Comma separated list of selectors?

Question

I\'m refactoring some code at the moment and have come across a selector:

jQuery(\"tr\",\"#ctl00_MainContent_MyUserControl\").each(function(i,row) { ... }
         


        

Answer 1

Calling the jQuery() method with two arguments (selector and context) is equivalent to jQuery(context).find(selector). Thus:

jQuery("tr","#ctl00_MainContent_MyUserControl");

is equal to:

jQuery("#ctl00_MainContent_MyUserControl").find("tr");

which also happens to be the same as:

jQuery("#ctl00_MainContent_MyUserControl tr");

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My personal opinion is that the use of context only makes sense when you can pass an already selected element (jQuery or DOM), not so much when you just pass a selector (String). In that case I simply prefer to mimic the CSS selector: e.g., #ctl00_MainContent_MyUserControl tr.