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Jquery Code to show link while checkbox is checked on initial page load

I have a following piece of code which works fine, when i check or uncheck the checkbox, but when i initially loads my page and some of my checkboxes are already checked, i want to show the div box to be visible but the code is not doing so, am i missing anything
please guide through the following code
Thanks
$(document).ready(function() {
//check the state of the checkox
$(".showinvoice").is(':checked') {
var stats = $(this).attr('data-id');
$("#"+stats).css('display','block');
}
//check the code only when the click button is triggered
$(".showinvoice").click(function(e) {
var getStudent = $(this).attr('data-id');
if ($(this).is(':checked')) {
$("#"+getStudent).css('display','block');
} else {
$("#"+getStudent).css('display','none');
}
});
});

Firstly you're missing the if statement around the .showinvoice state condition.
Secondly you should use the data() method to access data-* attributes. You should also use the change method when dealing with radio and checkbox inputs so that the events are still raised by users who navigate using the keyboard. Lastly you can remove the if statement and just use toggle() instead.
To achieve what you require all you need to do is raise a change event on the checkboxes on load of the page. Try this;
// check the state of the checkox
if ($(".showinvoice").is(':checked')) {
var stats = $(this).data('id');
$("#" + stats).show();
}
// check the code only when the click button is triggered
$(".showinvoice").change(function(e) {
var getStudent = $(this).data('id');
$("#" + getStudent).toggle(this.checked);
}).change(); // < to run this code when the page loads

Try changing your first part to...
//check the state of the checkox
$(".showinvoice:checked").each(function() {
var stats = $(this).data('id');
$("#"+stats).css('display','block');
});

Why does a checkbox always return the same value?

Edit3: Before more people keep downvoting this, please note this is not a duplicate question.
I'm working on a site that needs a table full of checkboxes and each one needs to be toggled on/off. Sometimes toggling one on needs to toggle others off and so on.
I did not build the base code, but since it was rather messy with all the logic going on, I decided to make some work like radios so we only have one base function to make much of the logic work.
I also have a function to enable/disable some checkboxes. It all works nicely, no problems at all.
But now there's another thing in play which is a text input. If a certain value is selected in it, some checkboxes automatically get turned on/off and locked in. The same base function is used to do this. But when a checkbox gets disabled with this, and then re-enabled, the following function keeps returning always true only for that checkbox:
$('input[type="checkbox"]').change(function() {
// Make checkboxes with names work like radios (radios can't be toggled off)
if ($(this).attr("name")) {
// Save clicked toggle value
var selected_toggle = $(this).attr('value');
// disable all and then toggle clicked one on
if ($('input[value="'+selected_toggle+'"]').prop("checked")) {
console.log("This is checked");
$('input:checkbox[name='+$(this).attr('name')+']').each(function() {
toggle_checkbox($(this).attr('value'), 'disabled');
});
toggle_checkbox(selected_toggle, 'enabled', 'on');
}
// Enable them all back if unchecking
else {
console.log("This is unchecked");
$('input:checkbox[name='+$(this).attr('name')+']').each(function() {
toggle_checkbox($(this).attr('value'), 'enabled');
});
$(this).parent().toggleClass("on");
}
}
else {
// Toggle them on or off
$(this).parent().toggleClass("on");
}
});
The obvious thing would be to say "something is different when locking/unlocking that checkbox", but it's all the same function and same way all other toggles get disabled, this is used from toggle_checkbox function:
function toggle_checkbox(toggle, value, on, lock) {
// Disable the toggle completely
if (value == 'disabled') {
$('input[value="'+toggle+'"]').attr('disabled', 'disabled');
$('input[value="'+toggle+'"]').parents('li').addClass('disabled');
$('input[value="'+toggle+'"]').parent().removeClass('on');
$('input[value="'+toggle+'"]').prop('checked', false);
}
// Enable a toggle back
if (value == 'enabled') {
$('input[value="'+toggle+'"]').parents('li').removeClass('disabled');
// Turn it on
if (on == 'on') {
$('input[value="'+toggle+'"]').parent().addClass('on');
$('input[value="'+toggle+'"]').prop('checked', true);
}
// Lock it on or remove disabled
if (lock == 'lock') {
$('input[value="'+toggle+'"]').attr('disabled', 'disabled');
}
else {
$('input[value="'+toggle+'"]').removeAttr('disabled');
}
}
}
When I remove the above code for name attributes, the checkbox works fine. Yet though every other checkbox returns Checked/unchecked properly, when clicking that specific un-disabled one, it always returns "this is checked".
I was using is(":checked") before, changing to prop made no difference.
Edit: As said in the comments, using prop or attr didn't make a difference. This is the code that is locking the checkbox that gets "stuck":
function set_hint_toggles(type, state) {
if (type == 'apples') { // Set when you select something with apples
toggle_checkbox('pears', 'disabled');
toggle_checkbox('apples', 'enabled', 'on', 'lock');
toggle_checkbox('oranges', 'disabled');
}
if (state == 'off') { // This is set when a reset button is pressed
var toggles_type = $('#hidden-input-with-value').val();
toggle_checkbox(toggles_type, 'enabled'); // This checkbox gets stuck, all others continue working
$('#text-input').removeAttr("disabled"); // Allows to type something again
}
}
Edit2: After trying Marvin answer I got a slighly different result that could help finding what's wrong:
This stuck checkbox has a "checked" and "disabled" state. When the reset button is clicked, disabled gets removed, but it remains checked (or should). When I tried to click the checkbox with the above code after reset, it was like it got re-checked once, and then kept stuck with checked.
Using [0].disabled = false, I can then keep toggling the checkbox on and off, but no js gets activated for it, and every click still returns checked.
Edit4: When attempting to use
toggle_checkbox(toggles_type, 'disabled');
toggle_checkbox(toggles_type, 'enabled');
In the code that makes the checkbox get stuck (set_hint_toggles(off) function above), it gets disabled only. Afterwards, this checkbox keeps returning always false instead of always true.

