JavaScript表单提交帮助
我试图让我的代码提醒我，如果在提交之前没有填写、检查或选择任何内容。如果没有选择一个月或一天，我也很难让它提醒我。如有任何见解或帮助，将不胜感激JavaScript表单提交帮助,javascript,forms,post,if-statement,Javascript,Forms,Post,If Statement,我试图让我的代码提醒我，如果在提交之前没有填写、检查或选择任何内容。如果没有选择一个月或一天，我也很难让它提醒我。如有任何见解或帮助，将不胜感激 <html> <head> <title>Field Trip Consent Form</title> <script type="text/javascript"> function validates() { var radioChecked = false; for(var i
<html>
<head>
<title>Field Trip Consent Form</title>
<script type="text/javascript">
function validates() {
var radioChecked = false;
for(var i=0; i< document.form1.permission.length; i++) {
if(document.form1.permission[i].checked) {
radioChecked = true;
}
}
if(radioChecked == false) {
alert("Please chose permission Status");
return false;
}
if(document.form1.txtParent.value == "") {
alert("Please type in the textbox");
return false;
}
if(document.form1.destination.value == "") {
alert("Please type in the textbox");
return false;
}
return true;
}
function validates1(){
var moMonth = document.getElementById("getMonth").value;
var moDay = document.getElementById("day").value;
if(moMonth == "") {
alert("Please select a Month");
return false;
}
if(moDay == "") {
alert("Please select a Day");
return false;
}
return true;
}
</script>
</head>
<body>
<h1>Field Trip Consent Form</h1>
<form name="form1" onsubmit="return validates(); validates1()" method="post"
action="http://legacy.jefferson.kctcs.edu/users/mark.prather/formhandler.asp">
<form>
<h2>Description of Trip</h2>
<p>Destination
<input type="text" name="destination" SIZE="50" /></p>
<p>Date of Trip
<select name="month" id='getMonth'>
<option selected value="Month">Month
<option value="Jan">Jan
<option value="Feb">Feb
<option value="Mar">Mar
<option value="Apr">Apr
<option value="May">May
<option value="Jun">Jun
<option value="Jul">Jul
<option value="Aug">Aug
<option value="Sep">Sep
<option value="Oct">Oct
<option value="Nov">Nov
<option value="Dec">Dec
</select>
<select name="day">
<option selected value="Day">Day
<option value="01">01
<option value="02">02
<option value="03">03
<option value="04">04
<option value="05">05
<option value="06">06
<option value="07">07
<option value="08">08
<option value="09">09
<option value="10">10
<option value="11">11
<option value="12">12
<option value="13">13
<option value="14">14
<option value="15">15
<option value="16">16
<option value="17">17
<option value="18">18
<option value="19">19
<option value="20">20
<option value="21">21
<option value="22">22
<option value="23">23
<option value="24">24
<option value="25">25
<option value="26">26
<option value="27">27
<option value="28">28
<option value="29">29
<option value="30">30
<option value="31">31
</select>
<select name="year">
<option selected value="2012">2012
<option value="2013">2013
<option value="2014">2014
<option value="2015">2015
</select>
<h2>Parental Information</h2>
<p>Mother's Name
<input type="text" name="txtParent" size="20" /></p>
<p>Mother's Work Phone
<input type="text" name="txtParent" size="20" /></p>
<p>Father's Name
<input type="text" name="txtParent" size="20" /></p>
<p>Father's Work Phone
<input type="text" name="txtParent" size="20" /></p>
<p><input type="radio" name="permission" value="yes" /> Permission is Granted
<input type="radio" name="permission" value="no" /> Permission is NOT Granted </p>
<p><input type="submit" value="Submit This Data" />
<input type="reset" /></p>
</form>
</body>
</html>
实地考察同意书
函数验证（）{
var radioChecked=假；
for（var i=0；i
旅行日期
月
简
二月
破坏
四月
也许
六月
七月
八月
九月
十月
十一月
12月
白天
01
02
03
04
05
06
07
08
09
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
2012
2013
2014
2015
家长信息
母亲的名字
母亲的工作电话
父亲的名字
父亲的工作电话
许可被授予
未授予许可
onsubmit="return validates(); validates1()"
validates（）validates1（）验证（）falsevalidates1（）<html>
<head>
<title>Field Trip Consent Form</title>
<script type="text/javascript">
function validates() {
var radioChecked = false;
for(var i=0; i< document.form1.permission.length; i++) {
if(document.form1.permission[i].checked) {
radioChecked = true;
}
}
if(radioChecked == false) {
alert("Please chose permission Status");
return false;
}
if(document.form1.txtParent.value == "") {
alert("Please type in the textbox");
return false;
}
if(document.form1.destination.value == "") {
alert("Please type in the destination box");
return false;
}
return true;
}
function validates1(){
var m = document.getElementById("getMonth");
var moMonth = m.options[m.selectedIndex].value;
var d = document.getElementById("day");
var moDay = d.options[d.selectedIndex].value;
if(moMonth == "Month") {
alert("Please select a Month");
return false;
}
if(moDay == "Day") {
alert("Please select a Day");
return false;
}
return true;
}
</script>
</head>
<body>
<h1>Field Trip Consent Form</h1>
<form name="form1" onsubmit="validates(),validates1();" method="post" action="/test.php">
<h2>Description of Trip</h2>
<p>Destination
<input type="text" name="destination" SIZE="50" /></p>
<p>Date of Trip
<select name="month" id="getMonth">
<option selected value="Month">Month</option>
<option value="Jan">Jan</option>
<option value="Feb">Feb</option>
<option value="Mar">Mar</option>
<option value="Apr">Apr</option>
<option value="May">May</option>
<option value="Jun">Jun</option>
<option value="Jul">Jul</option>
