validation for textbox

[deepikashalini]

Hi,

how to validate the textbox accepts 10 Numbers only.
give sample code....

[mrhoo]

Which ten numbers do you allow?

10 digits?

inputelement.onchange=function(e){
    e= window.event || e;
    e= e.target || e.src;
    var M= /^(\d{10})$/.exec(e.value);
    return e.value= M? M[1]: '';
}

[malav123]

Hi,
just set the maxlength of textbox = 10 and to check that user has entered the 10 digits write following code in javascript...

function check()
{
         if(textbox1.value.length!=10)
        {
            alert("Please Enter 10 digits for textbox1");
            textbox1.focus();
            return false;
        }
}
 

[gits]

Hi,
just set the maxlength of textbox = 10 and to check that user has entered the 10 digits write following code in javascript...

function check()
{
         if(textbox1.value.length!=10)
        {
            alert("Please Enter 10 digits for textbox1");
            textbox1.focus();
            return false;
        }
}
 

that code just checks for 10 characters without checking the type of it ... so it would be possible to enter 10 alpha-chars or numbers or a mixture ... so mrhoo's (see post #2) solution is to prefer for the original requirement ...

kind regards

[malav123]

that code just checks for 10 characters without checking the type of it ... so it would be possible to enter 10 alpha-chars or numbers or a mixture ... so mrhoo's (see post #2) solution is to prefer for the original requirement ...

kind regards

Yes you are right i have only specified for length 10, for numeric value checking "isNaN" is very useful function of javascript... right ?

[gits]

yup ... you are right ... using isNaN() or a regExp like mrhoo did are the common ways to check such things ...

kind regards