We Keep Coding

Jquery issue with val not working as expected

I have a couple of forms on a site. On the first form I used the code below to add a border color if the input field is not blank and remove it if it is blank. This works just fine no issues. But I've found that when I try to use the same method on other forms, to do something else using the same logic, it does not work.
I have read through many forums and what I'm seeing is that the code is only read on page load. But I have forms that run the function after the page is far past loading. Can someone give some light to this? I'm really trying to understand the way this works fully.
Code that works on form:
var checkErrorIn;
jQuery(document).ready(function ($) {
checkErrorIn = setInterval(CheckErrorInput, 0);
});
function CheckErrorInput() {
if (jQuery('body').is('.page-id-6334')) {
// First Name, Last Name validation colors
var pasdFName = jQuery('#first_name').val();
var pasdLName = jQuery('#last_name').val();
if (pasdFName != '') {
jQuery('#first_name').addClass('formConfirm_cc');
} else {
jQuery('#first_name').removeClass('formConfirm_cc');
}
if (pasdLName != '') {
jQuery('#last_name').addClass('formConfirm_cc');
} else {
jQuery('#last_name').removeClass('formConfirm_cc');
}
if (pasdFName != '' & pasdLName == '') {
jQuery('#last_name').addClass('formError_cc');
} else {
jQuery('#last_name').removeClass('formError_cc');
}
if (pasdFName == '' & pasdLName != '') {
jQuery('#first_name').addClass('formError_cc');
} else {
jQuery('#first_name').removeClass('formError_cc');
}
}
}
Code that is not working:
if (jQuery('body').is('.woocommerce-page')) {
var checkActiveName = jQuery('.woo_login_form > form > #username').val();
jQuery('.woo_login_form').on('input', function(){
jQuery('.woo_login_form').addClass('cdc_keep_active');
});
if (checkActiveName =='') {
jQuery('.woo_login_form').removeClass('cdc_keep_active');
}
}
What I am trying to do is fix an issue with a form becoming hidden if not hovered over even when the input has characters. Based on my research I figured I'd do the .on to get the class added when the input got characters. That works but the removal of the characters isn't removing the class. The logic looks right to me. What am I missing?
Thank you in advance for your help and insight.
Update:
Ok so I ended up doing this:
jQuery('.woo_login_form').on('click', function () {
jQuery('.woo_login_form').addClass('cdc_keep_active');
});
jQuery('.custom-login-box > a').on('click', function () {
jQuery('.woo_login_form').toggle();
});
For some reason my class would not add with any of the methods suggested individually so I combined the logic. The first part adds the class that makes the form visible but then the form won't close if clicked out of regardless of the 'removeClass'. So I added a toggle (thank you commenters) method to the "hovered link" to allow users to close the box if not needed.
Would still like to understand why the first method worked in one instance but not the other. Any and all insight appreciated. Thank you.

In your current code example you immediately check for the value of the username field.
var checkActiveName = jQuery('.woo_login_form > form > #username').val();
The thing with this is that checkActiveName will never change, unless it is reassigned elsewhere in the code.
What you need to do is to check the current value after every input of the user. That means moving that line of reading the value of the input inside the input event listener.
if (jQuery('body').is('.woocommerce-page')) {
var $wooLoginForm = jQuery('.woo_login_form');
var $userName = jQuery('#username'); // This ID should only exist once, so no need for complex selectors.
$wooLoginForm.on('input', function() {
var checkActiveName = $userName.val();
if (checkActiveName =='') {
$wooLoginForm.removeClass('cdc_keep_active');
} else {
$wooLoginForm.addClass('cdc_keep_active');
}
});
}
On a sidenote: using setInterval to validate your form is a bad practice. This would basically run infinitely. It doesn't have to. You only have to check if a form is valid after the user enters a value.
Apply the same technique with the event listener like in your second code snippet.
var $document = jQuery(document);
$document.ready(function ($) {
/**
* It might even be better to listen for the input event on the form
* that has to be validated, but I didn't see it in your code.
* Right now it listens for input on the entire page.
*/
$document.on('input', CheckErrorInput);
});

How to synchronise ExtJS "checkboxes" (buttons) with Javascript/JQuery?

