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How to pass variable from jade template file to a script file?
...pt var data = #{JSON.stringify(data)}
<script>var data = {&quot;foo&quot;:&quot;bar&quot;} </script>
!{} is for unescaped code interpolation, which is more suitable for objects:
script var data = !{JSON.stringify(data)}
<script>var data = {"foo":"bar"} </scrip...
Does JavaScript have “Short-circuit” evaluation?
...
Yes, JavaScript has "short-circuit" evaluation.
if (true == true || foo.foo){
// Passes, no errors because foo isn't defined.
}
Live DEMO
if (false && foo.foo){
// Passes, no errors because foo isn't defined.
}
Live DEMO
...
What is the !! (not not) operator in JavaScript?
... false
!!true === true
!!0 === false
!!parseInt("foo") === false // NaN is falsy
!!1 === true
!!-1 === true // -1 is truthy
!!(1/0) === true // Infinity is truthy
!!"" === false // empty string is falsy
!!"foo" ...
How to obtain the query string from the current URL with JavaScript?
...d turn them into a handy URLSearchParams object.
let paramsString = "name=foo&age=1337"
let searchParams = new URLSearchParams(paramsString);
searchParams.has("name") === true; // true
searchParams.get("age") === "1337"; // true
Notice that the browser support is still limited on this interf...
Rotating videos with FFmpeg
...ow how to determine the current degrees of rotation using MediaInfo (excellent library, btw) but I'm stuck on FFmpeg now.
...
What is the difference between a static and a non-static initialization code block
...riting JNI code:
class JNIGlue {
static {
System.loadLibrary("foo");
}
}
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Good way to use table alias in Update statement?
I'm using SQL Server, and trying to update rows from within the same table. I want to use a table alias for readability.
2 ...
Force DOM redraw/refresh on Chrome/Mac
Every once in a while, Chrome will render perfectly valid HTML/CSS incorrectly or not at all. Digging in through the DOM inspector is often enough to get it to realize the error of its ways and redraw correctly, so it's provably the case that the markup is good. This happens frequently (and predi...
How to get names of enum entries?
...s of the enum members. For example, the following code:
enum myEnum { bar, foo }
for (var enumMember in myEnum) {
console.log("enum member: ", enumMember);
}
Will print the following:
Enum member: 0
Enum member: 1
Enum member: bar
Enum member: foo
If you instead want only the member names, and...
Get name of current script in Python
...
import sys
print sys.argv[0]
This will print foo.py for python foo.py, dir/foo.py for python dir/foo.py, etc. It's the first argument to python. (Note that after py2exe it would be foo.exe.)
sha...