Comma-separated jQuery selectors performance

问题

Please advise which way using selectors in jQuery is faster:

$('.class1, .class2').html('');

or

$('.class1').html('');
$('.class2').html('');

回答1:

In terms performance they seems to be almost same(7-8%), but in terms of maintainability the first method will be better since there is no duplication of code

回答2:

check Performance

Single $('.class1, .class2').html(''); better as

1. no duplication of code
2. jQuery constructor is called only once which makes it little fast.(+3-4%)

来源：https://stackoverflow.com/questions/17972010/comma-separated-jquery-selectors-performance