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What is the explanation for these bizarre JavaScript behaviours mentioned in the 'Wat' talk for Code
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{} + []
The {} here is not parsed as an object, but instead as an empty block (§12.1, at least as long as you're not forcing that statement to be an expression, but more about that later). The return value of empty blocks is empty, so the result of that statement is the same as +[]. The unary + ...
Why and when to use Node.js? [duplicate]
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It's evented asynchronous non-blocking I/O build ontop of V8.
So we have all the performance gain of V8 which is the Google JavaScript interpreter. Since the JavaScript performance race hasn't ended yet, you can expect Google to constantly update perform...
How do I sort an NSMutableArray with custom objects in it?
...comparator-methods is possible as well. Have a look at the documentation.
Blocks (shiny!)
There's also the possibility of sorting with a block since Mac OS X 10.6 and iOS 4:
NSArray *sortedArray;
sortedArray = [drinkDetails sortedArrayUsingComparator:^NSComparisonResult(id a, id b) {
NSDate *...
Read binary file as string in Ruby
... This should be done in begin {..open..} ensure {..close..} end blocks
– shadowbq
Aug 4 '15 at 20:25
3
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ie8 var w= window.open() - “Message: Invalid argument.”
...ng the following code its working...
onclick="window.open('privacy_policy.php','','width=1200,height=800,scrollbars=yes');
Previously i Entered like
onclick="window.open('privacy_policy.php','Window title','width=1200,height=800,scrollbars=yes');
Means Microsoft does not allow you to enter win...
onclick open window and specific size
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<a href="/index2.php?option=com_jumi&amp;fileid=3&amp;Itemid=11"
onclick="window.open(this.href,'targetWindow',
`toolbar=no,
location=no,
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What is correct HTTP status code when redirecting to a login page?
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@PHP_Jedi true. 303 may be more appropriate from that point of view. However, 302 is more reliable in terms of client compatibility.
– Pekka
May 15 '10 at 9:44
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Does return stop a loop?
...is one), return will exit immediately. However, if the return is in a try block with an accompanying finally block, the finally always executes and can "override" the return in the try.
function foo() {
try {
for (var i = 0; i < 10; i++) {
if (i % 3 == 0) {
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Should I use encodeURI or encodeURIComponent for encoding URLs?
... If i am using ajax how do i decode the url which is passed to php?
– Aditya Shukla
Dec 27 '10 at 18:19
6
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ScrollIntoView() causing the whole page to move
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Fixed it with:
element.scrollIntoView({ behavior: 'smooth', block: 'nearest', inline: 'start' })
see: https://developer.mozilla.org/en-US/docs/Web/API/Element/scrollIntoView
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