I wrote a code that basically selects all input type=text element like this:
$(\'.sys input[type=text]\').each(function () {}
$('.sys').children('input[type=text], select').each(function () { ... });
EDIT: Actually this code above is equivalent to the children selector .sys > input[type=text] if you want the descendant select (.sys input[type=text]) you need to use the options given by @NiftyDude.
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