Getting length of toggle classes - javascript

This might be similar to getting length of a class. But I am not getting the actual output for toggle class.
So here is the scenario: I have a table in which there is a checkbox in every row. If check all option is selected, all checkbox is marked. Now the problem is that I want to pass flag as true when all checkbox are checked and false when only some checkboxes are checked. Now I use toggling functionality. So I don't know how I get length of 'unchecked' checkboxes rather than 'unchecked checked' checkboxes.(I am using Div's for styling instead of checkboxes. )
Here is the jsfiddle
Script for counting length:
$("#cntCheck").click(function(){
alert($('.isChecked').length); //Counting Checked CheckBox(Working right).
});
$("#cntUncheck").click(function(){
alert($('.checkBox isChecked').length); //Counting Unchecked CheckBox Except CheckAll checkbox(This is not working)
});

If I understand your (very confusing) question correctly, you're asking how to count the elements that do have the checkBox class but don't have the isChecked class. If so, you can use the .not() method:
$(".checkBox").not(".isChecked").length
Or, the :not() selector:
$(".checkBox:not(.isChecked)").length
Regarding your styling:
"I am using Div's for styling instead of checkboxes."
I would strongly recommend against doing this, because users who don't like to (or are physically unable to) use a mouse or other pointing device can't click your pseudo-checkboxes.

See this fiddle - http://jsfiddle.net/Yp56c/3/
$("#cntUncheck").click(function(){
var notChecked = $('.checkBox').not('.isChecked').length;
alert(notChecked); //This is working
});

Related

jquery get value of checked radio button on load or change

Got this script that gets the value of a checked radio button and prints it out in another tag. It works perfectly when you click a radio button, but I've realized that I need to have some of the radio buttons checked by default.
How do I change this script so that it will output the values of already checked radio buttons on page load as well?
$("input[type='radio']").click(function(){
var radioValue = $(this).val();
if(radioValue){
$(this).closest('section').find('h2 .value').text(radioValue);
}
});
Fiddle: https://jsfiddle.net/tactics/bykf31e6/4/
You can use the :checked selector to find all the checked :radio elements on load, and the loop over them to set the value of the related .value element. Try this:
$(":radio:checked").each(function() {
$(this).closest('section').find('h2 .value').text(this.value);
});
Example fiddle
Note that you should use the change event for binding to radio and checkbox elements to cater for those who navigate websites using their keyboards. Also, if you remove the check that the radio element has a value (which is redundant as they should always have a value) you can simplify the code:
$("input[type='radio']").change(setText); // when user selects
$(":radio:checked").each(setText); // onload
function setText() {
$(this).closest('section').find('h2 .value').text(this.value);
}
Example fiddle

Jquery get Checkbox in span

I have some jquery code where I am trying to select a checkbox when the user clicks on a div. My fiddle is below:
http://jsfiddle.net/5PpsJ/
What i have come up with is this, but it is not selecting the checkbox inside of the span:
$('span[name="' + current + '"]').closest('input:checkbox[id="CB_Selected"]').prop('checked', true);
The full code is in the link
My question is how can i get the select box inside of the span based on its unique name and select it?
n.b I have commented out the hide functio0n in jquery to visually see whether the checkbox is selected or not
EDIT
My ID's are the same because I am working inside of ASP.NET and using a repeater to create the HTML shown in the fiddle. Inside of Repeaters I can not set the ID of item as the Repeater control does not allow me to set the ID with Eval(datasource)
IDs are unique. All you need is this:
$("#CB_Selected").prop('checked', true);
Actually, you don't even need jQuery:
document.getElementByID('CB_Selected').checked = true;
As others have pointed out, it would be preferred to use a class rather than an ID if there are multiple checkboxes. In addition, an input cannot have children, so the closest function won't work; did you mean find (for children) or siblings?
Instead of giving several checkboxes the same ID -- which invalidates your html -- use a class on the checkboxes. Change:
<input id="CB_Selected" type="checkbox" name="ctl00$ContentPlaceHolder_Content_Wraper$ctl01$Repeater_Selected$ctl00$CB_Selected" />
To:
<input class="CB_Selected" type="checkbox" name="ctl00$ContentPlaceHolder_Content_Wraper$ctl01$Repeater_Selected$ctl00$CB_Selected" />
Then you can use the code:
$('#s_' + this.id).find(':checkbox.CB_Selected').prop('checked', true);

jQuery CheckAll Toggle Not Quite Working Correctly

Using:
function CheckToggle(which){
jQuery(which).each(function() {
jQuery(this).attr('checked', !jQuery(this).attr('checked'));
});
}
On first click, all checkboxes get checked, click it again, and they get unchecked.
Second click, no checkmarks show in the boxes, however, the checked="checked" attribute does appear in the element, and dissapears if clicking the checkall again.
How can I keep them showing the checkmark?
In this situation, .prop() would be used instead of .attr(). But honestly, it'd be even better to not use either:
this.checked = !this.checked;
Use prop instead of attr
function CheckToggle(which){
jQuery(which).each(function() {
jQuery(this).prop('checked', !jQuery(this).attr('checked'));
});
}

Element has `checked` attributes but isn't checked?

I am using ThreeDubMedia's drag and drop selection feature to check and uncheck a couple checkboxes. It will check and uncheck them once, but no more than that. What's more, when I look at the elements by using inspect, they start without the checked attribute, as they should; they gain it when selected, as they should; and they lose it when selected again, as they should. However, this is where it gets strange. If I select it a third time, it gains the checked attribute, but does not check! And if I select it a fourth time, nothing happens! I have no idea what's causing this.
http://i.snag.gy/AieOg.jpg
Currently, you are actually removing the attribute (using removeAttr()) instead of just turning it off (e.g. prop('checked', false)).
You should be using prop(). The following works:
if (this.checked) {
$(this).prop('checked', false);
} else {
$(this).prop('checked',true);
}
jsFiddle here.
Or better yet, as #Pointy mentioned:
.drop(function( ev, dd ){
this.checked = !this.checked;
});
jsFiddle here.

Multiple checkbox scripts intervene with each other

a nice member here helped me set up a multiple checkbox example that stores the data to be shown in a div. However, when I try to do multiple of these, they interlap with each other and show the same data in the divs even when I changed variables.
I set up a simple example here:
http://jsfiddle.net/pufamuf/vrpMc/4/
Thank you for your time everyone :)
That's because you're using the same selector in both event handlers: input[type="checkbox"]:checked
This will select all checked checkbox inputs in the page.
You should instead use input[name="car[]"]:checked and input[name="phone[]"]:checked
to select only the inputs with the given name, each time.
In both your functions, you're selecting all of the selected checkboxes. My fix (and someone else might have a better one) would be to add unique ids to the ul's surrounding the li's.
html:
<ul id='electronics'>
<li><input type="checkbox" name="phone[]" value="Nokia" />Nokia</li>
That way you can modify your $('#submit').click handler to something like this:
$('#submit').click(
function()
{
var htmls = "";
$('ul#electronics>li>input[type="checkbox"]:checked').each(
function()
{
htmls += $(this).val() + " ";
}
);
$('.here').html(htmls);
}
);
Check out http://api.jquery.com/child-selector/, http://api.jquery.com/id-selector/ for more info.
Basically, without this or a similar change, there's nothing distinguishing your list of car brands from your list of electronics brands, and your click handlers both consider all of the checked checkboxes.

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