Develop Reference

Change element text value using jquery not work

I have one form generated from rails. I tried to change to the input order_bill using Jquery in the firefox firebug console, but it does not work. I am new to jQuery.
<form class="edit_order" id="edit_order_1" action="/orders/1" accept-charset="UTF-8" method="post">
<input name="utf8" type="hidden" value="✓" /><input type="hidden" name="_method" value="patch" />
<input type="hidden" name="authenticity_token" value="1IBaRCZ4S1hYp1" />
..
<div id="bill", class="field">
<label for="order_应付款项">应付款项</label><br>
<input type="text" value="4200" name="order[bill]" id="order_bill" />
</div>
<div class="actions"> .. </div>
<div class="actions">
</div>
</form>
In the firebug JS console,
$('#order_bill').html("asdasdddddddddddddddd");
$('#order_bill').html("asdasdddddddddddddddd");
$('#order_bill').html("asdasdddddxx");
$('#bill').html("asdasdddddxx");
But none change on the Html page. Am I wrong?

Try this:
$('#order_bill').val("asdasdddddddddddddddd");
instead of html();
because the value you want to change is present in value attribute of tag.

You may need to make sure you import a jquery library in your html page
http://code.jquery.com/jquery-2.2.4.min.js
if you want to get value just Type
$('#order_bill').value
and set the value
$('#order_bill').value = "enter Value"
But if You Want to add a text in div using jquery
$('#order_bill').html("Value");

jQuery targeting selector by input type and form name

I want to target any input of text type belonging to a form of a specific name. Because the form will have numerous input fields, I don't want to target a particular input name, but rather, capture the blur (or focusout) event for any input[type="text"] occurring within the form wrap.
My present code, which doesn't work:
$( document ).ready(function() {
$('form[name="tax_form"] input[type="text"]').on("blur",function() {
alert($(this).val());
});
});
I answered my own question. Because the code sample is essentially correct, there is no need for multiple people to try to solve the unsolvable. The problem had something to do with where I placed the javascript code, and nothing to do with structure or syntax of the code, itself.

The way the event "change" works is what it sounds like you want. An event handler doesn't actually fire when the input is clicked or if text is keyed in, it fires when text is entered and then the input loses focus.
In the following Snippet the same selector you are using is delegated to the "change" event. You'll notice that the ['tax_form'] has 4 text inputs yet the last one is the only one working. The reason is because if an input isn't assigned a type attribute, then by default type is 'text". So when using a selector based on an input's type="text", you must keep that in mind. So if you are in full control of your HTML, make sure that each input has a type attribute with an explicit value, or use classes which is better IMO.
SNIPPET
$(document).ready(function() {
$('form[name="tax_form"] input[type="text"]').on("change", function() {
alert($(this).val());
});
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<form name='notIt'>
<fieldset>
<legend>Not a Tax Form</legend>
<input>
<input type="text">
<input>
<input type="text">
</fieldset>
</form>
<br/>
<br/>
<form name='stillNotIt'>
<fieldset>
<legend>Still not a Tax Form</legend>
<input type="text">
<input>
<input type="text">
<input>
</fieldset>
</form>
<br/>
<br/>
<form name='tax_form'>
<fieldset>
<legend>Tax Form</legend>
<input class='klass' value='TEXT INPUT BY DEFAULT'>
<input value='TEXT INPUT BY DEFAULT'>
<input name='text' value='TEXT INPUT BY DEFAULT'>
<input type='number'>
<input type='text' value='THIS ONE COUNTS'>
</fieldset>
</form>

Previous commentators were right, that my code was fine as-is. I took my selector code out of a header script file, and placed it at the bottom of my footer script, and it worked as expected.
In the end, it wasn't my code that was the problem, but rather something to do with where I placed it. Possibly other javascript or jQuery code stepping on it.

