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I want a javascript function to make readonly false for a textbox in a dynamic table of ascx

I want to add an JavaScript function through which I can make my Text Box field editable instead of it being Read Only.
Also the table is a dynamic table in which I have my Text Box.
Please help me.
Code:
cell.Controls.Add(New clsHtmlInputCurr(cCTRNAMEPREFIX_ASSET_UNITPRICE, objAsset.UnitPrice, Not
IsEditable(enuActEditMode.eNew, enuActEditMode.eEdit_Proc1, enuActEditMode.eEdit_Proc1_ext), "startEdit(this)", "calcAssets(this)", 15, 100, enuHtmlCtrLabel.No, intAssNo, CI).Ctrl)

Is the textbox an asp component? If so, there's a chance that changes to values will be ignored when the page refreshes, as asp may choose to ignore the incoming value of a read only control.
Are you trying to avoid a page load? You could wrap the textbox in an UpdatePanel, then it can still be 'under asp control' while being able to change without a whole page load.

custom css error class not applying for the fields jquery validator

I have a form which contains two file input and two check box and one submit button. With my current code when the user click submit button the jquery validation will work perfectly but the problem was the custom error class was not applying and not removing correctly for example if the user click the check box that particular errorClassshould be removed this was not happening. When i search through SO I got one use full information it was mentioned instead of using border red for the check box or if the upload any file that particular field errRed class should remove and I try using outline-color but this was also not working. It might be simple somewhere I am missing some bit of code
I tried giving $('.chk_requ').removeClass('errRed_chkb'); still no use
Here is the fiddle link
kindly please help me.
Thanks in Advnace

Instead of remove class you can add empty div with id="diverr" there and give it desplay:none;
$("#diverr").text("Please select Gender");
$("#diverr").css("display","list-item");
if condition is false then
$("#diverr").css("display","none");

Sitecore - Field not detected as modified. How to force the save prompt to show?

We are using the Taxonomy module for Sitecore: https://marketplace.sitecore.net/Modules/T/Taxonomy.aspx?sc_lang=en
The module works fine 90% of the time. The only catch is that when in a taxonomy field you select a value from the auto-complete options, the field doesn't seem to be marked as changed. This creates the occasional confusion with editors as when they publish the "Do you want to save?" prompt doesn't show and the content is published without tags.
If instead of selecting from the auto-complete we use the dialog box, everything works fine.
I looked at the markup, JavaScript and C# code and couldn't find a solution.
I even tried to set Sitecore.Context.ClientPage.Modified = true but it doesn't seem to do anything.
How can I force the save prompt to show?

I had a similar issue, I was updating a field using js and the experience editor wasnt detecting the change.
I got this working by doing the following using js:-
There is a save button state object saved in a view state field. You can grab by doing window.parent.document.getElementById("__SAVEBUTTONSTATE"). I then did the following:-
var saveButtonState = window.parent.document.getElementById("__SAVEBUTTONSTATE");
saveButtonState.value = 1;
saveButtonState.onchange();
This will make the save button enabled
In the experience editor, Sitecore wraps your sitecore item fields in an span element, which contain a unique id. (These are the fields you interact with in the experience editor). However, its not these values which Sitecore receives when you hit Save button. Sitecore actually stores values of your item fields in hidden inputs, so when you interact with the span element, in the background, these hidden inputs are being updated. So in order for Sitecore to receive your changes, you must update the corresponding hidden input. If you open Inspect element in the experience editor and search "scFieldValues", you will see these hidden inputs. I updated the field by using jquery:-
$('#scFieldValues').children('input').each(function () {
if (id.indexOf($(this).attr('id')) >= 0) {
$(this).val(value);
}
});
The id object is the id of the span element. The contents of that id is used in the id of the hidden input. This is why I use "id.IndexOf" to find correct input element. So when I update the span element value, I grab that value and update the corresponding input.
Hope this helps

Asp.Net TextBox (Javascript/jQuery)

On my website I am having a text-box and I want to give it this type of functionality:
http://kyleschaeffer.com/best-practices/input-prompt-text/
On the above website javascript code is given but how can I actually combine it with my asp.net text-box server control. Also the initial text which I want to assign it will be coming from code behind.

You just need to set the title on your textbox like this:
myTextBox.Attributes["Title"] = "The Watermark Goes Here!";

Cannot get Javascript function to fire from a textbox in a gridview

I have a textbox in the ItemTemplate of a Gridview. On the _RowDataBound event I add an attribute to the textbox like so:
TextBox txtQuantity = (TextBox)e.Row.FindControl("txtQuantity");
txtQuantity.Attributes.Add("onkeypress", "CheckInputForNumeric(event)");
And it simply will not fire a JS function.
I've tried doing onClick, onBlur, onKeyPress... even tried changing the case to: onclick, onblur, onkeypress... nothing seems to be able to fire my JS function.
elsewhere on that same page I have:
txtAddMarkup.Attributes.Add("onkeypress", "CheckInputForNumeric(event)");
(that textbox is not in a gridview)
and this works just fine.
I'm totally stuck and frustrated at this point because it seems no matter what I do, I cannot get this textbox to fire a JavaScript function

Please run your project and look at the name of the textbox generated by viewing the source in the broswer (IE, Firefox, Safari, whatever). You'll likely see that the name of the textbox has changed. Thanks, ASP.
You can't use the DOM to access the elements by name because they're renamed for you.

For some reason, deleting temporary internet files and reloading the page wasn't getting the newest .js. I had to unload the project and re-build it. Which is weird because I've never had to do that before for other controls
thanks for your inputs!

try this one:
TextBox txtQuantity = (TextBox)e.Row.FindControl("txtQuantity");
txtQuantity.Attributes.Add("onkeypress", "CheckInputForNumeric(event)");
txtQuantity.Attributes["onkeypress"] =
string.Format("javascript:CheckInputForNumeric(this,'{0}','{1}','{2}');", argument1, argument2, argument3);
Or Simply
txtQuantity.Attributes["onkeypress"] =
string.Format("javascript:CheckInputForNumeric (this);");