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Best way to detect that HTML5 is not supported
...
try {
document.createElement("canvas").getContext("2d");
alert("HTML5 Canvas is supported in your browser.");
} catch (e) {
alert("HTML5 Canvas is not supported in your browser.");
}
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Chrome desktop notification example [closed]
...ddEventListener('DOMContentLoaded', function() {
if (!Notification) {
alert('Desktop notifications not available in your browser. Try Chromium.');
return;
}
if (Notification.permission !== 'granted')
Notification.requestPermission();
});
function notifyMe() {
if (Notificatio...
Set value of hidden field in a form using jQuery's “.val()” doesn't work
...". I've revised the example to include the code you pasted above, with an alert to confirm the value change: jsbin.com/elovo/2/edit
– Andy E
Jun 5 '10 at 10:18
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Biggest advantage to using ASP.Net MVC vs web forms
...rns(SoC).
Enables Test Driven Development (TDD).
Easy integration with JavaScript frameworks.
Following the design of stateless nature of the web.
RESTful urls that enables SEO.
No ViewState and PostBack events
The main advantage of ASP.net Web Form are:
It provides RAD development
Easy develo...
Check existence of directory and create if doesn't exist
I often find myself writing R scripts that generate a lot of output. I find it cleaner to put this output into it's own directory(s). What I've written below will check for the existence of a directory and move into it, or create the directory and then move into it. Is there a better way to approach...
Differences between .NET 4.0 and .NET 4.5 in High level in .NET
... many platforms and languages, including .NET Framework, C++ and HTML5/JavaScript.
2. Core Features
Ability to limit how long the regular expression engine will attempt
to resolve a regular expression before it times out.
Ability to define the culture for an application domain.
Console support f...
Why does !{}[true] evaluate to true in JavaScript?
...ted as false:
http://jsfiddle.net/67GEu/
'use strict';
var b = {}[true];
alert(b); // undefined
b = !{}[true];
alert(b); // true
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Difference between `npm start` & `node app.js`, when starting app?
...
From the man page, npm start:
runs a package's "start" script, if one was provided.
If no version is specified, then it starts the "active" version.
Admittedly, that description is completely unhelpful, and that's all it says. At least it's more documented than socket.io.
An...
Perform debounce in React.js
....
Without persist (default behavior: pooled event)
onClick = e => {
alert(`sync -> hasNativeEvent=${!!e.nativeEvent}`);
setTimeout(() => {
alert(`async -> hasNativeEvent=${!!e.nativeEvent}`);
}, 0);
};
The 2nd (async) will print hasNativeEvent=false because the event proper...
What are the typical reasons Javascript developed on Firefox fails on IE? [closed]
I developed some javascript enhanced pages that run fine on recent Firefox and Safari. I missed to check in Internet Explorer, and now I find the pages don't work on IE 6 and 7 (so far). The scripts are somehow not executed, the pages show as if javascript wasn't there, although some javascript is e...