表单验证测试
type='email', required, 复制：a.b.c@qq.com
type='tel', required, 复制：132-0803-3621
pattern="^\d{16}$", required, 复制：0000111100001111
type='number', min='5', max='500', required
required
required
您的性别*
type='url'
required
min="2015-07-10", max="2015-12-01"
min="2015-07", max="2015-12"
maxlength="20", lang="zh"(2个字母1个汉字)
minlength="5", maxlength="200"