Java Script validation for not allowing Spaces.

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Hi huys i need to validate the textbox without allowing space starting position and allowing only one space between two words..

1234567
Ex:Vino Pr--->correct: 5th position is space i.e only one position is allowed.

123456789
Ex: Vino Pr--->This Example is incorrect 1st Position allowed Space and in between
allowed 2 spaces.. i need to textbox to get input not allowing the space in the 1st position and not allow the more than one space between the words.

i used the the Text.StartTrim().EndTrim()

it coming correctly while adding in the gridview from textbox.
But from Gridview to database it allowing the spaces.

Posted 2-Jul-12 7:34am

Salt Pepper

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Comments

Rahul Rajat Singh 2-Jul-12 22:58pm

You need javascript to filter the keystroke based on these requirements or the validations.

2 solutions

Solution 1

i think this code is helpfull to you
--------------------------------------------------------------

XML

<div>
   <script type=""text/javascript">

language="javascript">
       function isNumberKey(evt) {
           //    if (!(((event.keyCode >= 48 && event.keyCode <= 57) || (event.keyCode >= 96 && event.keyCode <= 105)) || (event.keyCode == 8) || (event.keyCode == 9) || (event.keyCode == 37) || (event.keyCode == 39) || (event.keyCode == 46) || (event.keyCode == 190) || (event.keyCode == 35) || (event.keyCode == 36)))
           //event.returnValue=false;
           var charCode = (evt.which) ? evt.which : event.keyCode
           if (charCode > 31 && charCode < 48 || charCode > 57)
               if (event.keyCode != 46)
                   if (event.keyCode != 110)

                       return false;

           return true;



       }


</script>
close the script tag
 
<asp:textbox id="txtAdm" runat="server" onkeypress="return isNumberKey(event)" xmlns:asp="#unknown">
                      Width="150px" MaxLength="8"></asp:textbox>

       </div>

Posted 2-Jul-12 16:11pm

Hem Raj Thakur

Comments

Shemeer NS 3-Jul-12 7:53am

he was asking for space validation, not number validation!!!

Member 10380324 5-Nov-13 2:01am

How to do the same under button click using onclientclick of above javascript

Member 11933957 12-Sep-15 7:36am

if i m entering space in textbox it accept value if i am using regular expression it not allow space between two words .i want to remove only leading space not. plzz help

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Shemeer NS · Accepted Answer · 2012-07-03T01:59:00

Here I have created a JavaScript Method for validating the SPACE

no space allowed in first position and last position, there can be only one space in between any word

This function will Trim() the content and will check the space occurences if more than one space found then it will propmt "NOT VALID" else "VALID"

JavaScript

<script type="text/javascript">

    function AllowSingleSpaceNotInFirstAndLast() {
        var obj = document.getElementById('TextBox1');
        obj.value = obj.value.replace(/^\s+|\s+$/g, "");
        var CharArray = obj.value.split(" ");
        if (CharArray.length > 2) {
            alert("User name NOT VALID");
            return false;
        }
        else {
            alert("User name VALID");
        }
        return true;
    }
</script></script>

HTML

Username: <input type="text" id="TextBox1" name="user" />
<input type="button" value="Submit" onclick="return AllowSingleSpaceNotInFirstAndLast();" />

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