javascript validation

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  • vikas1111
    New Member
    • Feb 2008
    • 122
    #1

    javascript validation

    Hi All..
    From 2 days i am learning javascript.. I have written a very basic code to accept a name and a submit boutton.. But my program is not running.. I am working in dreameweaver mx.. My problem is that when enter name and press submit boutton the name in the text box vanishes away.. and if i press submit button without entering any data no error message occurs .. can anyone help me to solve my problem pls ???
    Tags: None
    • gits
      Recognized Expert Moderator Expert
      • May 2007
      • 5390
      #2
      please show your code ...

      kind regards

        Comment

        • vikas1111
          New Member
          • Feb 2008
          • 122
          #3
          since i am not sure about my code so i am pasting all the lines without editing...

          Code:
          <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>test Document</title>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
<script language="JavaScript" type="text/javascript">
<!--
  function validt()
   { 
    valid=true;
      if(document.form1.txtname.value=="")
         { alert("srtreter");
            valid=false;
           document.form1.txtname.focus();
         }
              else{valid=true;}
              return valid:
          }
       //-->
</script> 
</head>

<body>
<form name="form1" method="post" action="" onSubmit="return validt();">
<p>Name 
    <input type="text" name="txtname">
</p>
<p>
  <input type="submit" name="Submit" value="Submit">
</p>
</form>
</body>
</html>

            Comment

            • gits
              Recognized Expert Moderator Expert
              • May 2007
              • 5390
              #4
              try the following:

              [CODE=javascript]function validt() {
              var node = document.form1. txtname;
              var valid = node.value != '';

              if (!valid) {
              alert('srtreter ');
              node.focus();
              }

              return valid:
              }
              [/CODE]

                Comment

                • vikas1111
                  New Member
                  • Feb 2008
                  • 122
                  #5
                  No its not working..No message appears when i press submit button without entering data into text box...

                    Comment

                    • gits
                      Recognized Expert Moderator Expert
                      • May 2007
                      • 5390
                      #6
                      sorry i copied your typo:

                      [CODE=javascript]return valid:[/CODE]
                      MUST be:

                      [CODE=javascript]return valid;[/CODE]
                      of course.

                      kind regards

                        Comment

                        • RamananKalirajan
                          Contributor
                          • Mar 2008
                          • 608
                          #7
                          Originally posted by gits
                          sorry i copied your typo:

                          [CODE=javascript]return valid:[/CODE]
                          MUST be:

                          [CODE=javascript]return valid;[/CODE]
                          of course.

                          kind regards

                          Code:
                          <html>
<head>
<script language="javascript">
function validThis()
{
  var x = document.getElementById('textval');
  if(x.value=="")
   {
   alert("Missing");
   return false;
  }
 return true;
}
</script>
</head>
<body>
<input type="text" name="textval" id="textval"><br/>
<input type="submit" value="submit" onclick="return validThis()">
</body>
</html>
                          Hello Friend use this code it will be useful. In most cases please use the ID instead of names that will be very useful for you

                          Regards
                          Ramanan Kalirajan

                            Comment

                            • indirareddy
                              New Member
                              • Mar 2008
                              • 14
                              #8
                              Hai This is Javascript Code


                              1 <html>

                              2. <head>

                              3. <script language="javas cript">

                              4. function check()

                              5. {

                              6. var reddy = document.getEle mentById('textv al').value;


                              7. if(reddy.value= ="")

                              8. {

                              9. alert("Please provide some things");

                              10. return false;

                              11. }


                              12. return true;


                              13. }

                              14. </script>


                              15. </head>

                              16. <body>

                              17. <input type="text" name="textval" id="textval"><b r/>

                              18. <input type="submit" value="submit" onClick="return check()">

                              19. </body>

                              20. </html>

                                Comment

                                • vikas1111
                                  New Member
                                  • Feb 2008
                                  • 122
                                  #9
                                  Originally posted by indirareddy
                                  Hai This is Javascript Code


                                  1 <html>

                                  2. <head>

                                  3. <script language="javas cript">

                                  4. function check()

                                  5. {

                                  6. var reddy = document.getEle mentById('textv al').value;


                                  7. if(reddy.value= ="")

                                  8. {

                                  9. alert("Please provide some things");

                                  10. return false;

                                  11. }


                                  12. return true;


                                  13. }

                                  14. </script>


                                  15. </head>

                                  16. <body>

                                  17. <input type="text" name="textval" id="textval"><b r/>

                                  18. <input type="submit" value="submit" onClick="return check()">

                                  19. </body>

                                  20. </html>


                                  Hi still it isnt working

                                    Comment

                                    • gits
                                      Recognized Expert Moderator Expert
                                      • May 2007
                                      • 5390
                                      #10
                                      hi ...

                                      just use the code i provided above and fix the return as i stated in post #6 ... it will work :)

                                      kind regards

                                        Comment

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