Javascript validation for spaces in text box

[kiran83]

My Text box can accept all types of data like alphabets,numeric,special characters ... Should give an error message 'if space is not a valid value '
when i am clicking a button... in
asp.net with c# through javascript.(javascript validation after clicking a button).

[kenobewan]

My Text box can accept all types of data like alphabets,numeric,special characters ... Should give an error message 'if space is not a valid value '
when i am clicking a button... in
asp.net with c# through javascript.(javascript validation after clicking a button).

This is still a JS problem. Suggest using click event and regular expressions. HTH.

[kiran83]

please send me javascript code for that(Space validation) it is very importent in my project...

[kiran83]

i was tryed the below code


function validate()
{
if (document.getElementById("<%=TextBox1.ClientID%>") .value=="")
{
alert("No Feild can not be blank");
document.getElementById("<%=TextBox1.ClientID%>"). focus();
return false;
}
}

this code only validate without blank but i want to without spaces validation

please help me...

[kiran83]

please reply me for the abobe question...

[malav123]

please reply me for the abobe question...

Hi Kiran,

You can use Ascii value for validation... or you can use trim function to remove all spaces from your text boxes...

[kiran83]

how to use ascii value or trim for that text box

[malav123]

how to use ascii value or trim for that text box

HI,
Fisrt of all tell me what you needs exactly ? do you want to put validation in which spaces not allows in textbox or you want to cheks only blank textbox validation ?? I think you don't want users to put spaces in text box.. right ? tell exact requirement than i will tell you how to use it because i have already used such validation in my project....

[kiran83]

validation in which spaces not allows in textbox

[kiran83]

please reply me for the above question...

[gits]

have a look at the following example:

function validate() {
    var field = document.getElementById("<%=TextBox1.ClientID%>");
    var val   = field.value.replace(/^\s+|\s+$/, '');
 
    if (val.length == 0) {
        alert('wrong value');
    }
}
 

kind regards

[kiran83]

Thank you for sending the code.


kiran

[gits]

no problem ... does it work for you?

kind regards

[malav123]

If you want to validate the textboxes for space than you can use followin java script function,

function trimAll(sString)
{
while (sString.substring(0,1) == ' ')
{
sString = sString.substring(1, sString.length);
}
while (sString.substring(sString.length-1, sString.length) == ' ')
{
sString = sString.substring(0,sString.length-1);
}
return sString;
}

[gits]

yes ... that is another way to trim a value that is done with the replace-method and a regex in the above code:

var val = field.value.replace(/^\s+|\s+$/, '');
 

it could be just one line ;)

kind regards

[malav123]

Ya it's true....
this will benificial for me also..
thanks....

[gits]

Ya it's true....
this will benificial for me also..
thanks....

no problem :) ... glad when it helps you ... and a note: whenever string-operations have to be done in javascript we could try to use regex for that. the downside of it is just the 'readability' ... sometimes regex looks very 'cryptic' and hard to read ...

kind regards

[malav123]

no problem :) ... glad when it helps you ... and a note: whenever string-operations have to be done in javascript we could try to use regex for that. the downside of it is just the 'readability' ... sometimes regex looks very 'cryptic' and hard to read ...

kind regards

Hi,
i am using one check box in my project and when i clicks on check box one pannel opens, i have write the code for this on server side but i want to write the code of same in javascript... i mean on client side, so please give me solution for my problem....

[gits]

Hi,
i am using one check box in my project and when i clicks on check box one pannel opens, i have write the code for this on server side but i want to write the code of same in javascript... i mean on client side, so please give me solution for my problem....

since this is a very different question and doesn't belong to this thread i would recommend you to start a new thread regarding your NEW problem in the javascript forum ...

kind regards
MOD

[acoder]

This is obviously a JavaScript problem thread. Moved to the JavaScript forum. Please post in the relevant forum in future.

Moderator.

[malav123]

This is obviously a JavaScript problem thread. Moved to the JavaScript forum. Please post in the relevant forum in future.

Moderator.

Thanks for Suggestion...
I am using your site from several days but i was using only .net section of Forums today i opens this section... so i will follow as you suggested from today...

[acoder]

It was addressed to the OP (kiran83), but if you benefited, you're welcome.