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How do I make a textbox that only accepts numbers?
I have a windows forms app with a textbox control that I want to only accept integer values. In the past I've done this kind of validation by overloading the KeyPress event and just removing characters which didn't fit the specification. I've looked at the MaskedTextBox control but I'd like a more g...
Runtime vs. Compile time
...he program need not satisfy any invariants. In fact, it needn't be a well-formed program at all. You could feed this HTML to the compiler and watch it barf...
What can go wrong at compile time:
Syntax errors
Typechecking errors
(Rarely) compiler crashes
If the compiler succeeds, what do we know...
Rails new vs create
...eated differently.
An HTTP GET to /resources/new is intended to render a form suitable for creating a new resource, which it does by calling the new action within the controller, which creates a new unsaved record and renders the form.
An HTTP POST to /resources takes the record created as part o...
multi-step registration process issues in asp.net mvc (split viewmodels, single model)
...initialize the Step1 property. Then inside the view you would generate the form allowing the user to fill the properties about step 1. When the form is submitted the controller action will apply the validation rules for step 1 only:
[HttpPost]
public ActionResult Step1(Step1ViewModel step1)
{
v...
#import using angle brackets < > and quote marks “ ”
...
Objective-C has this in common with C/C++; the quoted form is for "local" includes of files (you need to specify the relative path from the current file, e.g. #include "headers/my_header.h"), while the angle-bracket form is for "global" includes -- those found somewhere on the i...
Detecting Browser Autofill
...ange event.
Safari 5 and Chrome 9 do dispatch the change event.
For other form fields:
IE 7 and IE 8 don't dispatch the change event.
Firefox 4 does dispatch the change change event when users select a value from a list of suggestions and tab out of the field.
Chrome 9 does not dispatch the chang...
AngularJS does not send hidden field value
For a specific use case I have to submit a single form the "old way". Means, I use a form with action="". The response is streamed, so I am not reloading the page. I am completely aware that a typical AngularJS app would not submit a form that way, but so far I have no other choice.
...
What is the best way to remove accents (normalize) in a Python unicode string?
...
Seems to work well with Chinese, but the transformation of the French name "François" unfortunately gives "FranASSois", which is not very good, compared to the more natural "Francois".
– Eric O Lebigot
Sep 17 '11 at 14:56
...
Response.Redirect to new window
...o add the following to your server side link/button:
OnClientClick="aspnetForm.target ='_blank';"
My entire button code looks something like:
<asp:LinkButton ID="myButton" runat="server" Text="Click Me!"
OnClick="myButton_Click"
OnClientClick="aspnetForm.targ...
Can I apply the required attribute to fields in HTML5?
...ied, the user
will be required to select a value
before submitting the form.
If a select element
has a required attribute specified,
does not have a multiple attribute specified,
and has a display size of 1 (do not have SIZE=2 or more - omit it if not needed);
and if ...