Ptt 大爆卦 | Html select required - 前往 https://stackoverflow.com/questions/6048710/can-i-apply-the-required-attribute-to-select-fields-in-html5/6048891

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並前往https://stackoverflow.com/questions/6048710/can-i-apply-the-required-attribute-to-select-fields-in-html5/6048891

Can I apply the required attribute to

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