Develop Reference

jQuery, how to find an element by attribute NAME?

I found many example finding elements by attribute value BUT not with name. I want to find all elements (can be link, button, anything) with the attribute containing deleteuserid. I tried this:
console.log($('[deleteuserid!=""]'));
but this find "everything" which not even containing the deleteuserid attribute...
something like this: jQuery how to find an element based on a data-attribute value? expect that I dont have a concrete value (in other words, I want to find $("ul").find("[data-slide=*]");

Simply use deleteuserid instead of deleteuserid!="" like following.
console.log($('[deleteuserid]'));

you can use the jquery attribute selector to search by name.
console.log($('[name="deleteuserid"]'));

You can search by simple $('[name="deleteuserid"]')
console.log($('[name="deleteuserid"]'))
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<p name="deleteuserid">
</p>
<div name="deleteuserid">
</div>
<i name="deleteuserid"></i>
<b></b>

$( "*[name*='deleteuserid']" ).addClass('iFoundyou');
JSFiddle

Reference: https://www.w3schools.com/cssref/sel_attr_begin.asp
My demo:
All my selects have id="<f_field_name>"
<select id="f_type" />
<select id="f_employee" />
$('[name="form_monitoria_ligacoes"]').find('[id^="f_"]')

jQuery Switch Button On/Off Should Set Different Data-status & Onclick Function

Still learning jQuery and will be thankful for any help.
I am currently using this jQuery Switchbutton https://github.com/olance/jQuery-switchButton
It uses a checkbox as an input type, and creates span tags with labels.
How would I say that I want on_label to have data-status="accept", and off_label data-status="decline"?
HTML:
<input type="checkbox" id="accept-offer"/>
JS:
$("input#accept-offer").switchButton({
on_label: "Accept",
off_label: "Ignore"
});
Thanks!!

You can try to do like this:
$('.switch-button-label.on').data('status','accept');
$('.switch-button-label.off').data('status','decline');
or:
$('.switch-button-label.on').attr('data-status','accept');
$('.switch-button-label.off').attr('data-status','decline');

Check All Radio Buttons (JSF Component) + jQuery

I've a form in which I'm iterating a datatable, each row has a set of components and one of them is:
<h:selectOneRadio id="chargeWaive" onclick="alert(this.id);" > <f:selectItem itemLabel="Charge" itemValue="charge" /> <f:selectItem itemLabel="Waive" itemValue="waive" />
</h:selectOneRadio>
I've added two links that triggers two similar functions :
<a href="#" onclick="selectAllCharge();">
<h:outputText value="Charge All" />
</a>
<a href="#" onclick="selectAllWaive();">
<h:outputText value="Waive All" />
</a>
So when the user clicks on one these links, all the Charge/Waive radiobuttons should be checked.
I've tried to check the first radio button (test purpose) by using one the following codes, but I always get the same error:
$('#frmResults:billingRecordId:0:chargeWaive:0').attr('checked', true); $('#frmResults:billingRecordId:0:chargeWaive:0').attr('checked', 'checked');
$('#frmResults:billingRecordId:0:chargeWaive:0').prop("checked", true);
The error that I'm getting is: Sintax error, unrecognized expression: billingRecordId
I do know the id is correct because when I look into the compiled JSF code the generated ID for the radio type is:
<input type="radio" name="frmResults:billingRecordId:0:chargeWaive" id="frmResults:billingRecordId:0:chargeWaive:0" value="charge" onclick="alert(this.id);" /><label for="frmResults:billingRecordId:0:chargeWaive:0"> Charge</label>
<input type="radio" name="frmResults:billingRecordId:0:chargeWaive" id="frmResults:billingRecordId:0:chargeWaive:1" value="waive" onclick="alert(this.id);" /><label for="frmResults:billingRecordId:0:chargeWaive:1"> Waive</label>
So at this point I don't know what I'm missing here. Any idea?

jQuery uses CSS selectors to select elements in the HTML DOM tree.
The : is a special character in the CSS selector representing the start of structural pseudo class. So if you use
$('#frmResults:billingRecordId')
then it's basically looking for a HTML element with ID of frmResults and having a pseudo class matching billingRecordId. However, as billingRecordId is not a valid pseudo class at all, nothing will be found.
You'd basically need to escape the colon in CSS selector syntax.
$('#frmResults\\:billingRecordId\\:0\\:chargeWaive\\:0')
Or, IMO cleaner, use the [id] attribute selector.
$('[id="frmResults:billingRecordId:0:chargeWaive:0"]')
Or, to get rid of the chained IDs and indexes.
$('[id$=":chargeWaive"]:first :radio:first')
("select elements with ID ending on :chargeWaive, get the first, then get the first radio button from it")
See also:
How to select JSF components using jQuery?
As a completely different alternative, you can also perform a JSF ajax call to preselect the desired radiobuttons by just setting the model value accordingly in the backing bean's ajax listener method.

