Displat An Alert When Field Box Is Empty Or With Certain Value?
Sep 15, 2009
I'm trying to get this code to work correctly. What I want it to do is to place a value in the field box then when the curser clicks there the field becomes blank.Ok, that part works.But I want it to display an alert if the submit button is clicked while the value is being displayed.Also, i want it to display an alert if the field has become blank and the submit button has been clicked.
I have been working on this for a month now as an exercise (I am a beginner) and I am still having problems. Every time I get a user to fully validate all information I keep getting an empty alert box. Why is it showing up empty and not with a total amount? Im 95% sure my code is correct.
Code:
<html> <head> <script language="javascript" type="text/javascript"> //function to show province
that a javascript which is validating a phone number accepts only digits but if the text field is left empty it should accept the entry as an empty entry...
this.add = function(element, err) { if ( !('__validate' in form[element]) ) { form[element].__validate = function() { if (this.value=='') { alert(err); this.focus(); return false; } }
} fields.push(form[element]); }
this.check = function() { var len = fields.length; for (var i=0; i<len; i++) if ( !fields[i].__validate() ) return false;
return true; } }
function form_onsubmit(form) { var vform = new Validate_form(form); vform.add('domain_name', 'The domain field is empty'); return(vform.check()); } --></script> <form name="signup" method="post" action="" onsubmit="return form_onsubmit();"> <input type="text" name="domain_name" /> <input type="submit" /> </form>
This is nothing special. just a basic empty field validator. it's probably not as efficient as it could be because it assigns the function to the various elements. It also only supports text fields. I was thinking of allowing a 3rd argument on Validate_form.add to accept something like Validate_form.stock.email/number/etc (functions). ah well..
I have disabled a file input field which has a textbox above it. I am trying to make it so that when there is text in the textbox the file field is enabled and disabled when it is emtpy.
I do not want to assign id's to the file inputs so im trying to use the current[code]...
I want to test if a input field is empty or not, if it is I don't want to execute the rest of the script. After googling I thought I might of found a solution but it doesn't appear to be working :( Even if the input field is empty my script still executes.The solution I found How do I test whether an element exists?The only thing I really add was:
if ($('#phone').length) before $('#search_customer').blur(function() to test the input field add_reservation.php
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/*toggle switch*/ <p><input type="checkbox" name="in_honor" value="" id="checkmemoriam" onclick="showHide(this.name);" />Please check to make this donation in honor of someone special.</p> /*hide textbox but unhide when the switch is on or the checbox is check*/ <fieldset id="fieldset-in_honor" class="fieldgroup" style="display:none"> <legend class="hide">In Honor Of</legend> <p>To make this donation in honor of someone special, please complete the two fields below:</p> <div class="formfield" <?php echo highlight('donate_honor_name'); ?>> <label for="donate_honor_name">Name:</label> <input id="donate_honor_name" name="donate_honor_name" class="text" type="text" value="<?php safeEcho($form['donate_honor_name'])?>" /> <?php helper_error('donate_honor_name'); ?> </div> <div class="formfield" <?php echo highlight('donate_honor_acknowledgement'); ?>> <label for="donate_honor_acknowledgement">Acknowledgement should be sent to:</label> <textarea id="donate_honor_acknowledgement" name="donate_honor_acknowledgement"><?php safeEcho($form['donate_honor_acknowledgement'])?>
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I found the precursor of this script online, I modified a few small things, I ran the results through jslint, I fixed the apparent errors, and then I formatted it. This is what I came up with:
function clearText(thefield){ if (thefield.defaultValue == thefield.value){ thefield.value = ""; } } function echeck(str){ [Code]....
I want to do a form validation and it should return a message like "should not be empty" when the user leaves the field blank..
I have html code like this
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[Code].....
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