本文主要是介绍js判断所有表单项不为空则提交表单,希望对大家解决编程问题提供一定的参考价值,需要的开发者们随着小编来一起学习吧!
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.elements[i].value==""){alert("当前表单不能有空项");document.form1.elements[i].focus();return false;}}return true;}</script></head><body><form name="form1" method="post" action="page2.html" onSubmit="return myCheck()">用户名:<input type="text" name="username"><br>性别:<input type="text" name="sex"><br>出生时间:<input type="text" name="birthday"><br><input type="submit" value="提交"></form></body>
</html>
demo2.html
<script language="Javascript">
<!--
function submit1(frm){if (document.frm.word.value=="") {alert("请输入搜索新闻内容!");document.frm.word.focus();return false;
}
return true;
} //-->
</script>
<form method="POST" action="" name="frm" οnsubmit="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" class="input" style="height: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" value="搜" name="B1" class="input1" >
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.password.focus();
return 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!=form.password2.value) {
alert('你两次输入的密码不一致,请重新输入!');
form.password2.focus();
return false;
}
return true;
}
</script><fieldset><legend>用户注册</legend><form method="post" name="form" action="user.do?method=register" onSubmit="return beforeSubmit(this);"><table border="1" width="100%" cellspacing="0" cellpadding="0"><tr><td><label>用户名:<input type="text" name="username" value=""></label></td></tr><tr><td><label>密 码:<input type="password" name="password" value=""></label></td></tr><tr><td><label>重复密码:<input type="password" name="password2" value=""></label></td></tr><tr><td><input value="注册" type="submit"> <input type="reset" value="重置"></td></tr> </table></form>
</fieldset>
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