Austin Cheney wrote: > Scott Sauyet wrote: >> On the other hand, can you find any better way to mimic `p.foo` than >> the following?: > > I would just use //p[@class = "foo"] > Of course, this looks for a class attribute whose value is only "foo". > Outside of jQuery I see absolutely no value in supplying multiple values > to a class attribute.
Funny the different things that we find essential. I use multiple classes all the time for styling and for JS-hooks. > But if you did you could use this XPath: p[contains(@class, 'foo')] but that matches <p class="football"/> and <div class="villainy- afoot"> which is unwanted. > It's not quite as simple as p.foo, but it's not challenging either. It > does beg the question: jQuery aside why would I ever use that except if > I did not know the full class value? Do you work only with static HTML? I work with dynamically-generated and continually modified markup. I can never count on knowing the whole class value until I already know the node. >> The only one of your list that I miss is parent. And that only >> rarely. > > I need access to ancestors all the time. Consider this example: > <div class="box"> > <h3>Some title</h3> > <p class="buttons"> > <button onclick="myfunction(this)">Trigger</button> > </p> > </div> > > The button click triggers an action. How do I find that h3 element from > The button and not other h3 elements using a CSS selector? Its common > for an element generating an event to look to the status of some nearby > ancestor element, such as if the class on the div element has changed > value. This can be summed up by saying I don't know what to do in the > absence of my family. I'm curious how you would do that with XPath inside myfunction. `this` would refer to the button which has no id or other obvious way to select the h3. How do you do it? -- Scott -- To view archived discussions from the original JSMentors Mailman list: http://www.mail-archive.com/jsmentors@jsmentors.com/ To search via a non-Google archive, visit here: http://www.mail-archive.com/jsmentors@googlegroups.com/ To unsubscribe from this group, send email to jsmentors+unsubscr...@googlegroups.com
