jQuery XPath插件设置属性

Question

This question is about Sergey Ilinsky's jQuery XPath plugin. I have an xml file which I navigate it through this plugin. The file itself is not important to see. The question is more related to functionality of the plugin.

        var elemList = $(xmlDoc).xpath("call-script/option" + xpathExtension);
        for (var i = 0; i < elemList.length; i++) {
            if (elemList[i].getAttribute('text') != null) {
                alert(elemList[i].getAttribute('text'));
                //elemList[i].getAttribute('text') = 'example';
            }
        }

I would like to set the text attribute of the selected node as shown in commented out line. getAttribute works like a charm when I use it only for reading purposes. I would like to assign it with some kind of a setAttribute function which is not available. Any help from you would be much appreciated.

Plugin's link: http://plugins.jquery.com/xpath/

Plugin's version: 0.2.4

Edit: I think I should share part of my xml to give a better understanding.

<?xml version="1.0"?>
<call-script say="Good morning">
    <option text="caller asks for blah">
    ...
       ...
    ...
    </option>
    <option text="caller requests blah">
    ...
       ...
    ...
    <option text="caller would like to blah">
    ...
       ...
    ...
    </option>
</call-script>

Answer 1

You've already got jQuery, so you can be a little more efficient if you use jQuery's .attr() function, which does double-duty as both a getter and setter depending on the arguments. The $.each() function can be used here as well.

Rewriting your sample:

$.each(elemList, function(key, element) {   // iterate over each thing in elemList
    if (element.attr('text') !== null) {   // without 2nd argument, just returns the value
        alert(element.attr('text'));   // same
        element.attr('text', 'example');   // with 2nd argument, sets the value
    }
});

http://api.jquery.com/attr/

Answer 2

Looks like there is a setAttribute function as well.

 elemList[i].setAttribute('text','example');

This has fixed my problem. Sorry for hassling you.

Tutorial link: http://www.w3schools.com/xml/met_element_setattribute.asp