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How do I replace a character at a particular index in JavaScript?
...replacement.length);
}
And use it like this:
var hello = "Hello World";
alert(hello.replaceAt(2, "!!")); // Should display He!!o World
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follo...
How can I detect if a browser is blocking a popup?
...
try {
popup_window.focus();
} catch (e) {
alert("Pop-up Blocker is enabled! Please add this site to your exception list.");
}
}
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Handling an empty UITableView. Print a friendly message
...
func emptyDataSetDidTapButton(scrollView: UIScrollView!) {
let ac = UIAlertController(title: "Button tapped!", message: nil, preferredStyle: .Alert)
ac.addAction(UIAlertAction(title: "Hurray", style: .Default, handler: nil))
presentViewController(ac, animated: true, completion: nil)
}
...
Detect rotation of Android phone in the browser with JavaScript
...e" : "resize";
window.addEventListener(orientationEvent, function() {
alert('HOLY ROTATING SCREENS BATMAN:' + window.orientation + " " + screen.width);
}, false);
Check the window.orientation property to figure out which way the device is oriented. With Android phones, screen.width or screen....
Repeat String - Javascript
...
This problem is a well-known / "classic" optimization issue for JavaScript, caused by the fact that JavaScript strings are "immutable" and addition by concatenation of even a single character to a string requires creation of, including memory allocation for and copying to, an entire new strin...
JQuery - find a radio button by value
...he HTML:
<fieldset>
<input type="radio" name="UI_opt" value="alerter" checked> Alerter<br/>
<input type="radio" name="UI_opt" value="printer"> Printer<br/>
<input type="radio" name="UI_opt" value="consoler"> Consoler<br/>
</fieldset>
the...
Switch statement for greater-than/less-than
... scrollleft = 1000;
switch (true)
{
case (scrollleft > 1000):
alert('gt');
break;
case (scrollleft <= 1000):
alert('lt');
break;
}
Demo: http://jsfiddle.net/UWYzr/
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How can I use NSError in my iPhone App?
... show a user friendly error message based on an error code. An example:
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Error"
message:FS_ERROR_LOCALIZED_DESCRIPTION(error.code)
delegate:nil
cancelButtonTitle:@"OK"
otherButtonTitles:nil]...
How do I check if an object has a specific property in JavaScript?
...ty] !== undefined;
};
x = {'key': 1};
if (x.hasOwnProperty('key')) {
alert('have key!');
}
if (!x.hasOwnProperty('bar')) {
alert('no bar!');
}
A safer, but slower solution, as pointed out by Konrad Rudolph and Armin Ronacher would be:
Object.prototype.hasOwnProperty = function(property...
TypeScript function overloading
...myMethod(a: number, b: string);
myMethod(a: any, b?: string) {
alert(a.toString());
}
}
Only the three overloads are recognized by TypeScript as possible signatures for a method call, not the actual implementation.
In your case, I would personally use two methods with different n...