To remove a property from an object (mutating the object), you can do it like this:
delete myObject.regex;
// or,
delete myObject['regex'];
// or,
var prop = "regex";
delete myObject[prop];
Demo
var myObject = {
"ircEvent": "PRIVMSG",
"method": "newURI",
"regex": "^http://.*"
};
delete myObject.regex;
console.log(myObject);
For anyone interested in reading more about it, Stack Overflow user kangax has written an incredibly in-depth blog post about the delete
statement on their blog, Understanding delete. It is highly recommended.
If you'd like a new object with all the keys of the original except some, you could use the destructuring.
Demo
let myObject = {
"ircEvent": "PRIVMSG",
"method": "newURI",
"regex": "^http://.*"
};
const {regex, ...newObj} = myObject;
console.log(newObj); // has no 'regex' key
console.log(myObject); // remains unchanged
Short & Snazzy:
+ new Date()
A unary operator like plus
triggers the valueOf
method in the Date
object and it returns the timestamp (without any alteration).
Details:
On almost all current browsers you can use Date.now()
to get the UTC timestamp in milliseconds; a notable exception to this is IE8 and earlier (see compatibility table).
You can easily make a shim for this, though:
if (!Date.now) {
Date.now = function() { return new Date().getTime(); }
}
To get the timestamp in seconds, you can use:
Math.floor(Date.now() / 1000)
Or alternatively you could use:
Date.now() / 1000 | 0
Which should be slightly faster, but also less readable.
(also see this answer or this with further explaination to bitwise operators).
I would recommend using Date.now()
(with compatibility shim). It's slightly better because it's shorter & doesn't create a new Date
object. However, if you don't want a shim & maximum compatibility, you could use the "old" method to get the timestamp in milliseconds:
new Date().getTime()
Which you can then convert to seconds like this:
Math.round(new Date().getTime()/1000)
And you can also use the valueOf
method which we showed above:
new Date().valueOf()
Timestamp in Milliseconds
var timeStampInMs = window.performance && window.performance.now && window.performance.timing && window.performance.timing.navigationStart ? window.performance.now() + window.performance.timing.navigationStart : Date.now();
console.log(timeStampInMs, Date.now());
Best Answer
I don't know if it works with google maps, but there is a web service that returns a country code and takes as parameters the lat and long.
Here is an example:
http://api.geonames.org/countryCodeJSON?lat=49.03&lng=10.2&username=demo
Returns a JSON data:
{"languages":"de","distance":"0","countryCode":"DE","countryName":"Germany"}
I also found a little description:
See the docs
Edit: Please note that
demo
is just a demonstration user and you should create a user account at http://www.geonames.org/login in order to use the service.