Javascript validation for spaces in text box

[kiran83]

My Text box can accept all types of data like alphabets,numer ic,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.(jav ascript validation after clicking a button).

[kenobewan]

My Text box can accept all types of data like alphabets,numer ic,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.(jav ascript 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.getEl ementById("<%=T extBox1.ClientI D%>").value=="" )
{
alert("No Feild can not be blank");
document.getEle mentById("<%=Te xtBox1.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:

[CODE=javascript]function validate() {
var field = document.getEle mentById("<%=Te xtBox1.ClientID %>");
var val = field.value.rep lace(/^\s+|\s+$/, '');

if (val.length == 0) {
alert('wrong value');
}
}
[/CODE]
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.substr ing(0,1) == ' ')
{
sString = sString.substri ng(1, sString.length) ;
}
while (sString.substr ing(sString.len gth-1, sString.length) == ' ')
{
sString = sString.substri ng(0,sString.le ngth-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:

[CODE=javascript]var val = field.value.rep lace(/^\s+|\s+$/, '');
[/CODE]
it could be just one line ;)

kind regards