validation checking on text boxes

I hv a simple feedback form page where i want to validate empty text boxes
for eg: email text box with comment area box
when user donot insert email information and comment it should provide alert mes like "Please insert ......."
then only submit form should proceed
please suggest me
Regards
happyprogrammingAsked:
Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

ho_alanCommented:
<form name=fm1 onsubmit="check()">
<input type=text name=email>
<input type=text name=comment>
</form>

<script>
function check()
{
     valid=true;
    fmSize=document.fm1.length;
    for i=0;i<fmSize;i++
       if(document.fm1.elements[i].value=""){
           alert("please insert : " +document.fm1.elements[i].name)
       valid=false;
      }
   return  valid;
}
</script>
0
happyprogrammingAuthor Commented:
This is my form page where i want to make sure user has put the valuyes

<html>
    <head>
          <title>User Feedback-From</title>
    </head>

    <body bgcolor="white" text="black" background=" "><center><font face=Courier New>

    <div align="center"><img src="reallogo.bmp" align="center" alt="LOGO"></div>
    </br>
    <center><font face="Verdana"><h2>User Feedback-Comment Form</h2>
<div align="center">
     </br>

<form method=post action="processfeedback.php">
   Your name: <br />
     <input type=text name="name" size=40><br />
   Your email address <br />
     <input type=text name="email" size=40><br />
<font size='1' color='blue'>*Please provide correct e-mail id to get reply.</font></br></br>
   <b>Your feedback:<br />
     <textarea name="feedback" rows=10 cols=70>
     </textarea><br />
     <input type=submit value="Submit  ">
     <input type=reset value="Clear All">
</form>
     </body>
0
ho_alanCommented:
this function is general checking function
it should work in your  case

<form method=post action="processfeedback.php" onsubmit="check();">

0
ho_alanCommented:
<form name=fm1 method=post action="processfeedback.php" onsubmit="check();">
0
NetwingCommented:
this should work:


<html>
    <head>
          <title>User Feedback-From</title>
             
              <script type="text/javascript">
<!--
function validateForm(objForm){
     var bValid=true;
     for (var i=0; i< objForm.elements.length && bValid;i++){
          if(objForm.elements[i].type.indexOf('select')!=-1){
                if(!(objForm.elements[i].value)){
                   bValid=false;
                    alert("Please insert ......");
                }
           }else{
               if(!objForm.elements[i].value){
                  bValid=false;
                  alert("Please insert ......");
               }
           }
   }
return bValid;
}

-->
</script>
             
             
    </head>

    <body bgcolor="white" text="black" background=" "><center><font face=Courier New>
<form method=post action="#" onSubmit="return validateForm(this)">
  <p>Your name:
    <input type=text name="name" size=40>
    <br>
    Your email address
    <input type=text name="email" size=40>
  </p>
  <p><font size='1' color='blue'>*Please provide correct e-mail id to get reply.</font>
    <br>
    Your feedback: <br>
    <textarea name="feedback" cols="50" rows="5"></textarea>
    <br>
    <input type=submit value="Submit  ">
    <input type=reset value="Clear All">
  </p>
</form>
</body>
</html>
0

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
HTML

From novice to tech pro — start learning today.

Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.