Javascript Validation

[garr1095]

Greetings,

I have a web page that has a form for input. The form also uses php to concat the string "employee_" with $i, like so:

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<input type='text' name='clockIn_<?php echo $i; ?>' size='8' />

Which works fine. I can insert the times into my MySQL tables. I want to verify that a time has been entered into the field. I am using this:

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if (dlrDate==null || dlrDate=="")
{
alert("You must enter a date.");
return false;
}

to validate that a date has been entered. When I try to do:

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for (i=1;i<11;i++)
{
if (clockIn_ + i==null || clockIn_ + i=="")
...


it doesn't work. Can anyone point me in the right direction?
As you can tell, I am a beginner.

Thanks!

[gandahar]

hi !

it's not working because the name of the variable can't be completed by other variable, if you want to do this, try jQuery, you have lots of selector option


//try to put an id it will be much easier
//(i added a class to the input field for jQuery example)

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<input type='text' id='clockIn_<?php echo $i; ?>' name='clockIn_<?php echo $i; ?>' size='8' class='ab' />

//javascript

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for (i=1;i<11;i++){
    if (document.getElementById('clockIn_'+i).value==null || document.getElementById('clockIn_'+i).value=="")

//jQuery example using class selector

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$('.ab').each(function(){
   if ($(this).val()==''){//do something }
});

[minimihi]

To begin with, are you assigning form element value to variable?

Also

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if (clockIn_ + i==null || clockIn_ + i=="")

would give an error.
Check your Console to see JavaScript errors even IE has it.

should be:

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if (('clockIn_' + i) == null || ('clockIn_' + i) == "")