I have a Html page which uses Java Script and I am opening that page in WebView

My problem is when I enabled max length validation on text area, then after validating text area all the text areas in page are freezed and I am not able to edit or delete from any text area.

Please help me how to resolve this issue that after validating text areas no text area is freezed.

My HTML Page is as

    <table cellpadding="2" width="20%" bgcolor="99FFFF" align="center"
        cellspacing="2">

        <tr>
            <td colspan=2>
                <center>
                    <font size=4><b>Student Registration Form</b></font>
                </center>
            </td>
        </tr>

        <tr>
            <td>Name</td>
            <td><input type=text name=textnames id="textname" size="30"></td>
        </tr>

        <tr>
            <td>Father Name</td>
            <td><input type="text" name="fathername" id="fathername"
                size="30"></td>
        </tr>
        <tr>
            <td>Postal Address</td>
            <td><input type="text" name="paddress" id="paddress" size="30"></td>
        </tr>

        <tr>
            <td>Personal Address</td>
            <td><input type="text" name="personaladdress"
                id="personaladdress" size="30"></td>
        </tr>

        <tr>
            <td>Sex</td>
            <td><input type="radio" name="sex" value="male" size="10">Male
                <input type="radio" name="sex" value="Female" size="10">Female</td>
        </tr>

        <tr>
            <td>City</td>
            <td><select name="City">
                    <option value="-1" selected>select..</option>
                    <option value="New Delhi">NEW DELHI</option>
                    <option value="Mumbai">MUMBAI</option>
                    <option value="Goa">GOA</option>
                    <option value="Patna">PATNA</option>
            </select></td>
        </tr>

        <tr>
            <td>Course</td>
            <td><select name="Course">
                    <option value="-1" selected>select..</option>
                    <option value="B.Tech">B.TECH</option>
                    <option value="MCA">MCA</option>
                    <option value="MBA">MBA</option>
                    <option value="BCA">BCA</option>
            </select></td>
        </tr>

        <tr>
            <td>District</td>
            <td><select name="District">
                    <option value="-1" selected>select..</option>
                    <option value="Nalanda">NALANDA</option>
                    <option value="UP">UP</option>
                    <option value="Goa">GOA</option>
                    <option value="Patna">PATNA</option>
            </select></td>

        </tr>

        <tr>
            <td>State</td>
            <td><select Name="State">
                    <option value="-1" selected>select..</option>
                    <option value="New Delhi">NEW DELHI</option>
                    <option value="Mumbai">MUMBAI</option>
                    <option value="Goa">GOA</option>
                    <option value="Bihar">BIHAR</option>
            </select></td>
        </tr>
        <tr>
            <td>PinCode</td>
            <td><input type="number" maxlength='6' name="pincode"
                id="pincode" size="30"></td>

        </tr>
        <tr>
            <td>EmailId</td>
            <td><input type="text" name="emailid" id="emailid" size="30"></td>
        </tr>

        <tr>
            <td>DOB</td>
            <td><input type="text" name="dob" id="dob" size="30"></td>
        </tr>

        <tr>
            <td>MobileNo</td>
            <td><input type="text" name="mobileno" id="mobileno" size="30"></td>
        </tr>
        <tr>
            <td><input type="reset"></td>
            <td colspan="2"><input type="submit" value="Submit Form" /></td>
        </tr>
    </table>
</form>

I added max length and only number in Pincode textarea. when I entered pin code after that each text area is freezed.

If I did not put these validation in pincode text area then it never freezes.

I have a Html page which uses Java Script and I am opening that page in WebView

My problem is when I enabled max length validation on text area, then after validating text area all the text areas in page are freezed and I am not able to edit or delete from any text area.

Please help me how to resolve this issue that after validating text areas no text area is freezed.