Theres a litle tip that you can use to improve your code.. Without a jsfiddle or some example, i'm afraid that i can't help you more than this. You should try using the DOM native api to set the disabled item
$('input[value="'+toggle+'"]')[0].disabled //returns if the element is disabled
$('input[value="'+toggle+'"]')[0].disabled = true //set element as disabled or not
The same works for the checked attribute.
$('input[value="'+toggle+'"]')[0].checked //returns if the element is checked
$('input[value="'+toggle+'"]')[0].checked = true //set element as checked or not

It truly was something wrong in the first block of code I posted. I'm now using this based off Adeneo's suggestion on changing the selectors and it's working perfectly:
// Search checkbox toggles
$('input[type="checkbox"]').change(function() {
// Make checkboxes with names work like radios (radios can't be toggled off)
if ($(this).attr("name")) {
if (this.checked) {
$('[name='+ this.name +']').each(function() {
toggle_disabled( this.value, 'disabled');
});
toggle_disabled( this.value, 'enabled', 'on');
}
else {
$('[name='+ this.name +']').each(function() {
toggle_disabled( this.value, 'enabled');
});
$(this).parent().toggleClass("on");
}
}
// Else if no name, just toggle on class
else {
$(this).parent().toggleClass("on");
}
});
I believe the problem was in the selector used for testing if the checkbox was on.
I'm also using prop on everything else now, but this did not change anything and does not seem like it had to do with the problem at all. The other suggestions also did not do anything.

adding removing classes for checkbox and drop down

I am adding and removing class to the elements on change event. The below code is working for dropdown and radio buttons, but is not working for checkbox and dropdown. The disable class gets applied, but on unchecking it is not getting enabled..
$(function() {
$switchers.each(function(index, elem) {
$(elem).prop("disabled", false).removeClass("c_disabled")
.closest(".wrapper")
.find(".overlay").remove();
if ($(elem).prop('tagName') == 'SELECT') {
$(elem).children().removeClass('dis').removeAttr('disabled');
}
});
How can I make it work for checkbox's check, uncheck.
For example, If you see my fiddle when you check C3, dropdown option Two gets disabled, but when you uncheck it, it doesn't get enabled again, It gets enable while you uncheck other checked checkbox.
What is the reason for this? When I have a combination of radio and dropdown it works for that.
I want it to enable it once I uncheck C3
It has anything to do with the point of checkbox being multiselect?
I am able to check If the options are checked or unchecked with the below code.
$(".checkdrop").on("change", function(e) {
var $this = $(this);
var ischecked = e.target.checked;
if(ischecked) {
alert("checked it");
}
else
{
alert("unchecked it");
//$(elem).removeClass('c_disabled').removeAttr('disabled');
}
});
Here is my fiddle
Please help.

