Simple code does not work javascript doest submit form if true....

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hi CG how you r doing? am editing a old site built in asp. it is just a html page... so and form is like this

<form action="viewrecords.asp" method="post">
Date<input type="text" readonly="readonly" name="theDate" id="Date"/> 
<input type="button" value="Date"
onclick="displayCalendar(document.forms[0].theDate,'yyyy/mm/dd',this)"/>

java script if return true does not submits the form

function chkvalid()
{
 if(document.getElementById("Date").value=="" &&  document.getElementById("ddlModel").value==0)
 {
  alert("he");
  return false;
 }
 else
 {
  return true;
 }
}

<input value="Show" onclick="return chkvalid();" type="button" />

Posted 5-Feb-10 22:12pm

Indrajeet Sutar

Updated 14-Feb-10 15:52pm

thatraja

v3

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4 solutions

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Christian Graus · Answer 1 · 2010-02-05T22:26:00

Have you traced the code ? looked at the source ? What makes you think that your elements have the names you used ? If it's because you gave them those names in ASP.NET, then the client side id is in the ClientID property.

However, from what you're saying, I think the main issue is that you expect a button to submit your form, for reasons that I don't understand. Why do you expect this button to submit the form ? Pls edit your post to add this info.

4277480 · Answer 2 · 2010-02-05T22:35:00

XML

<html>
<head>
<script type="text/javascript">
function chkvalid()
{
if(document.getElementById("Date").value=="" && document.getElementById("ddlModel").value=="0")
{
alert("He");
return false;
}
else
{
return true;
}
}
</script>
</head>
<body>
<form action="viewrecords.asp" method="post">
<input type="submit" onclick="return chkvalid()" value="Show" />
<input type="text"  id="Date" />
<input type="text"  id="ddlModel" />
</form>
</body>
</html>

This should do the trick.

Rod Kemp · Answer 3 · 2010-02-05T22:38:00

Couple of simple options;

Change the type from button to submit
or place document.myform.submit(); before return true; (change myForm to the name of the form)

-- EDIT --
Do option 1. change the type of the button from button to submit and it works.

XML

<html>
<head>
<title>Title</title>
<script type="text/javascript">
function chkvalid()
{
  if(document.getElementById("Date").value=="" && document.getElementById("ddlModel").value=="0")
  {
    alert("he");
    return false;
  }
  else
  {
    return true;
  }
}
</script>
</head>
<body>
<form action="viewrecords.asp" method="post">
Date<input type="text" id='Date'/><BR>
<input type="text" id='ddlModel'/><BR>
<input value="Show" onclick="return chkvalid();" type="submit" />
</form>
</body>
</html>

hansoctantan · Answer 4 · 2010-02-14T15:43:00

you can put an onsubmit event in form:

XML

<html>
<head>
<script type="text/javascript">
function chkvalid(){
if(document.getElementById("Date").value=="" && document.getElementById("ddlModel").value=="0"){
    alert("He");
    return false;
}
else{
    return true;
}
}
</script>
</head>
<body>
<form action="viewrecords.asp" method="post" onsubmit="return chkvalid()">
<input type="submit" value="Show" />
<input type="text"  id="Date" />
<input type="text"  id="ddlModel" value="0"/>
</form>
</body>
</html>

Simple code does not work javascript doest submit form if true....

4 solutions

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