My HTML Page is as

    <table cellpadding="2" width="20%" bgcolor="99FFFF" align="center"
        cellspacing="2">

        <tr>
            <td colspan=2>
                <center>
                    <font size=4><b>Student Registration Form</b></font>
                </center>
            </td>
        </tr>

        <tr>
            <td>Name</td>
            <td><input type=text name=textnames id="textname" size="30"></td>
        </tr>

        <tr>
            <td>Father Name</td>
            <td><input type="text" name="fathername" id="fathername"
                size="30"></td>
        </tr>
        <tr>
            <td>Postal Address</td>
            <td><input type="text" name="paddress" id="paddress" size="30"></td>
        </tr>

        <tr>
            <td>Personal Address</td>
            <td><input type="text" name="personaladdress"
                id="personaladdress" size="30"></td>
        </tr>

        <tr>
            <td>Sex</td>
            <td><input type="radio" name="sex" value="male" size="10">Male
                <input type="radio" name="sex" value="Female" size="10">Female</td>
        </tr>

        <tr>
            <td>City</td>
            <td><select name="City">
                    <option value="-1" selected>select..</option>
                    <option value="New Delhi">NEW DELHI</option>
                    <option value="Mumbai">MUMBAI</option>
                    <option value="Goa">GOA</option>
                    <option value="Patna">PATNA</option>
            </select></td>
        </tr>

        <tr>
            <td>Course</td>
            <td><select name="Course">
                    <option value="-1" selected>select..</option>
                    <option value="B.Tech">B.TECH</option>
                    <option value="MCA">MCA</option>
                    <option value="MBA">MBA</option>
                    <option value="BCA">BCA</option>
            </select></td>
        </tr>

        <tr>
            <td>District</td>
            <td><select name="District">
                    <option value="-1" selected>select..</option>
                    <option value="Nalanda">NALANDA</option>
                    <option value="UP">UP</option>
                    <option value="Goa">GOA</option>
                    <option value="Patna">PATNA</option>
            </select></td>

        </tr>

        <tr>
            <td>State</td>
            <td><select Name="State">
                    <option value="-1" selected>select..</option>
                    <option value="New Delhi">NEW DELHI</option>
                    <option value="Mumbai">MUMBAI</option>
                    <option value="Goa">GOA</option>
                    <option value="Bihar">BIHAR</option>
            </select></td>
        </tr>
        <tr>
            <td>PinCode</td>
            <td><input type="number" maxlength='6' name="pincode"
                id="pincode" size="30"></td>

        </tr>
        <tr>
            <td>EmailId</td>
            <td><input type="text" name="emailid" id="emailid" size="30"></td>
        </tr>

        <tr>
            <td>DOB</td>
            <td><input type="text" name="dob" id="dob" size="30"></td>
        </tr>

        <tr>
            <td>MobileNo</td>
            <td><input type="text" name="mobileno" id="mobileno" size="30"></td>
        </tr>
        <tr>
            <td><input type="reset"></td>
            <td colspan="2"><input type="submit" value="Submit Form" /></td>
        </tr>
    </table>
</form>

I added max length and only number in Pincode textarea. when I entered pin code after that each text area is freezed.

If I did not put these validation in pincode text area then it never freezes.

• javascript
• android
• webview

• plz show ur code so that others can help you. – Jenz Commented Apr 9, 2014 at 5:32
• Can you share a working fiddle? – Nick Commented Apr 9, 2014 at 7:02
• awaiting for right answers.. – Neha Shukla Commented Apr 16, 2014 at 12:31
• after you enter some value in pincode and press submit the code freeze ?? – Dileep Commented Apr 17, 2014 at 4:36
• @Dileep No as soon as 6 digits are entered in text area, immediately pincode text area and all other text areas are freezed , I am not able to delete or modify any text area.. – Neha Shukla Commented Apr 17, 2014 at 4:39

5 Answers 5

The issue that you are facing is a bug and has already been reported as issue #35264.

I have created a workaround for it at jsfiddle. For convenience pasted code below.

HTML:

<input type="number" maxlength='6' name="pincode" id="pincode" size="30" max="999999" >

Javascript:

var pincode = document.getElementById('pincode');
var maxLength = pincode.maxLength;
pincode.onkeypress = function(e){
    if( pincode.value.length >= maxLength ){
        return false;
    }
};

The solution is, just ensure the content of input element does not cross the max limit.

• On each keypress event, pare the input value length against max length. If it is more return false so that the input will be discarded.
• Set max attribute on input element, to prevent user providing input more than max value using up arrow key.

First of all what you said is not text area. It's just a text filed. Text area should be defied as <textarea rows="10" cols="15"></textarea>.

