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Jonathan Grieve
Treehouse Moderator 91,252 PointsQuestion about jQuery chaining.
I've another jquery related questoon for you all.
I've got 2 examples here of method chaining in jQuery which I understand to be 2 or more methods bound to an element.
This one from the lightbox example.
var captionText = $(this).children("img").attr("alt");
And this example I found from the documentation.
$("#person").slideDown('slow')
.addClass('grouped')
.css('margin-left', '11px');
My question is this, is there a limit to how many methods you can put on a jQuery object? Do we have to worry about putting these methods in a particular order for them to work?
3 Answers
Nicholas Olsen
Front End Web Development Techdegree Student 19,342 PointsTechnically there isn't a limit to how many methods you can chain to a jQuery object.
Your second question is more difficult to answer. Most of the time I don't think you'll need to worry what order you call each method in but I also suspect there will be a few exceptions. For example, jQuery has a "clearQueue" method that may have to be called at just the right times. Its hard to generalize, but I think the answer is "No, most of the time."
Robert Bojor
Courses Plus Student 29,439 PointsHi Jonathan,
As far as I worked with jQuery and Javascript lately I never needed more than 4 or maximum 5 in a row - I don't know of a limit that applies but, technically, there shouldn't be a limit.
As far as the order of the chain goes, you have to put them in the order you need/desire, they will be executed in that order.
Jonathan Grieve
Treehouse Moderator 91,252 PointsSo the answer to take from this is "No" but when it is, learn from that experience. I consider my question answered, thanks. :-)