<form id="myForm" action="http://www.baidu.com"></form> <input type="text" form="myForm"> <input type="submit" form="myForm"> 指向表单元素 关于email <form id="myForm" action="http://www.baidu.com"></form> <input type=email name=email form="myForm"> <input type="submit" form="myForm"> 关于url <form id="myForm" action="http://www.baidu.com"></form> <input type=url name=url form="myForm"> <input type="submit" form="myForm"> 关于时间 <form id="myForm" action="http://www.baidu.com"></form> <input type=url name=url form="myForm"> <input type="date"> <input type=time> <input type=month> <input type=week> <input type=datetime> <input type=datetime-local/> 后边两个支持率相当差，不推荐使用 关于number <input type="number" max=10 min=0 step=2 value="5"/> 关于range <input type="range" value="100" /> <input type="range" max=10 min=0 step=1 value=5> 关于color <input type="color" value="#34538b" />
required默认验证规则 <input id=placeholder name=name required form="myForm"> <input id=placeholder name=require1 required="required" form="myForm"> 自定义验证 非常不推荐，有时候正则表达式比较多 <input name=require2 pattern="^[1-9]d{5}$" form="myForm"> maxLength <textarea id="notes" name="notes" maxLength="10"></textarea> 关于提示文字 <input id=placeholder name=require1 required="required" oninvalid="setCustomValidity('滚蛋')" form="myForm"> <input name=require2 pattern="^[1-9]d{5}$" oninput="setCustomValidity('gun')" form="myForm"> autofocus自动获得焦点 maxLength<textarea id="notes" name="notes" maxLength="10" autofocus="true"></textarea>
验证需要提交按钮点击才会生效