Actually maxlength attribute is used to limit number of characters that user can enter. you gave maxlength='6' here which means maximum values user here can enter is just 6 digits or character.

I hope you were trying to adjust the width of the input filed. For that, give the following attribute and value : style="width:100px;max-width:60%;". ie., <input type="number" maxlength='6' name="pincode" id="pincode" size="30" style="width:100px;max-width:60%;">

In HTML you can use max attribute to set a maximum length to an input type number.

<input type="number" min="1" max="999999" name="pincode" id="pincode" size="30">

Documentation about maxLength attribute in HTML

maxlength

If the value of the type attribute is text, email, search, password, tel, or url, this >attribute specifies the maximum number of characters (in Unicode code points) that the user can enter; for other control types, it is ignored. It can exceed the value of the size attribute. If it is not specified, the user can enter an unlimited number of characters. Specifying a negative number results in the default behavior; that is, the user can enter an unlimited number of characters. The constraint is evaluated only when the value of the attribute has been changed.

Thus its designed to be ignored for input type="number"

Look here for plete set of attributes description for < input >

It will only set the maximum allowed number as the max value specified, it won't be blocking any value grater than max Value. Max attribute shows an error popup showing that the limit is exceeded.

If you want to block the text value from not getting any bigger than 6, you can uses JavaScript

SCRIPT

  <script>  function validateLength(obj)
    {
        if(obj.value.length > 6)
            obj.value = obj.value.substr(0, 6);
    }
  </script>

HTML

 <input type="number" min="1" max="999999" name="pincode" id="pincode" onkeyup="validateLength(this)"> 

I think that the only way to acplish what you want is with JavaScript. I would use a method similar to Dileep's with a few differences:

• Instead of just splicing the first six characters from the current value, I would save the last entered valid value and revert to that. A similar functionality, but more stable as far as I can tell.
• Instead of using an inline HTML event callback, I would remend assigning it directly via the DOM in the JavaScript. For a discussion of the differences between these methods, see this SO.
• I also think that having the input box briefly flash a different color, at least for debugging purposes, would help to see when and how the code was executing if anything doesn't work.
• Finally, I would use an <input type="tel"/> rather than an <input type="number"/>. The tel will still bring up a number-pad on mobile devices, but, unlike number, won't have an empty value when non-numeric data is entered. (See this SO.)

I've put all of this into a brief JSFiddle for you to see. Feel free to reuse it if it helps: http://jsfiddle/VPL5e/1/

Does this solve your problem? If you need anything else, please ask!

There is nothing wrong in your html code may be the issue is in "form validation". anyway i am providing you that full html and form validation code.

HTML

    <html>
<head>
<script type="text/javascript" src="validate.js"></script>
</head>
<body>
<form action="#" name="StudentRegistration" onsubmit="return(validate());">

<table cellpadding="2" width="20%" bgcolor="99FFFF" align="center"
cellspacing="2">

<tr>
<td colspan=2>
<center><font size=4><b>Student Registration Form</b></font></center>
</td>
</tr>

<tr>
<td>Name</td>
<td><input type=text name=textnames id="textname" size="30"></td>
</tr>

<tr>
<td>Father Name</td>
<td><input type="text" name="fathername" id="fathername"
size="30"></td>
</tr>
<tr>
<td>Postal Address</td>
<td><input type="text" name="paddress" id="paddress" size="30"></td>
</tr>

<tr>
<td>Personal Address</td>
<td><input type="text" name="personaladdress"
id="personaladdress" size="30"></td>
</tr>

<tr>
<td>Sex</td>
<td><input type="radio" name="sex" value="male" size="10">Male
<input type="radio" name="sex" value="Female" size="10">Female</td>
</tr>

<tr>
<td>City</td>
<td><select name="City">
<option value="-1" selected>select..</option>
<option value="New Delhi">NEW DELHI</option>
<option value="Mumbai">MUMBAI</option>
<option value="Goa">GOA</option>
<option value="Patna">PATNA</option>
</select></td>
</tr>

<tr>
<td>Course</td>
<td><select name="Course">
<option value="-1" selected>select..</option>
<option value="B.Tech">B.TECH</option>
<option value="MCA">MCA</option>
<option value="MBA">MBA</option>
<option value="BCA">BCA</option>
</select></td>
</tr>

