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How to unset a JavaScript variable?
I have a global variable in JavaScript (actually a window property, but I don't think it matters) which was already populated by a previous script but I don't want another script that will run later to see its value or that it was even defined.
...
Pure JavaScript equivalent of jQuery's $.ready() - how to call a function when the page/DOM is ready
...;
<html>
<head>
</head>
<body>
Your HTML here
<script>
// self executing function here
(function() {
// your page initialization code here
// the DOM will be available here
})();
</script>
</body>
</html>
For modern browsers (anything from ...
Can I run multiple versions of Google Chrome on the same machine? (Mac or Windows)
...sions, side-by-side. This answer quotes my original answer, and includes a script which does the job for you.
Quoted from: section 7 of Cross-browser testing: All major browsers on ONE machine:
Chrome: Stand-alone installers can be downloaded from File Hippo. It is also possible to run mu...
How to get the data-id attribute?
...ry's data object. ... Every attempt is made to convert the string to a JavaScript value (this includes booleans, numbers, objects, arrays, and null). A value is only converted to a number if doing so doesn't change the value's representation. For example, "1E02" and "100.000" are equivalent as numbe...
mkdir -p functionality in Python [duplicate]
...s. If you're writing something more sophisticated than a simple throwaway script running in a controlled environment, you're better off going with the accepted answer that requires only one system call.
UPDATE 2012-07-27
I'm tempted to delete this answer, but I think there's value in the comment ...
Environment variables in Mac OS X
...was never implemented. Instead, you can use another mechanism to execute a script at login, and have that script call launchctl to set up the launchd environment.
/etc/launchd.conf: this is read by launchd when the system starts up and when a user logs in. They affect every single process on the sys...
How to retrieve checkboxes values in jQuery
...t have the name "chkboxName" in comma separate string
And here is the javascript
function showSelectedValues()
{
alert($("input[name=chkboxName]:checked").map(
function () {return this.value;}).get().join(","));
}
Here is the HTML sample
<html>
<head>
</head>
<bo...
Simulating tremor (from e.g. Parkinson's Disease) with the mouse on a webpage?
...ink to my repo: https://github.com/aristocrates/pointer-lock-demo
The javascript code of importance is contained in app.js, in the canvasLoop(e) method.
The only thing I changed from the original demo was after the lines
x += movementX * 2;
y += movementY * 2;
I added two lines to represent ran...
How to make script execution wait until jquery is loaded
...t jquery hasn't finished loading before it is being called by a subsequent script. Is there a way to check for the existence of jquery and if it doesn't exist, wait for a moment and then try again?
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Tomcat: How to find out running tomcat version
...
Try parsing or executing the Tomcat_home/bin directory and look for
a script named version.sh or version.bat depending on your
operating system.
Execute the script ./version.sh or version.bat
If there are no version.bat or version.sh then
use a tool to unzipping JAR files (\tomcat\server\lib\...