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Why does JQuery have dollar signs everywhere?
...
Unless you are using another language like PHP to populate javascript in your site using HTMLdocs, at which point that dollar sign serves the additional purpose of breaking everything since PHP does use the dollar sign to start all variables. (A reason that if you're ...
What are deferred objects?
...eferred object is resolved or rejected.
Deferred In Action:
$.get("test.php").done(
function(){ alert("$.get succeeded"); }
);
$.get("test.php")
.done(function(){ alert("$.get succeeded"); })
.fail(function(){ alert("$.get failed!"); });
And it seems that the existing ajax() method ...
How can I tell when a MySQL table was last updated?
...p file in O_RDRW mode
close it again
or alternatively
use touch(), the PHP equivalent of the utimes() function, to change the file timestamp.
On page display:
use stat() to read back the file modification time.
shar...
Count with IF condition in MySQL query
...automatically convert NULL to '' when fetching the value. For example with PHP's mysqli interface it would be safe to run your query without COALESCE().
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为AppInventor2开发拓展(Extension) · App Inventor 2 中文网
...能够搞得定的，加油~
如果在编译或开发过程中遇到任何问题，欢迎来社区发帖讨论。
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Use git “log” command in another folder
I have some php files in a Folder A (which is a git project). In these php file I want to execute "git log" but for the folder B. Folder B is another git project (so log is different between A and B).
...
CORS - How do 'preflight' an httprequest?
...ll be current to many of us. Here is how I dealt with it in a jQuery 1.12 /PHP 5.6 context:
jQuery sent its XHR request using only limited headers; only 'Origin' was sent.
No preflight request was needed.
The server only had to detect such a request, and add the "Access-Control-Allow-Origin: " . ...
Escaping ampersand in URL
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there is a php function urlencode which solves this problem : usage $escapedfilename=urlencode($filename);
– Jeremy Young
Feb 19 '19 at 13:28
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实时开发、测试和调试工具 · App Inventor 2 中文网
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Android 日志和 adb（高级）
如果你在 Android 设备上遇到问题，有时可以通过检查 Android 日志来获取信息。 例如，如果你的应用程序空间不足，则会记录在日志中。 日志中的消息通常难以理解，但是你可以使用通知程序组件使你...
Git Push into Production (FTP)
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github.com/banago/PHPloy also does a similar thing but works with submodules, which I suspect some of the mentioned tools might struggle with.
– Simon East
Apr 11 '14 at 12:44
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