Develop Reference

Triggering submit button with Enter keypress event and mouse click

I am a total beginner and am learning front-end using a "just do it" and project-focus route.
My web app will essentially work similar to that of a to-do list.
I assume it is because I have "getElementById" twice for the same element.
This works initially:
// add idea to list button
document.getElementById('btnSubmit').addEventListener("submitIdea", submitIdea);
function submitIdea() {
var ul = document.getElementsByClassName('anIdea')[0];
var enterIdea = document.getElementById('enterIdea');
var li = document.createElement('li');
li.setAttribute('class', enterIdea.value);
li.appendChild(document.createTextNode(enterIdea.value));
ul.prepend(li);
li.contentEditable = 'true';
};
But then, when I add this code, I am unable to write anything at all in my input box:
// use enter key to submit new li item
document.getElementById("enterIdea").addEventListener('keypress', function(event) {
event.preventDefault();
if (event.keyCode === 13) {
document.getElementById('btnSubmit').click();
}
});
These are the resources I used:
https://memorynotfound.com/dynamically-addremove-items-list-javascript/
Trigger a button click with JavaScript on the Enter key in a text box

your code is ok in general
document.getElementById('btnSubmit').addEventListener("click", function() {
var ul = document.getElementsByClassName("anIdea")[0];
var enterIdea = document.getElementById("enterIdea");
var li = document.createElement("li");
li.setAttribute('class', enterIdea.value);
li.contentEditable = "true";
li.appendChild(document.createTextNode(enterIdea.value));
ul.prepend(li);
});
document.getElementById("enterIdea").addEventListener("keypress", function(event) {
if (event.keyCode === 13) {
document.getElementById("btnSubmit").click();
}
});

Instead of trying to "click" the button with javascript, simply call the desired function on the enter key press.
document.addEventListener("keypress", function(event) {
event.preventDefault();
if (event.keyCode === 13) {
document.getElementById('btnSubmit').click();
}
});

OnChange - Pause function if shift or control key is down

I’m using the following function to populate some combo boxes.
<script type="text/javascript">
function getcompany() {
$.post('filters.php',
$('form[name="report1"]').serialize(),
function (output) {
var options = output.split(',');
$('#M1').html(options[0]).show();
$('#T1').html(options[1]).show();
$('#I1').html(options[2]).show();
$('#C1').html(options[3]).show();
});
}
</script>
This is trigged by an OnChange event and works fine if a user only wants to filter by one item in the combo box. But if the Control or Shift key is used with the intention of selecting multiple items, the options change before selecting the next item. So, what I need is a way to detect if either of those keys are down, pause the function, then resume it after the key is released.

After another day trying things, I came up with this. Also added the shift key.
<script type="text/javascript">
//Set default variable to no
downkey = "No";
//Set variable to yes if key(s) are down
$(document).keydown(function(down){
if(down.keyCode == 16 || down.keyCode == 17) {
downkey = "Yes";
}
});
//Return variable to no and call the function when the key(s) are released
$(document).keyup(function(up){
if(up.keyCode == 16 || up.keyCode == 17) {
downkey = "No";
getcompany();
}
});
</script>
<script type="text/javascript">
function getcompany() {
if(downkey == "No"){//Checks the downkey variable to see if it is currently set to Yes or No
$.post('filters.php',
$('form[name="report1"]').serialize(),
function (output) {
var options = output.split(',');
$('#M1').html(options[0]).show();
$('#T1').html(options[1]).show();
$('#I1').html(options[2]).show();
$('#C1').html(options[3]).show();
});
}
}
</script>

I haven't tested this yet, but you can determine if the control key is pressed using the event object. e.ctrlKey
button.onclick = function (e) {
if (e.ctrlKey) {
// do nothing
}else {
getCompany();
}
}
The same goes for the shift key e.shiftKey
button.onclick = function (e) {
if (e.ctrlKey || e.shiftKey) {
// do nothing
}else {
getCompany();
}
}

JQuery Check if input is empty not checking onload?

