jquery - filter on multiple prefixes

How can I filter for all id's that begin with "pre" or "radio"?

$.each($(':input[id^="pre"]',':input[id^="radio"]').serializeArray(), function() {                                     开发者_JS百科                 

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your selector was a bit off:

$('input[id^="pre"], input[id^="radio"]').each(function () {});

or if you want to serialize the set of returned objects:

$('input[id^="pre"], input[id^="radio"]').serializeArray();

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Don't break your selectors up as separate strings:

$(':input[id^="pre"], :input[id^="radio"]')

Multiple selectors are a single string.

See this fiddle. I think this is what you're trying to do.

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$(":input[id]").filter(function() { return this.id.match(/^(pre|radio)/)});