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How to check a checkbox element according to the value in cypress while the value does not exist

How do I check a checkbox element according to the value in cypress, while the value attribute does not exist.
I want to check the checkbox according to the value, not the id, because the id is different for each page.
Because in some pages, the id starts with c1, and some page ids start with c2, and some start with c5.
How would I check the element according to value?
I got the selector for all 3 checkboxes, but it checked all the 3 elements. I want specific element according to value attribute, but there there is no value attribute.
i tried this
cy.get('.x-overlay__wrapper--right input[type="checkbox"]').check()
but it checked all the element
and this checked the first element
cy.get('.x-overlay__wrapper--right input[type="checkbox"]').first().check()
but I want the checked according to value, but here in attributes there is no value attribute.
the value that i want is just written next to checkbox
and here in html

Looking at the html, perhaps search for the text then use parent and sibling commands to shift the subject to the checkbox, something like
cy.contains('span', 'Free Shipping') // find your text
.parent('div') // move to parent div
.siblings('span.checkbox') // move to checkbox span
.find('input') // select it's input
.check();

Example with comments explaining the code:
cy.get('.x-overlay__wrapper--right input[type="checkbox"]').each((checkbox, i) => { // Get the elements and run .each() on them
if (cy.get('.cbx.x-refine__multi-select-cbx')[i].innerHTML === "value") { // If the value is something, perform an action. Replace "value" with the value that you need to test it for
checkbox.check()
}
})

Angular multi-select dropdown and lodash countby

I am kinda drawing a blank on this one facet, and I can't seem to quite figure it out.
So I have a simple HTML select => option element which is populated from the back-end (not really relevant tho)
My question is this:
Let's say I have a pre-made object such as this:
{
keyName1: 450,
keyName2: 800,
keyName3: 300
}
What I want to do is to check if the key name matches a name of an option value in my multi-select dropdown (the values come from an array, using 'ng-repeat' on the option), and if the option value matches the key, add the number value to some sort of increment variable, so I can display the total number of 'keyNames' found.
For example - if a user selects 'keyName1' the incrementer value will total 450. If a user selects 'keyName1' and 'keyName2' the incrementer value will total 1,250.
I am lost on how to accomplish this - right now it is reading only the very first item in the dropdown.
Here is the code doing that:
_.forEach($scope.widget.instance.settings.serviceContractTypes, function (type) {
// if item in array matches what is selected in multi-select option
if(type === $('#contractType:selected').text().trim()) {
// do stuff
}
});
Hope this all made sense, and thanks very much for any direction you might offer...
(does not have to utilize lodash, I'm just used to using it)

jQuery's :selected selector only works for HTML options:
"The :selected selector works for elements. It does not work for checkboxes or radio inputs; use :checked for them."
(https://api.jquery.com/selected-selector/)
You say "I have a simple HTML select => option element which is populated from the back-end (not really relevant tho)"
This could be relevant. By default, an HTML option tag does not support multiple selections; it has to explicitly be created as a select multiple in order to support that. Can you share the HTML code for the option to make it clear whether that's a problem or this is a red herring?
Also, can you echo $scope.widget.instance.settings.serviceContractTypes and share to make sure it's actually matching what's available in the text of the options?
ADDENDUM - Wait, I think I figured it out!
The $('#contractType:selected') selects all the selected options in #contractType and concatenates them. Then $('#contractType:selected').text().trim() trims this down to the first word, which is just the first selected option. You should do something like $('#contractType:selected').text().split(" ") and then check if each type is in the resulting list.

Delete Dropdown values using jquery

I have a situation here,
Using JQuery I'm appending some values in drop down list.. Even it is one or two value that appended in drop down list..
For Add,
tableui+='<option value="">'+resourceadd+'</option>';
$('#resourcess').append(tableui);
When the page reloads automatically the value stored in db.
For example 4 values added in dropdown list (Values are not stored in db), I want to delete last value. I'm using,
$("#resourcess :last-child").remove();
The same condition, I want to delete middle of two values, How to do it??

Assuming you know the value of the option you want to remove, you could use filter:
$('#resources option').filter(function() {
return this.value == 'foo'; // insert your value here.
}).remove();
Or an attribute selector:
$('#resources option[value="foo"]').remove();
If you don't know the value, but do know the position of the option within the select, you could remove it by index using eq():
$('#resources option').eq(1).remove(); // remove the 2nd option

Use jQuery to set select box value to first option

I am dynamically populating a select box with options. When I do this, I want the value of the select box to be the value of the first option (a 'default option', if you like). Sounds really simple, but I just can't get it to work.
var myElement = $('select[name="myName"]');
.... tried the following three variations
// myElement.find('option').first().prop('selected', 'selected');
// myElement.val(myElement.find('options').first().val());
myElement.prop('selectedIndex', 0);
...but the following line gives a blank alert
alert(myElement.val());
Where am I going wrong?

options should be option
myElement.find('option:eq(0)').prop('selected', true);
You can use the eq selector on the option to select the first option.
If you know the value of the first option. Then you could simply do
myElemeent.val('first value') // Which selects the option by default
The 2nd case you tried should work, unless you are not calling at the right point . i.e; waiting for the ajax response to be completed.
Try calling that inside the done or the success (deprecated) handler

You almost got it, drop the 's' in 'options':
myElement.val(myElement.find('option').first().val());
Working jsFiddle

You could also use next code:
myElement[0].selectedIndex = 0;
This get's the Dom element (not jQuery object), works with vanilla Javascript and uses it to set the first option as the selected one based on it's index.

If you want to be sure that your option has a value and is not a placeholder you can do:
$('select option').filter( function (index, option) {
return option.attributes.value
}).val()
That way you'll check if the HTML node has attribute value and is not empty.

jQuery: How to reset multiple dropdowns after they have been cloned?

At the moment my code clones 3 dropdowns everytime you click the add button.
I managed to get it to copy the row exactly because before, the first dropdown would reset by itself but the other two would not so I was just wondering how to reset all 3 dropdowns?
It is easiest to see in this JSFiddle:
http://jsfiddle.net/jydqK/7/
So, if you change the first dropdown to agent and then click the + you will see the second row appears duplicated whereas I would like it to reset to tags, operands and values.
Any help greatly appreciated.

You can use removeAttr to remove selected attribute and then fire a change() event.
In your case:
dropdownclone.find('select.tags option:selected').removeAttr('selected');
dropdownclone.find('select.tags option:first').attr('selected','selected');
dropdownclone.find('select.tags').trigger('change');
Modified example: http://jsfiddle.net/ZF3mc/2/

If I understood your question, you want the duplicated row of selects to reset their values.
In this case you can just remove this:
dropdownclone.find('select').each(function(index, item) {
//set new select to value of old select
$(item).val( $dropdownSelects.eq(index).val() );
});
and replace it with:
dropdownclone.find('option').attr('selected', false);

Find all dropdowns in your clone. For each dropdown, check every option tags for a selected attribute and remove it. Something like this:
clone.find('select').each(function() {
$(this).find('option').each(function() {
$(this).removeAttr('selected');
});
});
Or better yet, find only the selected option tags using :selected filter before removing.