I am using this code to check if an inputbox is empty or not and it works fine but it only checks check a key is press not when the page loads.
It's does what it should but I also want it to check the status when the page loads.
Here is the current code:
$('#myID').on('keyup keydown keypress change paste', function() {
if ($(this).val() == '') {
$('#status').removeClass('required_ok').addClass('ok');
} else {
$('#status').addClass('required_ok').removeClass('not_ok');
}
});

Try the following:
$(function() {
var element = $('#myID');
var toggleClasses = function() {
if (element.val() == '') {
$('#status').removeClass('required_ok').addClass('ok');
} else {
$('#status').addClass('required_ok').removeClass('not_ok');
}
};
element.on('keyup keydown keypress change paste', function() {
toggleClasses(); // Still toggles the classes on any of the above events
});
toggleClasses(); // and also on document ready
});

The simplest way to do is trigger any of the keyup,keydown etc event on page load. It will then automatically call your specific handler
$(document).ready(function(){
$("#myID").trigger('keyup');
});

try checking the value on a doc ready:
$(function() {
if ($('#myID').val() == '') {
$('#status').removeClass('required_ok').addClass('ok');
} else {
$('#status').addClass('required_ok').removeClass('not_ok');
}
});
EDIT: just as an update to this answer, a nicer approach might be to use toggle class, set up in doc ready then trigger the event to run on page load.
function check() {
var $status = $('#status');
if ($(this).val()) {
$status.toggleClass('required_ok').toggleClass('ok');
} else {
$status.toggleClass('required_ok').toggleClass('not_ok');
}
}
$(function () {
$('#myID').on('keyup keydown keypress change paste', check);
$('#myID').trigger('change');
});

Well then why dont just check the field after the page is loaded?
$(document).ready(function(){
if ($('#myID').val() == '') {
$('#status').removeClass('required_ok').addClass('ok');
} else {
$('#status').addClass('required_ok').removeClass('not_ok');
}
});

$(document).ready(function(){
var checkVal = $("myID").val();
if(checkVal==''){
$('#status').removeClass('required_ok').addClass('ok');
}
else{
$('#status').addClass('required_ok').removeClass('not_ok');
}
});

jQuery trigger event when click outside the element

$(document).click(function(evt) {
var target = evt.currentTarget;
var inside = $(".menuWraper");
if (target != inside) {
alert("bleep");
}
});
I am trying to figure out how to make it so that if a user clicks outside of a certain div (menuWraper), it triggers an event.. I realized I can just make every click fire an event, then check if the clicked currentTarget is same as the object selected from $(".menuWraper"). However, this doesn't work, currentTarget is HTML object(?) and $(".menuWraper") is Object object? I am very confused.

Just have your menuWraper element call event.stopPropagation() so that its click event doesn't bubble up to the document.
Try it out: http://jsfiddle.net/Py7Mu/
$(document).click(function() {
alert('clicked outside');
});
$(".menuWraper").click(function(event) {
alert('clicked inside');
event.stopPropagation();
});
http://api.jquery.com/event.stopPropagation/
Alternatively, you could return false; instead of using event.stopPropagation();

if you have child elements like dropdown menus
$('html').click(function(e) {
//if clicked element is not your element and parents aren't your div
if (e.target.id != 'your-div-id' && $(e.target).parents('#your-div-id').length == 0) {
//do stuff
}
});

The most common application here is closing on clicking the document but not when it came from within that element, for this you want to stop the bubbling, like this:
$(".menuWrapper").click(function(e) {
e.stopPropagation(); //stops click event from reaching document
});
$(document).click(function() {
$(".menuWrapper").hide(); //click came from somewhere else
});
All were doing here is preventing the click from bubbling up (via event.stopPrpagation()) when it came from within a .menuWrapper element. If this didn't happen, the click came from somewhere else, and will by default make it's way up to document, if it gets there, we hide those .menuWrapper elements.

try these..
$(document).click(function(evt) {
var target = evt.target.className;
var inside = $(".menuWraper");
//alert($(target).html());
if ($.trim(target) != '') {
if ($("." + target) != inside) {
alert("bleep");
}
}
});

$(document).click((e) => {
if ($.contains($(".the-one-you-can-click-and-should-still-open").get(0), e.target)) {
} else {
this.onClose();
}
});

I know that the question has been answered, but I hope my solution helps other people.
stopPropagation caused problems in my case, because I needed the click event for something else. Moreover, not every element should cause the div to be closed when clicked.
My solution:
$(document).click(function(e) {
if (($(e.target).closest("#mydiv").attr("id") != "mydiv") &&
$(e.target).closest("#div-exception").attr("id") != "div-exception") {
alert("Clicked outside!");
}
});
http://jsfiddle.net/NLDu3/

I do not think document fires the click event. Try using the body element to capture the click event. Might need to check on that...

