Get value of a checked radio button - javascript

How can I get a value of a checked radio button of a group of related radio buttons without using their ids? I can try something like this, but it is not generic enough.
var boxes = $('input[name=BankAccountTypeGroup]:checked');
$(boxes).each(function () {
if ($(this).val() == 'Savings') {
//
}
})

Radio buttons are grouped by the name attribute, so your current selector should work fine (without even looping) -- if you have multiple groups of common named groups, you can use the ^= (starts with) inside attribute selector to get all the groups.
Example, you have multiple radio groups starting with "BankAccount"
var groups = $(":radio[name^=BankAccount]:checked").map(function() {
return this.value;
}).get();
.map() returns a nice array of all your checked values for radio groups starting with "BankAccount"

var boxes = $('input[name=BankAccountTypeGroup]:checked');
if (boxes.length==1) //test it, maybe there is no radio checked
{
alert(boxes[0].value); //boxes[0] is the first and only-checked element,
}

Try this....
var $boxes = $('#yourcontaineridOfAllCheckboxes').find('input[type=radio]:checked'));
$($boxes).each(function () {
if ($(this).val() == 'Savings') {
//
}
})

Related

Javascript disabled button if checkboxes are not choosen - problem

I wrote a code, that make the button not disabled when you check at least one checkbox with class "sum".
I want to change the code, so I have to classes for and you can check only one checkbox (or two of them) to make the button not disabled.
This is what I have and it works with only one class:
var checkBoxes = $('.sum');
checkBoxes.change(function () {
$('#dashboardbuttonpay').prop('disabled', checkBoxes.filter(':checked').length < 1);
});
$('.sum').change();
});
This is what I tried to do, but OR op does not work:
var checkBoxes = $('.sum' || **'.checkAll'**);
checkBoxes.change(function () {
$('#dashboardbuttonpay').prop('disabled', checkBoxes.filter(':checked').length < 1);
});
$('.sum' || **'.checkAll'**).change();
});
The code works with && operator, but I do not need this.
Using the OR operation on strings this way does not make sense. If you do this with two non-empty strings, you always get the first operand:
console.log('a' || 'b')
In order to select multiple elements, you just separate them by comma:
var checkBoxes = $('.sum, .checkAll');
The code works with && operator, but I do not need this.
Not really. 'a' && 'b' always returns 'b'.
You could check for the amount of checked inputs then add/remove the disabled property in the change event handler.
var checkBoxes = $('.sum','.checkAll');
checkBoxes.change(function () {
if (checkBoxes.filter(':checked').length > 0) {
$('#dashboardbuttonpay').prop('disabled', null);
} else {
$('#dashboardbuttonpay').prop('disabled');
}
});
This way you capture if one or more checkboxes are checked before remove the disabled attribute of the button. Which lets you enable the button with either one or both checkboxes selected.
var checkBoxes = $('.sum','.checkAll');
checkBoxes.change(function () {
if(checkBoxes.filter(':checked').length > 1)
$('#dashboardbuttonpay').prop('disabled',true);
else
$('#dashboardbuttonpay').prop('disabled',false);
});

