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What is the difference between id and class in CSS, and when should I use them? [duplicate]
... type of input format)
Examples of class names are: tag, comment, toolbar-button, warning-message, or email.
Use the ID when you have a single element on the page that will take the style. Remember that IDs must be unique. In your case this may be the correct option, as there presumably will only b...
Understanding NSRunLoop
...this in any app simply enough. Install a handler for any IO action (e.g., button press) that sleeps. You will block the main run loop (and the whole UI) until that method completes.
The same applies to any run loop.
I suggest you read the following documentation on run loops:
https://developer....
AngularJS ng-class if-else expression
...d after that you can develop your custom logic:
//In .ts
public showUploadButton:boolean = false;
if(some logic)
{
//your logic
showUploadButton = true;
}
//In template
<button [class]="showUploadButton ? 'btn btn-default': 'btn btn-info'">Upload</button>
...
How can I make a .NET Windows Forms application that only runs in the System Tray?
... {
var eventArgs = e as MouseEventArgs;
switch (eventArgs.Button)
{
// Left click to reactivate
case MouseButtons.Left:
// Do your stuff
break;
}
}
...
How to send FormData objects with Ajax-requests in jQuery? [duplicate]
...20" />
<br /><br />
<input type="button" id="upload" value="upload" />
</form>
</div>
<script>
$(document).ready(function(){
$('#upload').click(function(){
console.log('upload bu...
Multiple Parameters for jQuery selector?
I was just looking at the jQueryUI button plug-in and noticed this
1 Answer
1
...
How to save an HTML5 Canvas as an image on a server?
... a POST method.
2) When the user is done drawing, he can click the "Save" button.
3) When the button is clicked I take the image data and put it into a hidden field. After that I submit the form.
document.getElementById('my_hidden').value = canvas.toDataURL('image/png');
document.forms["form1"].s...
How to make input type= file Should accept only pdf and xls
...t the file upload control to Limit the types of files user can upload on a button click then this is the way..
<script type="text/JavaScript">
<!-- Begin
function TestFileType( fileName, fileTypes ) {
if (!fileName) return;
dots = fileName.split(".")
//get the part AFTER the LAST period.
...
How to disable scrolling temporarily?
... do it by canceling these interaction events:
Mouse & Touch scroll and Buttons associated with scrolling.
[Working demo]
// left: 37, up: 38, right: 39, down: 40,
// spacebar: 32, pageup: 33, pagedown: 34, end: 35, home: 36
var keys = {37: 1, 38: 1, 39: 1, 40: 1};
function preventDefault(e) {...
How can I change my default database in SQL Server without using MS SQL Server Management Studio?
...ault. I can connect to SQL Server Management Studio by using the 'options' button in the connection dialog and selecting 'master' as the database to connect to. However, whenever I try to do anything in object explorer, it tries to connect using my default database and fails.
...