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how to get input value from summornote text Editor

enter image description here
//html code
//<div id="txtDescription" class="summernote datarequired" //title="Description Reuired">
// jquery code for get data
i use $('#txtDescription').val() to access value But not getting.

I think you need to $("#txtDescription").code() or $("#txtDescription").summernote('code') either of this might help you solve your problem.
please refer Here
for further info.

div elements don't have value. input elements have it.
In case of div you might use
document.getElementById("txtDescription").innerHTML
or
document.getElementById("txtDescription").innerText

Remember to use this when the page is loaded, or in an onload event.
document.querySelector('#txtDescription').innerHTML
or
document.querySelector('#txtDescription').innerText

Let a user copy the source code... of an element with jquery

I can understand basic javascript and jquery but I'm having a hard time understanding how to allow a user to see the source code of an element for example.
If I have an element on a webpage like this
`<p>Hi I'm an element</p>`
every body knows it will be displayed as this
Hi I'm an element
but I want a user to see this in its source code form
`<p>Hi I'm an element</p>`
How on earth is this done??

The basic idea is to get the HTML of an element, then show it somewhere as plain-text. We can use .html() to get the HTML and then .text() to output the same HTML as plain-text:
//on the click of a link
​$('a')​.on('click', function () {
//append a container with the plain-text HTML of an element
$('body').append($('<div />').text($('form').html()));
});​​
Here is the demo: http://jsfiddle.net/YbJfs/
Note that this does not get the actual <form> tag, but you could place the form in a container, select the container, and then use the .html() if that container and you'll have the <form> tag as well.
Also, if you want to add the HTML to a form input or text-area, you can use .val() rather than .text().
Here is a demo: http://jsfiddle.net/YbJfs/1/

You can use...
element.outerHTML;
...though it isn't technically the "source code". It's the HTML rendered by the browser, which may have some differences.
Also, you need a shim for Firefox 10 and lower.
function outerHTML(el) {
return el.outerHMTL || document.createElement('div')
.appendChild(el.cloneNode(true))
.parentNode
.innerHTML;
}

to grab the html of an element either use native javascripts innerHTML, or if you want to use jQuery use html() method. Examples ...
javascript:
var html = document.getElementById('myOb').innerHTML;
jQuery:
var html = $('#myOb').html();

JQuery .attr won't retrieve or change values

I'm trying to change HTML attributes using jQuery, but no matter what I do, I can't get anything to work with jQuery's .attr().
For testing, I've written
alert($("#logo").attr("title"));
and even though I have an img with id="logo" and a title, the alert remains blank.
My full method:
function switchVideo(videoID) {
var videoPlayer = document.getElementById("example_video_1");
videoPlayer.src = "video/Occam.webm";
videoPlayer.load();
$("#example_video_1").attr("poster", "video/ss.png");
//Doesn't work:
alert($("#logo").attr("title"));
$("#logo").fadeOut();
videoPlayer.play();
}
My fade out works, so I know I imported jQuery correctly.
I've gotten it working in another document, so there must be something else in the document messing it up. Does anyone know why this simple method won't work?
You can see the source page at http://jrstrauss.net/temp/create.html

Your div has the id logo, not the img.
Try:
$("#logo img").attr("title")

You should be using $.fn.prop for that now: http://api.jquery.com/prop/

You should use prop if you are using a recent version of jQuery.

You can also try this according to your HTML:
alert( $("#logo a img").attr("title") );
Demo

You have the following markup with id logo
<div id="logo">
......
</div>
Now, you are trying to run jQuery's .attr method by following code.
$("#logo").attr("title");
as you may know .attr method retrieves attribute value of the given element but that <div> doesn't have a attribute named title. so to confirm this, try retrieving attribute that does exist, for example id. so try this
alert($("#logo").attr("id"));
This will return the value of attribute. the important thing to note is jQuery looks for attributes of given element only, It doesn't scan child elements.
So, to make it work in your case. You need to do the following
alert($("#logo img").attr("title"));
Hope it helps

setting content between div tags using javascript

I'm trying to set some content in between some div tags on a JSP page using javascript.
currently the div tag on the JSP page looks like this:
<div id="successAndErrorMessages"></div>
I want to fill the content in those div tags using some javascript method so that it will look like so:
<div id="successAndErrorMessages"><div class="portlet-msg-error">This is an error message</div></div>
I know you can go like this:
document.getElementById("successAndErrorMessages").value="someContent";
But that just changes the value of the 'value' attribute. It doesn't fill in content between those div tags. Anyone out there that can point me in the right direction?

Try the following:
document.getElementById("successAndErrorMessages").innerHTML="someContent";
msdn link for detail : innerHTML Property

See Creating and modifying HTML at what used to be called the Web Standards Curriculum.
Use the createElement, createTextNode and appendChild methods.

If the number of your messages is limited then the following may help. I used jQuery for the following example, but it works with plain js too.
The innerHtml property did not work for me. So I experimented with ...
<div id=successAndErrorMessages-1>100% OK</div>
<div id=successAndErrorMessages-2>This is an error mssg!</div>
and toggled one of the two on/off ...
$("#successAndErrorMessages-1").css('display', 'none')
$("#successAndErrorMessages-2").css('display', '')
For some reason I had to fiddle around with the ordering before it worked in all types of browsers.

How to add an HTML attribute with jQuery

Well, I have this jQuery image slideshow that uses the attribute "control" inside an <a>. Seeing how it didn't validate I searched for a way to add this attribute inside my HMTL via jQuery but I didn't really find anything relevant. Now I don't really care about how valid my page is, but I'm really curious in how to add an HTML attribute inside an HTML tag.
In case I wasn't clear enough with my explanation, I have this code:
<a id="previous" control="-6" href="#"></a>
And I want to add control="-6" with jQuery.

Use jQuery's attr function
$("#previous").attr("control", "-6");
An example
// Try to retrieve the control attribute
// returns undefined because the attribute doesn't exists
$("#previous").attr("control");
// Set the control attribute
$("#previous").attr("control", "-6");
// Retrieve the control attribute (-6)
$("#previous").attr("control");
See this example on jsFiddle
You can alternatively use data function to store values on elements. Works the same way, for example:
$("#previous").data("control"); // undefined
$("#previous").data("control", "-6"); // set the element data
$("#previous").data("control"); // retrieve -6
Using data you can store more complex values like objects
$("#previos").data("control", { value: -6 });
($("#previos").data("control")).value; // -6
See a data example on jsFiddle

Since the jQuery version has been well covered here, I thought I'd offer something different, so here a native DOM API alternative:
document.getElementById('previous').setAttribute('control','-6');
Yes, I know you asked for jQuery. Never hurts to know the native way too. :o)

Let me see if I understood you.
You have, for example, the code:
<a id="previous" href="#"></a>
And by jQuery you want it to be:
<a id="previous" control="-6" href="#"></a>
Is it right?
If it is. You just have to do:
$('#previous').attr('control', -6);
If an attribute doesn't exists it's created by jQuery.
So, to remove it you can do:
$('#previous').removeAttr('control');
What you're doing doesn't respect the html rules and everything else, but it works fine, a lot of plugins do the same. ;D
I hope this could be helpful!
See you!

Try this:
$('#previous').attr('control', '-6');
Why? the $.attr(); function of jQuery allows you to add, get or update attributes (class, id, href, link, src, control and everything else!).

$("#previous").attr("control", "-6");

HTML:
<a id="previous" href="#">...</a>
jQuery:
$('#previous').attr('control', '-6');

jQuery's attr will do that. Example:
$("#previous").attr("control", "-6");
Also check out this example at http://jsfiddle.net/grfSN/.