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 - Appending images after input field based on value

Firstly here's the fiddle
I'm trying to append an image after input field, the input field can be selected based on value.
HTML Code:
<input type="checkbox" value="example"> Example
JS Code:
$('input[value="example"]').append("<img src='https://www.google.co.in/images/nav_logo195.png'");
Any help would be appreciated

You should use .after(), instead of .append(). The .append() method inserts the new element as the last child of the element it is called on, whereas .after() inserts the new element after the element it is called on.
$('input[value="example"]').after("<img src='https://www.google.co.in/images/nav_logo195.png'/>");
You were also missing the following characters at the end of your string: />

Html:
<div id="id">
<input type="checkbox" value="bigstock">Big store
</div>
js:
html="<img src='https://www.google.co.in/images/nav_logo195.png'>";
$('#id').append(html).trigger("create");
The jsfiddle link for reference:
http://jsfiddle.net/san_here/y6r78mgy/
Hope, it will usefull.

Get HTML hidden input value in inline jQuery

I want to get a value passed from the controller in jQuery.
I added a hidden input field
<input type="hidden" id="Result" value="#Model.Result" />
And I tried to get the value in Jquery as follows:
$("#Result").val()
Model.Result has values, but in Jquery it shows it has no value.
I am using inline Javascript.

Here is a fiddle and it works perfect. Did you try to put your code into $(document).ready()? For example:
$(document).ready(function{
alert($("#Result").val());
});

Get value of attribute inside input tag using JavaScript

I have tried to get the value from an attribute inside an <input> element using JavaScript, but the result is not shown. Here is my code:
document.getElementsByClassName('button').getAttribute('onClick')[0].innerHTML;
And here is my HTML:
<input type="button" class="button" value="Login to download" onclick="js:self.location='login.php?ret=view&b=55212'"><br/>
I want to get the value inside onclick.

getElementsByClassName
returns array
Not the
getAttribute
So
document.getElementsByClassName('button').getAttribute('onClick')[0].innerHTML;
Should be
document.getElementsByClassName('button')[0].getAttribute('onClick');
And
onClick != onclick

Try this:
document.getElementsByClassName('button')[0].getAttribute('onClick')
This will give you
js:self.location='login.php?ret=view&b=55212'

How to erase the text input that the user typed using JavaScript

<div class = "search ui-widget">
<label for = "keyword"></label>
<input type="text" id="keyword" onkeypress="searchKeyPress(event)" placeholder="Search here" required>
<input type="button" id="btnSearch" onclick="loadDeals('search', keyword.value,'')" />
</div>
$('.search input#keyword').Value('');
Basically what I want is to remove the user's input in the text box after the user clicks another menu tab. I tried $('.search input#keyword').Value(''); and $('.search input#keyword').css("value", ''); but it didn't work.

.val() is the right name of the jQUery method, not Value().
You can use jQuery like this:
$('#keyword').val('');
Or you can use plain javascript like this:
document.getElementById('keyword').value = '';
If there are more input fields beside the ones you posted and you want to clear all inputs you can use:
$('.search input').val('');

Here's a pure javascript solution:
document.getElementById('keyword').value = '';

Since HTML id attributes are supposed to be unique I would recommend not using the '#keyword' id in your jquery selector. The solution does work if there's only one text field, but it isn't scalable to multiple text fields. Instead, I would make 'keyword' a class for the input element and use the selector:
$('.search input.keyword').val('');
This is very similar to the solution Sergio gave except it allows you to control, via the 'keyword' class, which input elements have their values cleared.

Use this
$("the_class_or_id").val("");
Link for this: jQuery Documentation
This is introduced in jQuery API. You can use .value in JavaScript, but in jQuery its val(). It gets the value of the object and to clear the value, just add quotes!
JavaScript code would be:
document.getElementById("id_name").value = "";