field's name and value using encodeURIComponent. This results in a string of UTF-8 encoded, name-value pairs. NOTE: Setting an HTTP header of "Content-Type" with a different charset value will not change the encoding of the serialized data.
If the subsequent asyncRequest is HTTP GET and has a URI querystring, the querystring resulting from setForm will be concatenated onto the URI's existing querystring. If the transaction is HTTP POST, and asyncRequest contains additional POST data -- as the fourth argument -- this data will be added to the form data to create the POST message.
// argument formId can be the id or name attribute value of the
// HTML form, or an HTML form object.
var formObject = document.getElementById('aForm');
YAHOO.util.Connect.setForm(formObject);
// This example facilitates a POST transaction. The POST data(HTML form)
// are initialized when calling setForm(), and it is automatically
// included when calling asyncRequest.
var cObj = YAHOO.util.Connect.asyncRequest('POST', 'http://www.yahoo.com', callback);
setForm can also upload files, if form elements of input type="file" are present, as part of a form submission. To enable file uploading, set the second argument of setForm to true. When the transaction is complete, the callback object's upload method will be called.
// argument formId can be the id or name attribute value of the
// HTML form, or an HTML form object.
var formObject = document.getElementById('aForm');
// the second argument is true to indicate file upload.
YAHOO.util.Connect.setForm(formObject, true);
var cObj = YAHOO.util.Connect.asyncRequest('POST', 'http://www.yahoo.com', callback);
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