This code will open the menu in question, and will setup a click listener event. When triggered it will loop through the target id's parents until it finds the menu id. If it doesn't, it will hide the menu because the user has clicked outside the menu. I've tested it and it works.
function tog_alerts(){
if($('#Element').css('display') == 'none'){
$('#Element').show();
setTimeout(function () {
document.body.addEventListener('click', Close_Alerts, false);
}, 500);
}
}
function Close_Alerts(e){
var current = e.target;
var check = 0;
while (current.parentNode){
current = current.parentNode
if(current.id == 'Element'){
check = 1;
}
}
if(check == 0){
document.body.removeEventListener('click', Close_Alerts, false);
$('#Element').hide();
}
}

function handler(event) {
var target = $(event.target);
if (!target.is("div.menuWraper")) {
alert("outside");
}
}
$("#myPage").click(handler);

try this one
$(document).click(function(event) {
if(event.target.id === 'xxx' )
return false;
else {
// do some this here
}
});

var visibleNotification = false;
function open_notification() {
if (visibleNotification == false) {
$('.notification-panel').css('visibility', 'visible');
visibleNotification = true;
} else {
$('.notification-panel').css('visibility', 'hidden');
visibleNotification = false;
}
}
$(document).click(function (evt) {
var target = evt.target.className;
if(target!="fa fa-bell-o bell-notification")
{
var inside = $(".fa fa-bell-o bell-notification");
if ($.trim(target) != '') {
if ($("." + target) != inside) {
if (visibleNotification == true) {
$('.notification-panel').css('visibility', 'hidden');
visibleNotification = false;
}
}
}
}
});

Cycle Focus to First Form Element from Last Element & Vice Versa

I have created a form with malsup's Form Plugin wherein it submits on change of the inputs. I have set up my jQuery script to index drop down menus and visible inputs, and uses that index to determine whether keydown of tab should move focus to the next element or the first element, and likewise with shift+tab keydown. However, instead of moving focus to the first element from the last element on tab keydown like I would like it to, it moves focus to the second element. How can I change it to cycle focus to the actual first and last elements? Here is a live link to my form: http://www.presspound.org/calculator/ajax/sample.php. Thanks to anyone that tries to help. Here is my script:
$(document).ready(function() {
var options = {
target: '#c_main',
success: setFocus
};
$('#calculator').live('submit', function() {
$(this).ajaxSubmit(options);
return false;
});
$(this).focusin(function(event) {
var shiftDown = false;
$('input, select').each(function (i) {
$(this).data('initial', $(this).val());
});
$('input, select').keyup(function(event) {
if (event.keyCode==16) {
shiftDown = false;
$('#shiftCatch').val(shiftDown);
}
});
$('input, select').keydown(function(event) {
if (event.keyCode==16) {
shiftDown = true;
$('#shiftCatch').val(shiftDown);
}
if (event.keyCode==13) {
$('#captured').val(event.target.id);
} else if (event.keyCode==9 && shiftDown==false) {
return $(event.target).each(function() {
var fields = $(this).parents('form:eq(0),calculator').find('select, input:visible');
var index = fields.index(this);
var nextEl = fields.eq(index+1).attr('id');
var firstEl = fields.eq(0).attr('id');
var focusEl = '#'+firstEl;
if (index>-1 && (index+1)<fields.length) {
$('#captured').val(nextEl);
} else if(index+1>=fields.length) {
if ($(this).val() != $(this).data('initial')) {
$('#captured').val(firstEl);
} else {
event.preventDefault();
$(focusEl).focus();
}
}
return false;
});
} else if (event.keyCode==9 && shiftDown==true) {
return $(event.target).each(function() {
var fields = $(this).parents('form:eq(0),calculator').find('select, input:visible');
var index = fields.index(this);
var prevEl = fields.eq(index-1).attr('id');
var lastEl = fields.eq(fields.length-1).attr('id');
var focusEl = '#'+lastEl;
if (index<fields.length && (index-1)>-1) {
$('#captured').val(prevEl);
} else if (index==0) {
if ($(this).val() != $(this).data('initial')) {
$('#captured').val(lastEl);
} else {
event.preventDefault();
$(focusEl).select();
}
}
return false;
});
}
});
});
});
function setFocus() {
with (document.calculator)
var recap = document.getElementById(recaptured.value);
if (recap!=null) {
setTimeout(function() {
if (recap.getAttribute('type')=='text') {
recap.select();
} else {
recap.focus();
}
}, 100 );
}
}
Edit #1: I made a few minor changes to the code, which has brought me a little closer to my intended functionality of the script. However, I only made one change to the code pertaining to the focus: I tried to to disable the tab keydown when pressed on the last element (and also the shift+tab keydown on the first element) in an attempt to force the focus on the element I want without skipping over it like it has been doing. This is the code I added:
$(this).one('keydown', function (event) {
return !(event.keyCode==9 && shiftDown==true);
});
This kind of works. After the page loads, If the user presses tab on the last element without making a change to its value, the focus will be set to the second element. However, the second time the user presses tab on the last element without making a change to its value, and every subsequent time thereafter, the focus will be set to the first element, just as I would like it to.
Edit #2: I replaced the code in Edit #1, with code utilizing event.preventDefault(), which works better. While if a user does a shift+tab keydown when in the first element, the focus moves to the last element as it should. However, if the user continues to hold down the shift key and presses tab again, focus will be set back to the first element. And if the user continues to hold the shift key down still yet and hits tab, the focus will move back to the last element. The focus will shift back and forth between the first and last element until the user lifts the shift key. This problem does not occur when only pressing tab. Here is the new code snippet:
event.preventDefault();
$(focusEl).focus();