Your code should work fine. Here's a working example of it to prove it's working. The tax_form fields should console.log() on blur. The another_form should not.
$(function() {
$('form[name="tax_form"] input[type="text"]').on("blur",function() {
console.log($(this).val());
});
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<h1>Tax Form</h1>
<form name="tax_form">
<input type="text" name="first" value="first">
<input type="text" name="second" value="second">
<input type="text" name="third" value="third">
</form>
<h1>Another Form</h1>
<form name="another_form">
<input type="text" name="first2" value="first2">
<input type="text" name="second2" value="second2">
<input type="text" name="third2" value="third2">
</form>

Div with multiple text color

Please I want to know how this works just like the stackoverflow. When codes are being displayed, the text display in multiple colors just like in a text editor app.
<form action="myForm.php" id="my_form" method="post">
<input type="text" name="user_name" id="user_name" />
<input type="email" name="email" id="email" />
<input type="password" id="password" name="password" />
<input type="submit" name="submit" id="submit" />
</form>
Please I want to know how its been done. Is it an application added to the site or just coding. If it's a bulky process please I will appreciate helpful clues on how it works but if it's a short process please I need a better explanation
Here, I just screenshot this question and you can see what I mean

It's done using javascript. I recommend this one https://highlightjs.org/ in "usage" page there is a quick start guide.
Good luck.
--- UPDATE
Here is a simple example how to use it:
Assuming you already added the dependencies files such as highlighjs.min.js and a code styling css file into your page, the code bellow should work perfectly.
The code block
<pre>
<code class="html">
<form action="myForm.php" id="my_form" method="post">
<input type="text" name="user_name" id="user_name" />
<input type="email" name="email" id="email" />
<input type="password" id="password" name="password" />
<input type="submit" name="submit" id="submit" />
</form>
</code>
</pre>
Javascript to escape and highlight blocks
$(document).ready(function () {
$("pre code").each(function () {
// Escape HTML code
$(this).html($("<p/>").text($(this).html()).html());
// Apply highlighting to the block
hljs.highlightBlock(this);
});
});
The result will be a pretty highlighted code!
JSFiddle: https://jsfiddle.net/evandroprogram/5sgrmsd4/

<div class="container">
<span style="background-color:red">this span is red</span>
<span style="background-color:green">this span is green</span>
<span style="background-color:blue">this span is blue</span>
</div>
You can later set height and width properties of the div, can also make it more attractive using gradient effects.

Javascript/ Facebox getElementById not returning anything

I am opening up a small modal dialog using facebox with a form and then trying to access the value inside a text field on that form with javascript. This is the HTML code -
<div id="dialog-form95" style="display:none">
<div class="block">
<form action="" method="post" name="form95">
<h3>Setting URL</h3>
<p></p>
<p><label>URL : </label></p><input type="text" class="text" id="du95" name="url"/>
<p><input type="submit" class="submit small" value="save" onclick="updateUrl(95,109); return false;"/></p>
</form>
</div>
</div>
This is the javascript onclick -
function updateUrl(bid, cid){
alert(document.getElementById('du'+bid).value);
}
I even tried hardcoding "du95". Whenever i update anything in the textbox and submit, it shows a blank alert dialog. Nothing shows up in the js console as well.

That's because it has no value. Try and see what happens:
<input type="text" class="text" id="du95" name="url" value="testing" />

For some reason you have display: none in you container div.
After removing that it seems to work fine in jsfiddle: http://jsfiddle.net/8bSdK/

