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Prevent a webpage from navigating away using JavaScript
...ion:
window.onbeforeunload = function() {
return "";
}
Note: An empty string is returned because newer browsers provide a message such as "Any unsaved changes will be lost" that cannot be overridden.
In older browsers you could specify the message to display in the prompt:
window.onbeforeunlo...
Fragment onCreateView and onActivityCreated called twice
...vate Fragment mFragment;
private Activity mActivity;
private final String mTag;
private final Class<T> mClass;
public TabListener(Activity activity, String tag, Class<T> clz) {
mActivity = activity;
mTag = tag;
mClass = clz;
mFragment=mAct...
how to get GET and POST variables with JQuery?
...actually empty, you will get a javascript syntax error. If you know it's a string, you should wrap it in quotes. If it's an integer, you may want to test to see if it actually exists before writing the line to javascript.
sh...
Generate random int value from 3 to 6
...- @min + 1)) + @min
Updated based on comments:
NEWID generates random string (for each row in return)
CHECKSUM takes value of string and creates number
modulus (%) divides by that number and returns the remainder (meaning max value is one less than the number you use)
ABS changes negative res...
Pretty-Print JSON Data to a File using Python
...
@Zelbinian - json.dumps returns a string. json.dump writes to a file.
– dkamins
Feb 7 '12 at 17:31
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How do I “git blame” a deleted line?
...w the contents of the line, this is an ideal use case for:
git log -S <string> path/to/file
which shows you commits which introduce or remove an instance of that string. There's also the -G<regex> which does the same thing with regular expressions! See man git-log and search for the -...
How can I check the syntax of Python script without executing it?
...
Notice that ast.parse(string) is equivalent to compile(string, filename='<unknown>', mode='exec', flags=ast.PyCF_ONLY_AST).
– Nils Lindemann
Jul 30 at 12:36
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How to access a mobile's camera from a web app?
...
Both capture="camera" (String) and the older accept="image/*;capture=camera" have been replaced in 2012 with capture="capture" (Boolean) . The attribute is used to force capture instead of selecting from the library. See the spec and Correct Syntax...
Java using enum with switch statement
... a few usages of Java enum:
.name() allows you to fetch the enum name in String.
.ordinal() allow you to get the integer value, 0-based.
You can attach other value parameters with each enum.
and, of course, switch enabled.
enum with value parameters:
enum StateEnum {
UNDEFINED_POLL ...
jQuery text() and newlines
...in JSON format with an API which embedded literal \n control characters in strings.
– D. Visser
Mar 25 '16 at 11:46
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