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JavaScript get clipboard data on paste event (Cross browser)
How can a web application detect a paste event and retrieve the data to be pasted?
20 Answers
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How do short URLs services work?
...amark work?
Do they simply associate the tiny URL key with a [virtual?] web page which merely provide an "HTTP redirect" to the original URL? or is there more "magic" to it ?
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Do asynchronous operations in ASP.NET MVC use a thread from ThreadPool on .NET 4
...w do they work?
Suppose that we want to download the contents of a remote web page using the WebClient.DownloadStringAsync method. You call this method which will register an IOCP within the operating system and return immediately. During the processing of the entire request, no threads are consume...
TypeScript type signatures for functions with variable argument counts
...aders = new HttpHeaders();
headers.append('Content-Type', 'application/json')
if (additionalHeaders && additionalHeaders.length)
for (var header of additionalHeaders)
headers.append(header.name, header.value);
return headers;
}
Then you can call it:
heade...
How to prevent Node.js from exiting while waiting for a callback?
... to stdout so that the calling process could get it
process.stdout.write(JSON.stringify(myResult));
});
Node will then wait until the event handler finishes running.
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JavaScript: How to find out if the user browser is Chrome?
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console.log(JSON.stringify({
isAndroid: /Android/.test(navigator.userAgent),
isCordova: !!window.cordova,
isEdge: /Edge/.test(navigator.userAgent),
isFirefox: /Firefox/.test(navigator.userAgent),
isChrome: /Google Inc/.tes...
Repeatedly run a shell command until it fails?
...e
The HTTP request in this case always returns 200 but also returns some JSON which has an attribute "HasErrors":true when there is an error.
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Find the closest ancestor element that has a specific class
...atch selectors, not just classes
https://developer.mozilla.org/en-US/docs/Web/API/Element.closest
For legacy browsers that do not support closest() but have matches() one can build selector-matching similar to @rvighne's class matching:
function findAncestor (el, sel) {
while ((el = el.pare...
Reading an image file into bitmap from sdcard, why am I getting a NullPointerException?
...de to convert an image from sdcard to a Base64 encoded string to send as a JSON object.And it works great:
String filepath = "/sdcard/temp.png";
File imagefile = new File(filepath);
FileInputStream fis = null;
try {
fis = new FileInputStream(imagefile);
} catch (FileNotFoundException e) {
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What's Pros and Cons: putting javascript in head and putting just before the body close
Most of javascript and web development books/articles says that you must put CSS in the head tag and javascript at the bottom of the page.
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