<tr>
<td>District</td>
<td><select name="District">
<option value="-1" selected>select..</option>
<option value="Nalanda">NALANDA</option>
<option value="UP">UP</option>
<option value="Goa">GOA</option>
<option value="Patna">PATNA</option>
</select></td>

</tr>

<tr>
<td>State</td>
<td><select Name="State">
<option value="-1" selected>select..</option>
<option value="New Delhi">NEW DELHI</option>
<option value="Mumbai">MUMBAI</option>
<option value="Goa">GOA</option>
<option value="Bihar">BIHAR</option>
</select></td>
</tr>
<tr>
<td>PinCode</td>
<td><input type="text" name="pincode" id="pincode" size="30"></td>

</tr>
<tr>
<td>EmailId</td>
<td><input type="text" name="emailid" id="emailid" size="30"></td>
</tr>

<tr>
<td>DOB</td>
<td><input type="text" name="dob" id="dob" size="30"></td>
</tr>

<tr>
<td>MobileNo</td>
<td><input type="text" name="mobileno" id="mobileno" size="30"></td>
</tr>
<tr>
<td><input type="reset"></td>
<td colspan="2"><input type="submit" value="Submit Form" /></td>
</tr>
</table>
</form>
</body>
</html>

Form Validation

function validate()
{ 
   if( document.StudentRegistration.textnames.value == "" )
   {
     alert( "Please provide your Name!" );
     document.StudentRegistration.textnames.focus() ;
     return false;
   }
   if( document.StudentRegistration.fathername.value == "" )
   {
     alert( "Please provide your Father Name!" );
     document.StudentRegistration.fathername.focus() ;
     return false;
   }

   if( document.StudentRegistration.paddress.value == "" )
   {
     alert( "Please provide your Postal Address!" );
     document.StudentRegistration.paddress.focus() ;
     return false;
   }
   if( document.StudentRegistration.personaladdress.value == "" )
   {
     alert( "Please provide your Personal Address!" );
     document.StudentRegistration.personaladdress.focus() ;
     return false;
   }
   if ( ( StudentRegistration.sex[0].checked == false ) && ( StudentRegistration.sex[1].checked == false ) )
   {
   alert ( "Please choose your Gender: Male or Female" );
   return false;
   }   
   if( document.StudentRegistration.City.value == "-1" )
   {
     alert( "Please provide your City!" );
     document.StudentRegistration.City.focus() ;
     return false;
   }   
   if( document.StudentRegistration.Course.value == "-1" )
   {
     alert( "Please provide your Course!" );

     return false;
   }   
   if( document.StudentRegistration.District.value == "-1" )
   {
     alert( "Please provide your Select District!" );

     return false;
   }   
   if( document.StudentRegistration.State.value == "-1" )
   {
     alert( "Please provide your Select State!" );

     return false;
   }
   if( document.StudentRegistration.pincode.value == "" ||
           isNaN( document.StudentRegistration.pincode.value) ||
           document.StudentRegistration.pincode.value.length != 6 )
   {
     alert( "Please provide a pincode in the format ######." );
     document.StudentRegistration.pincode.focus() ;
     return false;
   }
 var email = document.StudentRegistration.emailid.value;
  atpos = email.indexOf("@");
  dotpos = email.lastIndexOf(".");
 if (email == "" || atpos < 1 || ( dotpos - atpos < 2 )) 
 {
     alert("Please enter correct email ID")
     document.StudentRegistration.emailid.focus() ;
     return false;
 }
  if( document.StudentRegistration.dob.value == "" )
   {
     alert( "Please provide your DOB!" );
     document.StudentRegistration.dob.focus() ;
     return false;
   }
  if( document.StudentRegistration.mobileno.value == "" ||
           isNaN( document.StudentRegistration.mobileno.value) ||
           document.StudentRegistration.mobileno.value.length != 10 )
   {
     alert( "Please provide a Mobile No in the format 123." );
     document.StudentRegistration.mobileno.focus() ;
     return false;
   }
   return( true );
}

let me know if it worked or any other issue you faced in this.