How to use javascript to get the value of checked checkbox dynamically

I'm new to JavaScript.
I have a webpage that the users can search the document ID and add it to their favourite. after submitting the search criteria, it shows a list ID and a checkbox next to it. so the user can check the checkbox or uncheck it to add and remove them from their list.
My issue is my code can't get the value of the checkbox generated. for example, there are three checkbox generated, chk1,chk2,chk3. when none of them are checked, my code is working I can get the value of the checkbox. but when one of them is checked for example, chk3 is checked, when I check chk1, it still shows the value of chk3 rather than chk1. I want to get the value of that checkbox just checked. I'm struggled to make it right.
<tr><%do until results_rs.EOF%>
<td class="tdid"><%Response.Write results_rs("id")%></td>
<td><input type="checkbox" id="myCheckbox" name ="myf[]" value="<%=results_rs("id")%>" onchange="myfc()">
<script>
function myfc(){
var selchb = getSelectedChbox(this.form);
alert(selchb)
}
function getSelectedChbox(frm) {
var selchbox = null;
var chk_arr=document.getElementsByName("myf[]")
var chklength=chk_arr.length
for (k = 0; k < chklength; k++) {
if (chk_arr[k].checked == true)
selchbox=chk_arr[k].value
}
return selchbox
**strong text**// rs.close;
// connection.close
}
</script></td>
<%results_rs.MoveNext%>
</tr>
The minimal change would be to pass this into myfc:
onchange="myfc(this)"
...and then use that in myfc:
function myfc(cb){
alert(cb.value);
}
But you might look into more modern event handling with addEventListener and such.
Note that there's no need to put an id on the checkbox, and in fact, it's invalid to have more than one checkbox with the same id, so probably best to just remove the id="myCheckbox" part entirely.
IDs in JS must be unique. Use a class class="myCheckbox"
Then you can do
window.addEventListener("load",function() {
var checks = document.querySelectorAll(".myCheckbox");
for (var i=0;i<checks.length;i++) { // all .myCheckbox
checks[i].addEventListener("click",function() {
console.log(this.checked,this.value); // this specific box
var checks = document.querySelectorAll(".myCheckbox:checked");
for (var i=0;i<checks.length;i++) { // all CHECKED .myCheckbox
console.log(checks[i].value); // only checked checkboxes are shown
}
});
}
});
In your case for example
window.addEventListener("load",function() {
var checks = document.querySelectorAll(".myCheckbox");
for (var i=0;i<checks.length;i++) { // all .myCheckbox
checks[i].addEventListener("click",function() {
if (this.checked) myfc(this.value); // this specific box
});
}
});

Bootstrap form group checkboxes doesn't get checked in between nav pills

Here's the JSFiddle of my work: https://jsfiddle.net/pb23Ljd8/5/
I use Bootstrap nav-pills to show all products and categorized too like this:
And I based my checkboxes from here: http://bootsnipp.com/snippets/featured/fancy-bootstrap-checkboxes
I count the number of products checked in between the tabs like this:
jQuery(document).ready(function($) {
jQuery(".select-product").change(function() {
jQuery(".counter").text(jQuery("[type='checkbox']:checked").length);
});
});
But the glyphicon check icons doesn't appear on the second and third tabs for some reason. But when I click the products on the second and third, it increases the counter and also when I view it on the first tab, it is checked.
I just need the products to also be visibly checked on the second and third tabs and not only on the first one so it's not confusing for the user.
Ideas, anyone?
Edit: I fetch the list of products from CMS so it's dynamic. I now understand that the duplication of IDs is causing the problem.
Before we try and resolve this issues, we should break it down and see what the actual problem is.
First, let's check if we remove the content from tab 1b is the issue still present?
Nope, if we remove the checkboxes from the first tab, the checkboxes function normally on the second and third.
Fiddle #1
What if we change the id of the checkboxes (remember ids should be unique).
Notice how Book #1 now works if we change the first checkbox's id to 1a.
Fiddle #2
So now we "know" the issue is likely due to the fact that we are using checkboxes with the same id value (ref). The "issue" is now:
How do we check multiple checkboxes if one is checked
(or something like that)
Here's what I would do:
assign all "like" checkboxes the same class (ex. Book #1 checkboxes will have class b1)
use jQuery/javascript to make sure all that all "like" checkboxes, check and uncheck in unison
Working Example
EDIT
Dynamic values for the classes can be achieved by putting the IDs as classes so the similar products would match. These can be passed to JS like this assuming that $products_id_array is a PHP array that contains all the classes needed.
var productIDs = <?php echo json_encode($products_id_array) ?>;
and then creating the snippet of jQuery code on the fiddle like this
productIDs.forEach(function(val, key) {
jQuery('.' + val).on('change', function(){
jQuery('.' + val).prop('checked',this.checked);
});
})
Try this JS, This will work
jQuery(".select-product").change(function() {
var checkValue = jQuery(this).prop('checked');
$('.select-product#' + jQuery(this)[0].id).each(function() {
if (checkValue == true) {
jQuery(this).prop('checked', true)
} else {
jQuery(this).prop('checked', false);
}
});
var uniqueId = [];
jQuery("[type='checkbox']:checked").each(function() {
uniqueId.push(jQuery(this)[0].id);
});
Array.prototype.getUnique = function() {
var u = {},
a = [];
for (var i = 0, l = this.length; i < l; ++i) {
if (u.hasOwnProperty(this[i])) {
continue;
}
a.push(this[i]);
u[this[i]] = 1;
}
return a;
}
jQuery(".counter").text(uniqueId.getUnique().length);
});

