Multiple Parameters for jQuery selector? -

i looking @ jqueryui button plug-in , noticed this

$("button, input:submit, a", ".demo").button(); 

i never seen this. multiple selects in 1 jquery selector?

the second argument (".demo" in example) context, selector restricted match descendants of determined context:

$(expr, context) 

is equivalent use find method:

$(context).find(expr) 

give documentation of jquery function:

selector context

by default, selectors perform searches within dom starting @ document root. however, alternate context can given search using optional second parameter $() function. example, if within callback function wish search element, can restrict search:

$('div.foo').click(function() {   $('span', this).addclass('bar');   // find span elements   // descendants of clicked element (this) }); 

also notice selector post "button, input:submit, a", called multiple selector, , there can specify number of selectors combine single result, separating them comma.