大约有 47,000 项符合查询结果（耗时：0.0800秒） [XML]
String length in bytes in JavaScript
...ing, you can do,
function lengthInUtf8Bytes(str) {
// Matches only the 10.. bytes that are non-initial characters in a multi-byte sequence.
var m = encodeURIComponent(str).match(/%[89ABab]/g);
return str.length + (m ? m.length : 0);
}
This should work because of the way UTF-8 encodes multi-...
Get selected element's outer HTML
...
2014 Edit : The question and this reply are from 2010. At the time, no better solution was widely available. Now, many of the other replies are better : Eric Hu's, or Re Capcha's for example.
This site seems to have a solutio...
Node.js vs .Net performance
...FAST at serving one request per second might totally croak if you send it 500 requests per second (under LOAD).
You also have to consider static (and cached) vs dynamic pages. If you're worried about static pages, then IIS is probably going to beat node because IIS uses kernel-mode caching, which ...
Handling optional parameters in javascript
...y:
function getData (/*id, parameters, callback*/) {
var id = arguments[0], parameters, callback;
if (arguments.length == 2) { // only two arguments supplied
if (Object.prototype.toString.call(arguments[1]) == "[object Function]") {
callback = arguments[1]; // if is a function, set a...
Scatterplot with too many points
I am trying to plot two variables where N=700K. The problem is that there is too much overlap, so that the plot becomes mostly a solid block of black. Is there any way of having a grayscale "cloud" where the darkness of the plot is a function of the number of points in an region? In other words, ins...
Get image data url in JavaScript?
...
401
Note: This only works if the image is from the same domain as the page, or has the crossOrigin=...
socket.error: [Errno 48] Address already in use
...
10 Answers
10
Active
...
“unrecognized import path” with go get
...
102
The issues are relating to an invalid GOROOT.
I think you installed Go in /usr/local/go.
So ch...
Powershell equivalent of bash ampersand (&) for forking/running background processes
...f the job as parameter.
NOTE: Regarding your initial example, "bg sleep 30" would not work because sleep is a Powershell commandlet. Start-Process only works when you actually fork a process.
share
|
...
Oracle “Partition By” Keyword
...turn every record in the emp table.)
emp_no dept_no DEPT_COUNT
1 10 3
2 10 3
3 10 3 <- three because there are three "dept_no = 10" records
4 20 2
5 20 2 <- two because there are two "dept_no = 20" records
If there was another co...