Checkboxes that display results with jQuery

I am trying to have the user check the boxes they are interested in getting resources for and then click the button to get a list of those resources that are hyperlinked to those resources. The hyperlinks (ul id="results” in HTML) are hidden until they called upon by the button “Get Resources”.
Plus I would like to add text to it before results saying “You have indicated an interest in:” (line break) then a listing the hyperlinks (line break) “Please click on the links to learn more”. If no check box is selected the div id=“alert” displays, which I got to work.
I think I am very close, I just can’t seem to get the list of resources.
Here is a link to my coding:
JSFiddle Code sample
$(document).ready(function() {
$('#alert').hide();
$('#results > li').hide();
/* Get the checkboxes values based on the parent div id */
$("#resourcesButton").click(function() {
getValue();
});
});
function getValue(){
var chkArray = [];
/* look for all checkboxes that have a parent id called 'checkboxlist' attached to it and check if it was checked */
$("#checkBoxes input:checked").each(function() {
chkArray.push($(this).val());
});
/* we join the array separated by the comma */
var selected;
selected = chkArray.join(',') + ",";
/* check if there is selected checkboxes, by default the length is 1 as it contains one single comma */
if(selected.length > 1){
// Would like it to say something before and after what is displayed
$('#results > li.' + $(this).attr('value')).show();
} else {
$('#alert').show();
}
}
I'd ditch the selected variable and just check the chkArray contents against the list item classes like:
function getValue() {
var chkArray = [];
/* look for all checkboxes that have a parent id called 'checkboxlist' attached to it and check if it was checked */
$("#checkBoxes input:checked").each(function () {
chkArray.push($(this).val());
});
$('#results li').each(function () {
if ($.inArray($(this).attr('class'), chkArray) > -1) $(this).show()
else($(this).hide())
})
/* check if there is selected checkboxes, by default the length is 1 as it contains one single comma */
if (!chkArray.length) {
$('#alert').show();
//alert("Please at least one of the checkbox");
}
}
jsFiddle example
I found a straightforward way of achieving what you want. DEMO: https://jsfiddle.net/erkaner/oagc50gy/8/
Here is my approach: I looped through all checkboxes. This way I could get the index of the current item in the original list, i, and use this index to display the corresponding item in the second list. I filter the checked items by using .is(':checked') condition, and then added them item to the array:
function getValue() {
var chkArray = [];
$("#checkBoxes input").each(function (i) {//now we can get the original index anytime
if($(this).is(':checked')){//is the item checked?
chkArray.push($(this).val());//if so add it to the array
var selected;
selected = chkArray.join(", ");
if (selected.length) {
$('#results').find('li').eq(i).show();//show the corresponding link by using `i`
} else {
$('#alert').show();
}
}
});
}
Last thing in your $(document).ready function, add:
$("#checkBoxes input:checkbox").click(function() {
$('li.' + $(this).val().replace(/ /g, '.')).show()
});
JSFiddle
Explanation:
On document ready, add a click handler to the checkboxes that shows the corresponding hidden list item below. The tricky thing here is the spaces in the list names. This makes each word a separate classname, so simply combine the list names with a dot . which results in a sequential classname call in jQuery.
By using <li class="Fitness & Recreation"> as a list item classname, you are giving this item 3 classnames: Fitness, &, and Recreation. In jQuery you select elements with multiple classnames by including each name preceded by a dot .. For example, selecting a list item element with the classnames foo, bar, and baz:
$('li.foo.bar.baz').show()
In the case of <li class="Fitness & Recreation">:
$('li.Fitness.&.Recreation').show()
Since these values are stored in the value attribute of the checkboxes we use jQuery to pull these values: $(this).val(), replace the spaces with dots: .replace(/ /g, '.'), and concatenate the result to the li. portion to access the appropriate list item.