These lines are working on their own. You may check it on the console.
$(".c_disabled").prop("disabled",false);
$(".c_disabled").removeClass("c_disabled");

Disable Submit button if none of selector options is selected

I would like to disable the Submit button on a search form that only contains select dropdowns. There are several similar questions here but I most of them deal with fields. The closest thing to my case is Disable submit button if all three of three specific dropdown fields are empty. I modified the solution supplied in JSFiddle to feature an empty option, and did get it working -- but only in JSFiddle, not on my page.
I use the same code from the proposed answer (only changed IDs):
$('#submit').attr('disabled','disabled');
$('select').change(function(){
if ( $(this).hasClass('require_one') ){
$('#submit').removeAttr('disabled');
}
});
$('#submit').click(function() {
$('#searchform').submit();
});
I add the above code right after I include the jquery.js (v. 1.9.1).
I generate the form dynamically, but in JSFiddle I use exactly what is seen in the page source: http://jsfiddle.net/cheeseus/d5xz6aw8/8/
I have no idea why I can't get it to work on the actual page, hope those more knowledgeable can help sort it out.
And, if possible, I would also like the Submit button to be disabled again if all three selects are set to blank values again.

I usually don't like using the ID(3) for CSS selector since you can have only one ID selector with that name on the document and there might be another element already with the same ID. How about using the class hierarchy instead to pinpoint the button element?
In any case you need to re-check the count everytime what you select on what is empty:
var $submitButton=$('.selector .btn');
var $selectors=$('.selector select.require_one');
$submitButton.attr('disabled','disabled');
$('.selector select.require_one').change(function(){
var $empty=$selectors.filter(function() { return this.value == ""; });
if ( $selectors.filter(function() { return this.value == ""; }).length == $selectors.length ){
$submitButton.attr('disabled','disabled');
} else
{
$submitButton.removeAttr('disabled');
}
});
$submitButton.click(function() {
$('#searchform').submit();
});
JSFiddle code here

You can just use a simple count to see if you should display the button or not. Here is jQuery code.
var count = 0;
$('.require_one').change(function() {
count++;
if (count >= 3) {
$('#submit').removeAttr('disabled');
}
});
$('#submit').attr('disabled','disabled');

I think this is because you didn't check is your document ready.
I added few improvements:
caching jquery object in variables, makes your code a bit faster (you don't look for it everytime select is beeing changes).
used recommended way of binding events - 'on' function
'disabled' is property not an attribute, jQuery has dedicated method to use
on select change - check all selects if there is any not selected, it there is - set prop disabled to true, otherwise set false.
instead of disabling submit at initialization, trigger same action you do when selected is beeing changed (if you start with option selected in all select initial state won't be disabled).
$(document).ready(function () {
var $submit = $('#submit');
var $selects = $('select.require_one');
$submit.on("click", function() {
$('#searchform').submit();
});
$selects
.on("change", function(){
var $not_selected = $selects.filter(function() {
return !$(this).val();
});
$submit.prop('disabled', $not_selected.length ? true : false);
})
.first()
.triggerHandler('change');
});

Triggering a jquery action when the users mark a Checkbox

im very new in javascript and jquery. I have this checkbox:
<label for="editable">Editable </label><input name="editable" type="checkbox" id="edita"/>
And this jquery action:
$('#slickbox1').toggle(400);
return false;
I want to execute that action when the checkbox is checked. Thanks!

You could try:
$('#edita').change(
function() {
if ($(this).is(':checked')) {
$('#slickbox1').toggle(400);
}
});
Although it's worth noting that running the toggle() method only when it's checked (assuming that it starts off un-checked) involves the user clicking the input once to show it, and then again to remove the check and again to re-check it so that it hides as a result of the toggle().
It might be worth considering:
$('#edita').change(
function() {
if ($(this).is(':checked')) {
// checked
$('#slickbox1').show(400);
}
else {
// un-checked
$('#slickbox1').hide(400);
}
});
Which shows $('#slickbox1') if the check-box is checked, and hides it if not,
Or:
$('#edita').change(
function() {
$('#slickbox1').toggle(400);
});
Which toggles the $('#slickbox1') between show() and hide() when the input is checked and un-checked.
Edited to address the question raised by DomingoSL (the OP) in comments:
...can you please make an edit to see the procedure if now the triger is not a checkbox but a button?
There are two changes that need to be made to accommodate this:
a button has no change event, so it would have to use click() instead, and
a button has no :checked (or equivalent) state, so the if/else becomes redundant.
One way of doing it, though, and I'm assuming your element names remain the same since you've posted no information to the contrary, is:
$('#edita').click(
function(){
$('#slickbox1').toggle(400);
});