CODEWITHSUNDEEP
javascriptajaxextjs
user1109842
user1109842

Reputation: 23

What is the responseXML in an ajax requests?

This is a piece of code that I am working on, however there are some issues that I do not understand:

handleGeocoderResponse: function(response, ajaxOptions, comboBoxIdentifier) {
    var self = this;
    var xml = response.responseXML ;

    // step 1: error process explicit error message, then exit out of here if we encounter an error
    var errorNode = Ext.DomQuery.selectNode("error", xml);
    if (errorNode) {
        console.log("GEOCODE ERROR: " + errorNode.firstChild.nodeValue);
        this.form.setErrorMessage(comboBoxIdentifier);
        return;
    }

the function handleGeocoderResponse represents the success function in an ext.ajax.request, what I don't understand is the var xml. What is responseXML and what exactly should return it? and what about (Ext.DomQuery.selectNode) and what its supposed to do ?

Upvotes: 1

Views: 3551

Answers (1)

JAAulde
JAAulde

Reputation: 19560

The .responseXML property of the response object given to an XMLHttpRequest's success method is a Document object representing the XML which was returned from the server after it has been parsed (if parseable XML was returned).

.selectNode is a method of Ext's DomQuery module which allows you to ask for DOM elements from a given Document or DOM node. In this case, it is asking for the error node of the Document returned from the server during the request.

Upvotes: 3

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