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Re: Javascript Form Validation

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Abdullah hasan <abdullahh546@gmail.com> wrote on 29 Sep 2015 in
comp.lang.javascript: 

> On Tuesday, September 29, 2015 at 4:19:41 PM UTC+8, Abdullah hasan
> wrote: 
>> On Tuesday, September 29, 2015 at 5:44:14 AM UTC+8, Evertjan. wrote:
>> > abdullahh546@gmail.com wrote on 28 Sep 2015 in comp.lang.javascript:
>> > 
>> > > I am creating a Registration/login page . When user enter a field ,
>> > > and goes no to next field , i want the browser to show the error
>> > > just below the incorrect data field . In this way only valid
>> > > entries is submitted . I dont want to show error when user click
>> > > submit button . Just after every wrong field when going to next
>> > > field . 
>> > 
>> > Have you got a question?
>> > 
>> > Is this a school assignment?

[please do not quote signatures on usenet]

>> No assignment . Just experimenting . I can easily show the error(if
>> any) below the field when user hit submit button . But what i want is
>> to show error immediately after going to next field . 
> 
> function myfunction() {
>   var v = document.getElementById('email').value;
>   if(v=="") {
>     document.getElementById('colour1').className+=' has-error';
>     document.getElementById('fill').innerHTML =
>       'Please enter a valid username'; 
>     return false;

Not needed for below.

>   };
> };

[Still my first Q is not anwered, I'll have to guess]

use:

<input onBlur = 'myfunction(this)' ...>

For multiple fields getElementById() will not be ideal,
try DOM-transversing with: 
'this', 'parentNode', etc.
and display:none or visibility:hidden.



-- 
Evertjan.
The Netherlands.
(Please change the x'es to dots in my emailaddress)

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Javascript Form Validation abdullahh546@gmail.com - 2015-09-28 13:07 -0700
  Re: Javascript Form Validation "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2015-09-28 23:44 +0200
    Re: Javascript Form Validation Abdullah hasan <abdullahh546@gmail.com> - 2015-09-29 01:19 -0700
      Re: Javascript Form Validation Abdullah hasan <abdullahh546@gmail.com> - 2015-09-29 01:20 -0700
        Re: Javascript Form Validation "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2015-09-29 12:10 +0200

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