<form action&#61;"http://baidu.com"><input type&#61;"text" placeholder&#61;"请输入用户名" required> <input type&#61;"email" autofocus&#61;"true"><input type&#61;"tel" pattern&#61;"\d{1,5}"><input type&#61;"number"><input type&#61;"text"><input type&#61;"url"><input type&#61;"search"><input type&#61;"range" min&#61;"0" max&#61;"100" value&#61;"0" step&#61;"50"><input type&#61;"color" id&#61;"c"><input type&#61;"datetime"><input type&#61;"datetime-local"><input type&#61;"time"><input type&#61;"date"><input type&#61;"week"><input type&#61;"month"><input type&#61;"text" autocomplete&#61;"off"><input type&#61;"submit" value&#61;"提交" formaction&#61;"http://jd.com" >
form>