Colons can cause problems within jquery selectors. Try escaping them with a double backslash ala:
$('#frmResults\\:billingRecordId\\:0\\:chargeWaive\\:0').attr('checked', true);

Did you try this way
Also use .prop() instead of .attr()
$('[id^="frmResults:billingRecordId:0:chargeWaive:"]').prop("checked", true);

Accessing an array of HTML input text boxes using jQuery or plain Javascript

I'm looking to create a form which contains a dynamic number of input text boxes. I would like each text box to form part of an array (this would in theory make it easier for me to loop through them, especially as I won't know the number of text fields that will eventually exist). The HTML code would like something like:
<p>Field 1: <input type="text" name="field[1]" id="field[1]"></p>
<p>Field 2: <input type="text" name="field[2]" id="field[2]"></p>
<p>Field 3: <input type="text" name="field[3]" id="field[3]"></p>
<p>Field 4: <input type="text" name="field[4]" id="field[4]"></p>
<p>Field 5: <input type="text" name="field[5]" id="field[5]"></p>
This data would then be sent to a PHP script and would be represented as an array - or at least, that's the theory.
So my first question is, is this achievable using HTML? Are forms designed to work that way?
If the answer to that is "yes", how would I then go about accessing each of those using jQuery or failing that, plain old JavaScript?
I've attempted to achieve this using the following jQuery code:
someval = $('#field[1]').val();
and
someval = $('#field')[1].val();
and the following JavaScript:
someval = document.getElementById('related_link_url')[1].value;
But I've not had any luck.
Thanks in advance.
Edit:
I should note that from a Javascript point of view, I've had it working where the ID of each element is something like field_1, field_2 etc. However, I feel that if I can achieve it by placing each text box into an array, it would make for tidier and easier to manage code.

Give each element a class and access the group using jQuery:
<p>Field 1: <input type="text" name="field[1]" class="fields"></p>
<p>Field 2: <input type="text" name="field[2]" class="fields"></p>
<!-- etc... -->
jQuery:
$("input.fields").each(function (index)
{
// Your code here
});
This will run the anonymous function on each input element with a classname of "fields", with the this keyword pointing to the current element. See http://api.jquery.com/each/ for more info.

First of all, id attribute cannot contains [ or ] character.
There is lots of ways to get jQuery/plain JavaScript references to these elements. You can use descendant selector:
<fieldset id="list-of-fields">
<!-- your inputs here -->
</fieldset>
$("#list-of-fields input");
document.getElementById("list....").getElementsByTagName("input");
You can also use attribute selector:
$("input[name^=field]");
I'm not sure whether that's the only way but I think in plain JavaScript you'll have to fetch all input elements (document.getElementsByTagName) and then loop through array of these elements and check each element (whether it has name attribute which value starts with field).

Prototype - Element with styleclass in element with an id?

First of all: I'm new to Prototype JS Framework!
Until now I worked with jQuery.
In jQuery I am able to get an element by coding:
$('#myitemid .myitemclass').val()
html:
<div id="myitemid">
<input type="text" class="notmyclass" />
<input type="text" class="myitemclass" />
<input type="text" class="notmyclass" />
</div>
But how to do this in prototype?
I tried to code:
$('myitemid .myitemclass').value
but this won't work.
Can U help me plz?

Use $$ which returns all elements in the document that match the provided CSS selectors.
var elemValue = $$('#myitemid input.myitemclass')[0].getValue();
Also input.myitemclass is better than .myitemclass because it restricts search to input elements with class name .myitemclass.

If you want to get the named element myitemid, simply use $('myitemid'). This is equivalent to $('#myitemid') or document.getElementById('myitemid'). Your case is more complex, since you want to select a child of a named element. In that case you want to first find the named element, then use a selector on it's children.
$('myitemid').select('input.myitemclass')
Then, to access it's value (since it's a form element), you can add .getValue().
$('myitemid').select('input.myitemclass').getValue()

Should be faster
$("myitemid").down("input[class~=myitemclass]").value