You have a lot of code I didn't get full overview over, so I don't know if I missed some functionality you wanted integrated, but for the tabbing/shift-tabbing through form elements, this should do the work:
var elements = $("#container :input:visible");
var n = elements.length;
elements
.keydown(function(event){
if (event.keyCode == 9) { //if tab
var currentIndex = elements.index(this);
var newIndex = event.shiftKey ? (currentIndex - 1) % n : (currentIndex + 1) % n;
var el = elements.eq(newIndex);
if (el.attr("type") == "text")
elements.eq(newIndex).select();
else
elements.eq(newIndex).focus();
event.preventDefault();
}
});
elements will be the jQuery object containing all the input fields, in my example it's all the input fields inside the div #container
Here's a demo: http://jsfiddle.net/rA3L9/

Here is the solution, which I couldn't have reached it without Simen's help. Thanks again, Simen.
$(document).ready(function() {
var options = {
target: '#c_main',
success: setFocus
};
$('#calculator').live('submit', function() {
$(this).ajaxSubmit(options);
return false;
});
$(this).focusin(function(event) {
$('#calculator :input:visible').each(function (i) {
$(this).data('initial', $(this).val());
});
return $(event.target).each(function() {
$('#c_main :input:visible').live(($.browser.opera ? 'keypress' : 'keydown'), function(event){
var elements = $("#calculator :input:visible");
var n = elements.length;
var currentIndex = elements.index(this);
if (event.keyCode == 13) { //if enter
var focusElement = elements.eq(currentIndex).attr('id');
$('#captured').val(focusElement);
} else if (event.keyCode == 9) { //if tab
var newIndex = event.shiftKey ? (currentIndex - 1) % n : (currentIndex + 1) % n;
var el = elements.eq(newIndex);
var focusElement = el.attr('id');
if ($(this).val() != $(this).data('initial')) {
$('#captured').val(focusElement);
} else if ((currentIndex==0 && event.shiftKey) || (currentIndex==n-1 && !event.shiftKey)) {
event.preventDefault();
if (el.attr('type')=='text') {
$.browser.msie ? "" : $(window).scrollTop(5000);
el.select().delay(800);
} else {
$.browser.msie ? "" : $(window).scrollTop(-5000);
el.focus().delay(800);
}
} else if (el.is('select')) {
event.preventDefault();
if (el.attr('type')=='text') {
el.select();
} else {
el.focus();
}
}
}
});
});
});
});
function setFocus() {
with (document.calculator)
var recap = document.getElementById(recaptured.value);
if (recap!=null) {
setTimeout(function() {
if (recap.getAttribute('type')=='text') {
recap.select();
} else {
recap.focus();
}
}, 1 );
}
}
I put my files available to download in my live link: http://www.presspound.org/calculator/ajax/sample.php