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If isset $_POST
I have a form on one page that submits to another page. There, it checks if the input mail is filled. If so then do something and if it is not filled, do something else. I don't understand why it always says that it is set, even if I send an empty form. What is missing or wrong?
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vs. . Which to use?
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<button /> also has a form attribute (and related attributes) so it can be linked to forms in other parts of the document body.
– Gup3rSuR4c
Oct 7 '14 at 23:29
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Make page to tell browser not to cache/preserve input values
Most browsers cache form input values. So when the user refreshes a page, the inputs have the same values.
5 Answers
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How do I create multiple submit buttons for the same form in Rails?
...eate multiple submit buttons and provide a different value to each:
<% form_for(something) do |f| %>
..
<%= f.submit 'A' %>
<%= f.submit 'B' %>
..
<% end %>
This will output:
<input type="submit" value="A" id=".." name="commit" />
<input type="sub...
What is the difference between “Form Controls” and “ActiveX Control” in Excel 2010?
...010, I noticed two kind of controls that can be inserted into a document: Form Controls and ActiveX Controls .
4 Answer...
Cross-thread operation not valid: Control accessed from a thread other than the thread it was create
I have a scenario. (Windows Forms, C#, .NET)
22 Answers
22
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What is the _snowman param in Ruby on Rails 3 forms for?
In Ruby on Rails 3 (currently using Beta 4), I see that when using the form_tag or form_for helpers there is a hidden field named _snowman with the value of ☃ ( Unicode \x9731) showing up.
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How to use PrimeFaces p:fileUpload? Listener method is never invoked or UploadedFile is null / throw
...nts apply to all PrimeFaces versions:
The enctype attribute of the <h:form> needs to be set to multipart/form-data. When this is absent, the ajax upload may just work, but the general browser behavior is unspecified and dependent on form composition and webbrowser make/version. Just always s...
Prevent any form of page refresh using jQuery/Javascript
.... Countless sites on the internet prevent a browser refresh if you have a form that is dirty, alerting you to the fact that you may lose your changes. Not sure why this is "breaking fundamental browser features".
– Siraris
Mar 31 '18 at 3:45
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How do I send a cross-domain POST request via JavaScript?
...ntire browser, so pick a name that no other website will use.)
Construct a form with hidden inputs, targeting the iframe.
Submit the form.
Here's sample code; I tested it on IE6, IE7, IE8, IE9, FF4, GC11, S5.
function crossDomainPost() {
// Add the iframe with a unique name
var iframe = docum...