Modify function to filter by several data-attributes simultaneously

The function below allows users to filter products by data-attributes, and accommodates filtering by multiple values simultaneously. It does this by creating an array of the values selected, and when any of the values are clicked (in this case checked/unchecked) it hides all the items and then re-shows those that match the values in the updated array.
It works correctly when filtering for one data-attribute, but when combined to filter by more than one attribute it no longer shows all results matching any of the values and instead only shows results matching all the specified values.
I've posted a fiddle which demonstrates the problem here: http://jsfiddle.net/chayacooper/WZpMh/94/ All but one of the items have the values of both data-style="V-Neck" and data-color="Black" and they should therefore remain visible if either of the filters are selected, but if another value from a different data-attribute some of the items are hidden.
$(document).ready(function () {
var selected = [];
$('#attributes-Colors *').click(function () {
var attrColor = $(this).data('color');
var $this = $(this);
if ($this.parent().hasClass("active")) {
$this.parent().removeClass("active");
selected.splice(selected.indexOf(attrColor),1);
}
else {
$this.parent().addClass("active");
selected.push(attrColor);
}
$("#content").find("*").hide();
$.each(selected, function(index,item) {
$('#content').find('[data-color *="' + item + '"]').show();
});
return false;
});
$('#attributes-Silhouettes *').click(function () {
var attrStyle = $(this).data('style');
var $this = $(this);
if ($this.parent().hasClass("active")) {
$this.parent().removeClass("active");
selected.splice(selected.indexOf(attrStyle),1);
}
else {
$this.parent().addClass("active");
selected.push(attrStyle);
}
$("#content").find("*").hide();
$.each(selected, function(index,item) {
$('#content').find('[data-style *="' + item + '"]').show();
});
return false;
});
});
Both of your handlers are updating the selected array, but only one handler executes on a click. The first one if a color was (de)selected, the second if a style. Let's say you've clicked on "Black" and "Crew Neck". At that time your selected array would look like this: [ "Black", "Crew_Neck" ]. The next time you make a selection, let's say you click "Short Sleeves", the second (style) handler executes. Here's what is happening:
Short_Sleeves gets added to the selected array.
All of the items are hidden using $("#content").find("*").hide();
The selected array is iterated and items are shown again based on a dynamic selector.
Number 3 is the problem. In the above example, a style was clicked so the style handler is executing. Any items in the selected array that are colors will fail because, for example, no elements will be found with a selector such as $('#content').find('[data-style *="Black"]').show();.
I would suggest 2 things.
Keep 2 arrays of selections, one for color, one for style.
Combine your code to use only a single handler for both groups.
Here's a (mostly) working example.
Note that I added a data-type="color|style" to your .filterOptions containers to allow for combining to use a single handler and still know which group was changed.
Here's the full script:
$(document).ready(function () {
// use 2 arrays so the combined handler uses correct group
var selected = { color: [], style: [] };
// code was similar enough to combine to 1 handler for both groups
$('.filterOptions').on("click", "a", function (e) {
// figure out which group...
var type = $(e.delegateTarget).data("type");
var $this = $(this);
// ...and the value of the checkbox checked
var attrValue = $this.data(type);
// same as before but using 'type' to access the correct array
if ($this.parent().hasClass("active")) {
$this.parent().removeClass("active");
selected[type].splice(selected[type].indexOf(attrValue),1);
}
else {
$this.parent().addClass("active");
selected[type].push(attrValue);
}
// also showing all again if no more boxes are checked
if (attrValue == 'All' || $(".active", ".filterOptions").length == 0) {
$('#content').find('*').show();
}
else {
// hide 'em all
$("#content").find("*").hide();
// go through both style and color arrays
for (var key in selected) {
// and show any that have been checked
$.each(selected[key], function(index,item) {
$('#content').find('[data-' + key + ' *="' + item + '"]').show();
});
}
}
});
});
UPDATE: incorporating suggestions from comments
To make the handler work with checkboxes instead of links was a small change to the event binding code. It now uses the change method instead of click and listens for :checkbox elements instead of a:
$('.filterOptions').on("change", ":checkbox", function (e) {
// handler code
});
The "All" options "hiccup" was a little harder to fix than I thought it would be. Here's what I ended up with:
// get a jQuery object with all the options the user selected
var checked = $(":checked", ".filterOptions");
// show all of the available options if...
if (checked.length == 0 // ...no boxes are checked
|| // ...or...
checked.filter(".all").length > 0) // ...at least one "All" box is checked...
{
// remainder of code, including else block, unchanged
}
I also added an all class to the appropriate checkbox elements to simplify the above conditional.
Updated Fiddle

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