大约有 19,000 项符合查询结果（耗时：0.0344秒） [XML]
doGet and doPost in Servlets
I've developed an HTML page that sends information to a Servlet. In the Servlet, I am using the methods doGet() and doPost() :
...
How to do something before on submit? [closed]
i have a form which has a button that submits the form. I need to do something before submits happen. I tried doing onClick on that button but it happens after the submit.
...
Two submit buttons in one form
I have two submit buttons in a form. How do I determine which one was hit serverside?
19 Answers
...
What's an elegant way to conditionally add a class to an HTML element in a view?
...ur variable:
<div class="<%= 'ok' if @success %>">
A second form using the ternary ?: operator is useful if you want to choose between two classes:
<div class="<%= @success ? 'good' : 'bad' %>">
Finally, you can use Rail's record tag helpers such as div_for, which will ...
How do I get the current time only in JavaScript
...browser support to simply use: toLocaleTimeString
For html5 type time the format must be hh:mm.
function timeNow(i) {
i.value = new Date().toLocaleTimeString([], {hour: '2-digit', minute:'2-digit'});
}
<a onclick="timeNow(test1)" href="#">SET TIME</a>
<input id="test1" typ...
Original purpose of ? [closed]
...ds should not be rendered and provide a means for servers to store state information with a form. This will be passed back to the server when the form is submitted, using the name/value pair defined by the corresponding attributes. This is a work around for the statelessness of HTTP. Another approac...
Can you require two form fields to match with HTML5?
Is there a way to require the entries in two form fields to match using HTML5? Or does this still have to be done with javascript? For example, if you have two password fields and want to make sure that a user has entered the same data in each field, are there some attributes, or other coding that c...
Stop an input field in a form from being submitted
...ript (a greasemonkey/userscript) that will insert some input fields into a form on a website.
12 Answers
...
Swift: Testing optionals for nil
... // Do something using `xyz`.
}
This produces an error:
does not conform to protocol 'BooleanType.Protocol'
You have to use one of these forms:
if xyz != nil {
// Do something using `xyz`.
}
if let xy = xyz {
// Do something using `xy`.
}
...
form_for with nested resources
I have a two-part question about form_for and nested resources. Let's say I'm writing a blog engine and I want to relate a comment to an article. I've defined a nested resource as follows:
...