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31,206 Points

jQuery Multiple Selectors

I'm working with some jQuery code examples, and I'm having a hard time understanding why

$(var1).add(var2).css("border", "thick solid red");

works for this page, but the following doesn't

$('var1, var2').css("border", "thick solid red");

Edit: I understand that in this example the newly created elements aren't part of the actual document until appended, but I guess I'm asking if the syntax exists to do it the way I was trying, or if you have to use add(), or just use two separate statements.

4 Answers

$('var1, var2'); will match elements with tagnames of 'var1' and 'var2', respectively.

However, $(var1, var2) may be what you're looking for, perhaps?

Without the quotes, it will interpret the selector contents as variables, not text to be interpreted.

31,206 Points

I tried using

$(orchidElems, lilyElems).css("border", "thick solid red");

in the example I posted, but that only matches the first of those variables, and not the second.

My Mistake :) I didn't check your example fully:

$.merge(orchidElems, lilyElems).css({border:"thick solid red"});

Should do it.

31,206 Points

Thanks Andrew. That technique does work. The syntax is still a bit weird to me though because you can select multiple page elements like $("div, .myClass"), but it doesn't work in this example for new variables (even without the quotes).

I ended up finding a a good Stack Overflow thread. Also for anyone who comes across this, the jQuery.merge() API (merge will alter your first array parameter!)