大约有 6,200 项符合查询结果（耗时：0.0209秒） [XML]
Drawing an image from a data URL to a canvas
...
Given a data URL, you can create an image (either on the page or purely in JS) by setting the src of the image to your data URL. For example:
var img = new Image;
img.src = strDataURI;
The drawImage() method of HTML5 Canvas Context let...
node.js, socket.io with SSL
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Use a secure URL for your initial connection, i.e. instead of "http://" use "https://". If the WebSocket transport is chosen, then Socket.IO should automatically use "wss://" (SSL) for the WebSocket connection too.
Update:
You can also ...
How to differ sessions in browser-tabs?
...ite that made me login for each new tab, since I use tabs very intensively
URL rewriting. Any URL on the site has a session ID appended to it. This is more work (you have to do something everywhere you have a site-internal link), but makes it possible to have separate sessions in different tabs, tho...
Set cURL to use local virtual hosts
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Actually, curl has an option explicitly for this: --resolve
Instead of curl -H 'Host: yada.com' http://127.0.0.1/something
use curl --resolve 'yada.com:80:127.0.0.1' http://yada.com/something
What's the difference, you ask?
Among ot...
What's the difference between passing by reference vs. passing by value?
...sed to say:
Say I want to share a web page with you. If I tell you the URL, I'm
passing by reference. You can use that URL to see the same web page I
can see. If that page is changed, we both see the changes. If you
delete the URL, all you're doing is destroying your reference to that
pa...
Ways to circumvent the same-origin policy
...nRequest object to cover all browsers:
function createCORSRequest(method, url){
var xhr = new XMLHttpRequest();
if ("withCredentials" in xhr){
xhr.open(method, url, true);
} else if (typeof XDomainRequest != "undefined"){
xhr = new XDomainRequest();
xhr.open(meth...
How to set timeout for http.Get() requests in Golang?
I'm making a URL fetcher in Go and have a list of URLs to fetch. I send http.Get() requests to each URL and obtain their response.
...
How do I catch an Ajax query post error?
...handling
});
Another way is using .ajax:
$.ajax({
type: "POST",
url: "some.php",
data: "name=John&location=Boston",
success: function(msg){
alert( "Data Saved: " + msg );
},
error: function(XMLHttpRequest, textStatus, errorThrown) {
alert("some error");
}
});
...
HTTP headers in Websockets client API
...nd then passes this ticket during WebSocket connection setup either in the URL/query string, in the protocol field, or required as the first message after the connection is established. The server then only allows the connection to continue if the ticket is valid (exists, has not been already used, ...
Show loading image while $.ajax is performed
...nd hide it after it completes:
$('#loading-image').show();
$.ajax({
url: uri,
cache: false,
success: function(html){
$('.info').append(html);
},
complete: function(){
$('#loading-image').hide();
}
});
I usually prefer the more general soluti...