I am currently trying to synchronize two checkboxes on a page.
I need the checkboxes to be synchronized - to this end, I'm using a Tampermonkey userscript to pick up when one of them is clicked. However, I'm at a loss as to how to do it.
I believe they are not actually checkboxes, but ExtJS buttons that resemble checkboxes. I can't check whether they're checked with JQuery because of this: the checked value is appended to a class once the JS behind the button has run.
I have tried preventDefault and stopPropagation, but either I'm using it wrong or not understanding its' usage.
I'm not quite clever enough to just call the JS behind the box instead of an onclick event. Otherwise, that would solve my issue.
This is my code:
//Variables - "inputEl" is the actual button.
var srcFFR = "checkbox-1097";
var destFFR = "checkbox-1134";
var srcFFRb = "checkbox-1097-inputEl";
var destFFRb = "checkbox-1134-inputEl";
//This checks if they're synchronised on page load and syncs them with no user intervention.
var srcChk = document.getElementById(srcFFR).classList.contains('x-form-cb-checked');
var destChk = document.getElementById(destFFR).classList.contains('x-form-cb-checked');
if (srcChk == true || destChk == false) {
document.getElementById(destFFRb).click();
} else if (destChk == true || srcChk == false) {
document.getElementById(srcFFRb).click();
}
//This is where it listens for the click and attempts to synchronize the buttons.
$(document.getElementById(srcFFRb)).on('click', function(e) {
e.preventDefault();
if (document.getElementById(srcFFR).classList == document.getElementById(destFFR).classList) {
return false;
} else {
document.getElementById(destFFRb).click();
}
});
$(document.getElementById(destFFRb)).on('click', function(e) {
e.preventDefault();
if (document.getElementById(srcFFR).classList == document.getElementById(destFFR).classList) {
return false;
} else {
document.getElementById(srcFFRb).click();
}
});
I'm at a bit of a loss...any help would be greatly appreciated.

Figured it out - I was comparing class lists without singling out what I wanted to actually match.
My solution:
$(document.getElementById(srcFFRb)).on('click', function(){
if (document.getElementById(srcFFR).classList.contains('x-form-cb-checked')
== document.getElementById(destFFR).classList.contains('x-form-cb-checked')) {
return false;}
else {
document.getElementById(destFFRb).click();;
}});
$(document.getElementById(destFFRb)).on('click', function(){
if (document.getElementById(srcFFR).classList.contains('x-form-cb-checked')
== document.getElementById(destFFR).classList.contains('x-form-cb-checked')) {
return false;}
else {
document.getElementById(srcFFRb).click();;
}});

Disable a table cell after the first click in javascript

I have a table cell as the following :
<td id=report onMouseUp='clickReport()' onKeyPress='clickReport()' >Click</td>";
The event function is as below :
function clickReport() {
document.form.submit();
}
On form submission, there is a back-end process going on. Until the 1st process completes(i.e., until the page reloads), I do not want the user to press the press the "Click" again, else it may affect the previous running process.
So, I thought of disabling the "Click" after the first press.
I tried using preventDefault() but it is not working.
function clickReport() {
document.form.submit();
document.getElementById("report").onMouseUp = function(e)
{
e.preventDefault();
return false;
}
document.getElementById("report").onKeyPress = function(e)
{
e.preventDefault();
return false;
}
}
Can someone please help!

1) You might pass the element parameter to your event functions, so you can acces the DOM element easily. See below.
<td id=report onMouseUp='clickReport(this)' onKeyPress='clickReport(this)' >Click</td>";
2) On the first function run you might null the events, so they will not fire anymore. See below.
// the *element* parameter is yor <td> element here
function clickReport(element) {
document.form.submit();
element.onMouseUp = null;
element.onKeyPress= null;
}
3) You might use onclick event instead of onmouseup and get rid of onkeypress, if you only want to make it work on click.
<td id=report onclick='clickReport(this)'>Click</td>";
function clickReport(element) {
document.form.submit();
element.onclick= null;
}
Working codepen: https://codepen.io/anon/pen/MmVNMe

this should work.
since at first the disableClick is undefined the click will fire, as soon as it fires the flag will be set to true and the click will no longer be possible.
<td id=report onMouseUp='!disableClick && clickReport()'
onKeyPress='!disableClick && clickReport()' >Click</td>"
function clickReport() {
document.form.submit();
window.disableClick = true;
}

