demo1.html
<html> <head> <title> </title> </title> <script type =“ text/javascript”>函数myCheck（）{for（var i = 0; i <document.form1.elements.length-length-1; i ++）{if（document.form1.form1.elements [i] elements [i] .value =======“”） document.form1.ements [i] .focus（）;返回false; }}返回true; } </script> </head> <身体> <形式名称=“ form1”方法=“ post” action =“ page2.html” onsubmit =“ return myCheck（）”>用户名：<input type type =“ text” text =“ text” name =“ username”> <br> <br> <br> <br> <br> <br> <but tput type =“ type =“提交” value =“> </form> </hody> </html> demo2.html <script language =“ javaScript”> <！ - function unfortiss1（frm）{if（document.frm.word.value = = = = = =“” method="POST" action="" name="frm" onsubmit="return submit1(this);"><select name="select0"> <option value="0">请选择一个类别</option><option value="1">新闻</option><option value="2">产品</option><option value="3">留言</option></select><input type="text" name="word" size="20" style =“高度：19px;”> <input type =“无线电” name =“ sea_cat” value =“标题”>标题<input type =“无线电” name =“ sea_cat” value =“ value =”>内容<input类型=“demo3.html
<script type =“ text/javascript”>函数beforesubmit（form）{if（form.username.value ==''）{alert（'用户名不能为空！''）; form.username.focus（）; return false;} if（fors.pass.pass.value.value =====''''''''''''''''''''密码不能为空！ false;} if（form.pass.value.length <6）{arter（'密码至少为6位，请重新输入！'）; form.pass.pass.focus（）; return false;} if（form.pass.valword.value！= form.pass.pass.pass.valword2.value） <tegend> </ligend> <形式方法=“ post” name =“ form” action =“ user.do？method = register” onsubmit =“ return beforesubmit（this）;”> <table cellpacing =“ 0” cellpadding =“ 0”> value =“”> </label> </td> </tr> <tr> <td> <td> <label>密：<input type type type =“ password” name =“ password” valit <tr> <td> <input value =“ type =“ submit”> <input type =“ reset”值=“重置”> </td> </tr> </tr> </table> </table> </form> </fieldset> </fieldset>以上这篇js判断所有表单项不为空则提交表单的实现方法就是小编分享给大家的全部内容了，希望能给大家一个参考，也希望大家多多支持武林网。，也希望大家多多支持武林网。