<option value="Aug">Aug</option>
<option value="Sep">Sep</option>
<option value="Oct">Oct</option>
<option value="Nov">Nov</option>
<option value="Dec">Dec</option>
</select>
<select name="day" id="day">
<option selected value="Day">Day
<option value="01">01</option>
<option value="02">02</option>
<option value="03">03</option>
<option value="04">04</option>
<option value="05">05</option>
<option value="06">06</option>
<option value="07">07</option>
<option value="08">08</option>
<option value="09">09</option>
<option value="10">10</option>
<option value="11">11</option>
<option value="12">12</option>
<option value="13">13</option>
<option value="14">14</option>
<option value="15">15</option>
<option value="16">16</option>
<option value="17">17</option>
<option value="18">18</option>
<option value="19">19</option>
<option value="20">20</option>
<option value="21">21</option>
<option value="22">22</option>
<option value="23">23</option>
<option value="24">24</option>
<option value="25">25</option>
<option value="26">26</option>
<option value="27">27</option>
<option value="28">28</option>
<option value="29">29</option>
<option value="30">30</option>
<option value="31">31</option>
</select>
<select name="year">
<option selected value="2012">2012</option>
<option value="2013">2013</option>
<option value="2014">2014</option>
<option value="2015">2015</option>
</select>
<h2>Parental Information</h2>
<p>Mother's Name
<input type="text" name="txtParent" size="20" /></p>
<p><input type="radio" name="permission" value="yes" /> Permission is Granted
<input type="radio" name="permission" value="no" /> Permission is NOT Granted </p>
<p><input type="submit" value="Submit This Data" />
<input type="reset" /></p>
</form>
</body>
</html>
用这个。。最棒的是我从第一个函数开始就陷入了一个循环。即使在将数据输入表单后，它也会提醒我没有。
<html>
<head>
<title>Field Trip Consent Form</title>
<script type="text/javascript">
function validates() {
var radioChecked = false;
for(var i=0; i< document.form1.permission.length; i++) {
if(document.form1.permission[i].checked) {
radioChecked = true;
}
}
if(radioChecked == false) {
alert("Please chose permission Status");
return false;
}
if(document.form1.txtParent.value == "") {
alert("Please type in the textbox");
return false;
}
if(document.form1.destination.value == "") {
alert("Please type in the destination box");
return false;
}
return true;
}
function validates1(){
var m = document.getElementById("getMonth");
var moMonth = m.options[m.selectedIndex].value;
var d = document.getElementById("day");
var moDay = d.options[d.selectedIndex].value;
if(moMonth == "Month") {
alert("Please select a Month");
return false;
}
if(moDay == "Day") {
alert("Please select a Day");
return false;
}
return true;
}
</script>
</head>
<body>
<h1>Field Trip Consent Form</h1>
<form name="form1" onsubmit="validates(),validates1();" method="post" action="/test.php">
<h2>Description of Trip</h2>
<p>Destination
<input type="text" name="destination" SIZE="50" /></p>
<p>Date of Trip
<select name="month" id="getMonth">
<option selected value="Month">Month</option>
<option value="Jan">Jan</option>
<option value="Feb">Feb</option>
<option value="Mar">Mar</option>
<option value="Apr">Apr</option>
<option value="May">May</option>
<option value="Jun">Jun</option>
<option value="Jul">Jul</option>
<option value="Aug">Aug</option>
<option value="Sep">Sep</option>
<option value="Oct">Oct</option>
<option value="Nov">Nov</option>
<option value="Dec">Dec</option>
</select>
<select name="day" id="day">
<option selected value="Day">Day
<option value="01">01</option>
<option value="02">02</option>
<option value="03">03</option>
<option value="04">04</option>
<option value="05">05</option>
<option value="06">06</option>
<option value="07">07</option>
<option value="08">08</option>
<option value="09">09</option>
<option value="10">10</option>
<option value="11">11</option>
<option value="12">12</option>
<option value="13">13</option>
<option value="14">14</option>
<option value="15">15</option>
<option value="16">16</option>
<option value="17">17</option>
<option value="18">18</option>
<option value="19">19</option>
<option value="20">20</option>
<option value="21">21</option>
<option value="22">22</option>
<option value="23">23</option>
<option value="24">24</option>
<option value="25">25</option>
<option value="26">26</option>
<option value="27">27</option>
<option value="28">28</option>
<option value="29">29</option>
<option value="30">30</option>
<option value="31">31</option>
</select>
<select name="year">
<option selected value="2012">2012</option>
<option value="2013">2013</option>
<option value="2014">2014</option>
<option value="2015">2015</option>
</select>
<h2>Parental Information</h2>
<p>Mother's Name
<input type="text" name="txtParent" size="20" /></p>
<p><input type="radio" name="permission" value="yes" /> Permission is Granted
<input type="radio" name="permission" value="no" /> Permission is NOT Granted </p>
<p><input type="submit" value="Submit This Data" />
<input type="reset" /></p>
</form>
</body>
</html>
var m = document.getElementById("getMonth");
var moMonth = m.options[m.selectedIndex].value;
var d = document.getElementById("day");
var moDay = d.options[d.selectedIndex].value;