iPhone Javascript Confirm Dialog Bug

I have a javascript confirm dialog popping up, but when I tap 'Cancel', then after the dialog closes, tap anywhere on the screen, the dialog pops up again. It only happens the one extra time, then you can tap on the page again without the dialog popping up.
I'm only seeing this on iPhone/iPad running iOS 5.0.1. I don't have an iOS 6 device, so I'm not sure it's happening there.
Here's the code I'm using:
$(bpm.remoteAppDivName).on('tap', 'a.delete-pending-payment', function(event) {
if (isJQMGhostClick(event)) { return false; }
var deleteGlobalPaymentURL = $(this).attr('href');
var confirmMsg = confirm ("Are you sure you want to do that?");
if (confirmMsg === true){
window.location = '/index.htm';
}
event.preventDefault();
return false;
});
var lastclickpoint, curclickpoint;
var isJQMGhostClick = function(event){
curclickpoint = event.clientX+'x'+event.clientY;
var ret=false;
if (lastclickpoint === curclickpoint) {
ret=true;
} else {
ret=false;
}
lastclickpoint = curclickpoint;
return ret;
}
Here's a link to the problem page: http://www.5280skateparks.com/dev/confirmBug.htm
Any help would be extremely appreciated.
UPDATE: I just confirmed that it's happening on iOS 6.0.1 as well.

This is the jQuery Mobile "Ghost Click" discussed in some detail here and here. On the forum page, a solution was proposed, which I have reproduced below with a small bug fix:
var lastclickpoint, curclickpoint;
var isJQMGhostClick = function(event){
curclickpoint = event.clientX+'x'+event.clientY;
var ret=false;
if (lastclickpoint === curclickpoint) {
ret=true;
} else {
ret=false;
}
lastclickpoint = curclickpoint;
return ret;
}
I have modified this code slightly to not always expect a pair of clicks. This function now works correctly in the case of 0 ghost clicks and more than 2 ghost clicks. You can use it by checking isJQMGhostClick(event) at the beginning of your tap handler and ignoring the event if the isJQMGhostClick function returns true.

Understanding event bubbling in Javascript

I've been trying to understand even bubbling, and not quite sure I completely follow it. I started reading about it so that I could warn users when they were leaving a page on my website if they had started to enter data into a form (in a similar way to Stack Overflow does!).
The following code seems to work cross-browser:
var entereddata = false;
$(document).ready(function()
{
$('#contactform').bind('keypress',function(e) {
if((e.which > 96 && e.which < 123) || (e.which > 47 && e.which < 58)) {
entereddata = true;
//alert(e.which);
}
});
});
function confirmLeave(e, d)
{
if(!e) e = window.event;//window.event;
if(!d) d = entereddata;
var confirmationMessage = 'It appears you have started to enter information into the contact form, but have not yet submitted it';
if(!d)
{
e.cancelBubble = true;
} else
{
return confirmationMessage;
}
}
window.onbeforeunload=confirmLeave;
However, this also gets called when I click the submit button for the form, which I don't want. I've tried various additions to the code, such as adding:
if($('#submit').click()){
submitted=true;
} else {
submitted=false;
}
and then changing if(!d) to if(!d && submitted==false) to the main code; however, this (and every other combination of trying to get the page to fire only if the submit button isn't clicked) doesn't work, with the warning either still showing when I click the submit button, or no warning being shown when anything is clicked!
This might boil down to the fact I don't understand the event bubbling process - I don't know why I need the e.cancelBubble = true; in the place I have it.
So, my two main problems are:
how do I check if the submit button is clicked, and only show the warning if it isn't clicked
and to understand eventBubbling; for example: if enteredData is true, then I'm not affecting the bubbling process. Should I be? Should I have e.cancelBubble=false if enteredData is false and e.cancelBubble=true if enteredData is true? What effect does setting the value of e.cancelBubble actually have when closing a page?
Am I also correct in thinking I don't need the event e.stopPropagation
at all, because Firefox supports event bubbling?

What about having such code?
$('#submit').click(function() {
entereddata = false;
});
This should be called before the actual form submission i.e. before confirmLeave is running, so lowering the flag should do the trick.

Try removing the onbeforeunload "listener":
$('#submit').click(function() {
window.onbeforeunload=null;
});
I don't think you need to worry about bubbling in this example...
return null if you want the browser to move on without asking the user, or return a string if you want the browser to show an alert asking the user if he wants to move on or not...
function confirmLeave(e) {
e = e || window.event;//window.event;
var confirmationMessage = 'It appears you have started to enter information into the contact form, but have not yet submitted it';
if(entereddata) {
return confirmationMessage;
} else {
return null;
}
}
Bubbling and propagation only applies to event's that should notify it's children or it's parents, and as far as i know window.onbeforeunload is a global event that will not be propagated.

Unrelated to bubbling, but you could bypass detecting whether keys were pressed and check the form data instead:
function hasNonemptyTextInputs() {
var textInputs = $('#contactform :input').filter(':text, textarea');
// Check for any field with a nonempty value
// .is() returns true iff the function returns true on any element
return textInputs.is(function() {
return $(this).val().length > 0;
});
}