jQuery modal window removes elements from my form

jQuery, when i use it to create a modal window which contains form elemets,
it takes out those elements when i submit the form.
example of the form:
<form enctype="multipart/form-data" action="/system/article/add/" class="from" method="post">
<label for="article_title" class="required">Title:</label>
<input class="formfield" id="article_title" name="article_title" value="" type="text">
<label for="url" class="required">Url:</label>
<input class="formfield" id="url" name="url" value="" type="text">
<div id="add_photo" style="width: auto;" class="ui-dialog-content ui-widget-content" title="Add Photo">
<label for="photo_title" class="optional">Photo title:</label>
<input class="formfield" id="photo_title" name="photo_title" value="" type="text">
<label for="photot" class="optional">Photo thumb:</label>
<input type="file" name="photot" id="photot" class="formfield">
<label for="photo_checkbox" class="optional">Include lighbox?</label>
<input name="photo_checkbox" value="0" type="hidden">
<input class="checkbox" id="photo_checkbox" name="photo_checkbox" value="1" type="checkbox">
<label for="photo_big" class="optional">Photo:</label>
<input type="file" name="photo_big" id="photo_big" class="formfield">
</div>
</form>
exaple of JS:
<script>
$(document).ready(function(){
$("#add_photo").dialog({
autoOpen: false,
buttons: {
"Ok": function() {
$(this).dialog("close");
}
}
});
});
So what i nocited during the inspetion via firebug, is that jquery actually removes my form elements within #add_photo and puts them outside the form in DOM, so even tough in html the modal dialog is within my form, in DOM it isn't ....
An this is the reason why i'm having the issue!
Have anyone encountered simmilar problem?
Any solution?! Thank you very much!

I just had the same problem. I solved it by adding another
<div id="beforesubmit" style="display:none"></div>
at the end (but inside) of the form and then you have to add this to jQuery:
$("form").submit(function() {
$("#add_photo").prependTo("#beforesubmit");
});
This will make sure that before the form is submit your dialog div will be put back in between the form tags. Thanks to arnorhs I came to this solution.
Cheers!

I'm not sure what dialog box plugin you're using, but I would suspect that the dialog box plugin is pulling the DIV out of the form and placing it into the body of the page, so It can bring the box in front of the page, outside of the form element.
So to rephrase, in order for the dialog box plugin to make your dialog appear in front of all the content on your page, it needs to remove it from whatever element it is sitting in, no matter if it's a form or anything else.

The form needs to be inside the div. That's how it is in all the Dialog examples. Not sure how you're going to do that with the title and url inputs not being on the dialog. Couldn't you put them on it too?
This wouldn't have the problem:
<div id="add_photo" style="width: auto;" class="ui-dialog-content ui-widget-content" title="Add Photo">
<form enctype="multipart/form-data" action="/system/article/add/" class="from" method="post">
<label for="article_title" class="required">Title:</label>
<input class="formfield" id="article_title" name="article_title" value="" type="text">
<label for="url" class="required">Url:</label>
<input class="formfield" id="url" name="url" value="" type="text">
<label for="photo_title" class="optional">Photo title:</label>
<input class="formfield" id="photo_title" name="photo_title" value="" type="text">
<label for="photot" class="optional">Photo thumb:</label>
<input type="file" name="photot" id="photot" class="formfield">
<label for="photo_checkbox" class="optional">Include lighbox?</label>
<input name="photo_checkbox" value="0" type="hidden">
<input class="checkbox" id="photo_checkbox" name="photo_checkbox" value="1" type="checkbox">
<label for="photo_big" class="optional">Photo:</label>
<input type="file" name="photo_big" id="photo_big" class="formfield">
</form>
</div>

This article describes how to solve your problem:
You’ll see that the content we had mid-way through our page has been marked up with additional classes and, most importantly, placed at the bottom of the page immediately before the closing tag. Why is this important? Because it also means that any ASP.Net controls you place within this dialog will also appear at the bottom of the page, outside of the page’s tag. This means you won’t be able to get a handle to them on postback.
What’s the solution? Well, there are two options:
Move the elements back to the form, and manually submit when the button is clicked
Clone the elements when you create the dialog, then clone the values back, trigger click on the original button (or, if you only have one or two values to post back, simply assign the values to an ASP.Net hidden field control).

From http://blog.coreycoogan.com/2010/12/01/jquerys-dialog-and-form-problems/
Tie it to the form by doing $("mydialog").parent().appendTo($("form:first")).
Note that you have to this call after you already called $("mydialog").dialog()

As seen in the answer for this question, jQuery dialog has a field appendTo, that can be used to configure where to put your dialog (div-wise) on initialization.
This seems to be the least ninja-workaround version to tackle the problem.