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QLabel: set color of text and background
...based on a parameter passed by a caller.
enum {msg_info, msg_notify, msg_alert};
:
:
void bits::sendMessage(QString& line, int level)
{
QTextCursor cursor = ui->messages->textCursor();
QString alertHtml = "<font color=\"DeepPink\">";
QString notifyHtml = "<font colo...
Run JavaScript when an element loses focus
...ut onblur event :
<input type="text" name="name" value="value" onblur="alert(1);"/>
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How do I install pip on macOS or OS X?
...Got error #notsoeasy Download error on pypi.python.org/simple: [SSL: TLSV1_ALERT_PROTOCOL_VERSION] tlsv1 alert protocol version (_ssl.c:590) -- Some packages may not be found! No local packages or download links found for pip error: Could not find suitable distribution for Requirement.parse('pip')
...
How can I convert a string to boolean in JavaScript?
... do:
String.prototype.bool = function() {
return strToBool(this);
};
alert("true".bool());
For those (see the comments) that would like to extend the String object to get this but are worried about enumerability and are worried about clashing with other code that extends the String object:
...
How do I get the width and height of a HTML5 canvas?
...nt.getElementById( 'yourCanvasID' );
var ctx = canvas.getContext( '2d' );
alert( canvas.width );
alert( canvas.height );
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Long Press in JavaScript?
...emove("longpress");
if (longpress) {
return false;
}
alert("press");
};
var start = function(e) {
console.log(e);
if (e.type === "click" && e.button !== 0) {
return;
}
longpress = false;
this.classList.add("longpress");
if (presstime...
Best way to detect when a user leaves a web page?
...lientY < 0)) {
//window.localStorage.clear();
//alert("Y coords: " + window.event.clientY)
}
};
In my example, I am clearing local storage and alerting the user with the mouses y coords, only when the browser is closed, this will be ignored on all page loads from...
How to prevent buttons from submitting forms
...bmit and handling the event server-side - this is known as unobtrusive JavaScript.
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Return multiple values in JavaScript?
...s: dCodes,
dCodes2: dCodes2
};
}
var result = newCodes();
alert(result.dCodes);
alert(result.dCodes2);
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How can javascript upload a blob?
... actually don't have to use FormData to send a Blob to the server from JavaScript (and a File is also a Blob).
jQuery example:
var file = $('#fileInput').get(0).files.item(0); // instance of File
$.ajax({
type: 'POST',
url: 'upload.php',
data: file,
contentType: 'application/my-binary-typ...