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jquery input select all on focus
...$("input[type=text]").focus(function() {
var save_this = $(this);
window.setTimeout (function(){
save_this.select();
},100);
});
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What's the best way to set a single pixel in an HTML5 canvas?
...As of July 2017, fillRect() is 5-6× faster on Firefox v54 and Chrome v59 (Win7x64).
Other, sillier alternatives are:
using getImageData()/putImageData() on the entire canvas; this is about 100× slower than other options.
creating a custom image using a data url and using drawImage() to show it:...
Socket 错误返回码详解 - C/C++ - 清泛网 - 专注C/C++及内核技术
...cket error 10091 - Network subsystem is unavailable
Socket error 10092 - WINSOCK.DLL version out of range
Socket error 10093 - Successful WSAStartup not yet performed
Socket error 10094 - Graceful shutdown in progress
Socket error 11001 - Host not found
Socket error 11002 - Non-authoritati...
Open directory dialog
...e will be saved. I know that in WPF I should use the OpenFileDialog from Win32, but unfortunately the dialog requires file(s) to be selected - it stays open if I simply click OK without choosing one. I could "hack up" the functionality by letting the user pick a file and then strip the path to fig...
How do you post to an iframe?
...this
...
var el = document.getElementById('targetFrame');
var doc, frame_win = getIframeWindow(el); // getIframeWindow is defined below
if (frame_win) {
doc = (window.contentDocument || window.document);
}
if (doc) {
doc.forms[0].someInputName.value = someValue;
...
doc.forms[0].submit()...
ORA-12514 TNS:listener does not currently know of service requested in connect descriptor
We have an application running locally where we're experiencing the following error:
25 Answers
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How to import a class from default package
...ulations");
CalculationsInterface api = (CalculationsInterface)calcClass.newInstance();
// Use it
double res = api.GetProgress(10);
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如何建立一套适合自己的高胜算交易系统 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...，因此寻找适合自已的交易系统与完善自已的交易系统是专业交易人士投资的一生几乎每天都在做的一件事。
什么是交易系统？
交易系统是完整的交易规则体系。一套设计良好的交易系统，必须对投资决策的各个相关环节作...
What is the max size of localStorage values?
...and this answer works perfectly fine on both vanilla Chrome and Firefox on Win10, giving size=5000.
– A. Chiesa
Apr 28 at 6:43
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How do I check the operating system in Python?
...tform == "linux" or platform == "linux2":
# linux
elif platform == "darwin":
# OS X
elif platform == "win32":
# Windows...
sys.platform has finer granularity than sys.name.
For the valid values, consult the documentation.
See also the answer to “What OS am I running on?”
...