HTML5 表单验证

验证邮件地址

<input type="text" title="email" required pattern="[^@]+@[^@]+\.[a-zA-Z]{2,6}" />

验证密码强度

<input title="at least eight symbols containing at least one number, one lower, and one upper letter" type="text" pattern="(?=.*\d)(?=.*[a-z])(?=.*[A-Z]).{8,}" required />

验证电话号码

<input type="text" required pattern="(\+?\d[- .]*){7,13}" title="international, national or local phone number"/>

<input id="private_phone" name="private_phone" pattern="(\d{11})|^((\d{7,8})|(\d{4}|\d{3})-(\d{7,8})|(\d{4}|\d{3})-(\d{7,8})-(\d{4}|\d{3}|\d{2}|\d{1})|(\d{7,8})-(\d{4}|\d{3}|\d{2}|\d{1}))$" required="required" type="text" />