Demo1.html
<html> <head> <title> 提交表单页 </title> <script type = "text/javascript"> function mycheck () {for (var i = 0; i <document.form1.elements.length-1; i ++) {if (document.form1.lements [i] .value == "") {alert ("); document.form1.Elements [i] .focus (); retornar falso; }} retornar true; } </script> </ad Head> <body> <formulário de nome = "form1" method = "post" action = "page2.html" onsubMit = "return type = "submite" value = "提交"> </morm> </body> </html> Demo2.html <script linguage = "javascript"> <!-function submit1 (frm) {if (document.frm.ford.value == ") {alert (" 请输入搜索新闻内容！ 请输入搜索新闻内容！);}}; método = "post" action = "" name = "frm" onSubMit = "return submit1 (this);"> <select name = "select0"> <option value = "0"> 请选择一个类别 </pption> <option value = "1"> 新闻 </pption> <option value = "2"> 产品 </option> <pution = "> 留言 </pption> </"> option> size = "20" style = "altura: 19px;"> <input type = "radio" name = "Sea_cat" value = "标题"> 标题 <input type = "Radio" name = "Sea_cat" value = "内容"> 内容 <input Type = "submit" = "搜" Nome = "B1">>Demo3.html
<script type = "text/javascript"> function beforesubmit (form) {if (form.username.value == '') {alert ('用户名不能为空！'); form.username.focus (); return false;} if (form.password.value == ') {alert (' 密码不能为空！ '); form.}}; false;} if (form.password.value.length <6) {alert ('密码至少为 6 位 ， 请重新输入！'); form.password.focus (); return false;} if (form.password.value! <legend> 用户注册 </legend> <form method = "post" name = "form" action = "user.do?method=register" OnsubMit = "Return beforesubMit (this);"> <table Cellspacing = "0" CellPadding = "0"> <T> <t> <tabel> <ame "用户名: value = ""> </elabel> </td> </tr> <tr> <td> <belt> 密 码: <input type = "senha" name = "senha" value = ""> </cret> </td> </tr> <tr> <td> <bel> 重复密码 重复密码: <input type = "senha" name = "" senha "2 "=>"> "> <t> <td> <bel> 重复密码: <input type =" senha "name =" "senha "2". <tr> <td> <insput value = "注册" type = "submit"> <input type = "reset" value = "重置"> </td> </tr> </table> </morm> </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。