jjs has capabilities that
jrunscript doesn't, and
jrunscript has an initialization file. Below are a few simple examples of
nashorn> alert("hello, InfoWorld");
script error: ReferenceError: "alert" is not defined in <STDIN> at line number 1
This doesn't work because
alert() is a browser/DOM function. D'oh! I could have sworn that worked in Rhino, though.
nashorn> print("Hello, InfoWorld");
This does work because
nashorn> var a = 1;
nashorn> var b = "1";
nashorn> print (a+b);
a+b, consider this:
nashorn> print (typeof(a+b));
Nashorn supports the "#" character as a leading line comment marker, so
chmod utility to make it runnable.
You'll find a scripting mode in
jrunscript seems to lack. In scripting mode, expressions inside back-ticks are passed to the outer shell for evaluation:
$ jjs -scripting
jjs> print ('ls');
Creative Cloud Files
Scripting mode also enables an extension for "heredocs," which are basically multiline strings in a format familiar to Perl and Ruby programmers.
By the way, the arrow keys on the Mac keyboard don't work properly for line editing in the
jjs shell. But there is a hack for that: You can
brew install rlwrap and use that as part of your alias for
jjs in your .bashrc or .zshrc file.
This weekend's Windows 10 upgrade has users angry, and it's unclear if the ploy will continue
Here’s the best of the best for Windows 10. Sometimes good things come in free packages
Speaking at the O'Reilly Fluent conference, Eich also endorsed the Service Workers mobile app...
The new upgrade introduces small improvements across the board, but nothing to sway Windows 7 stalwarts...
These tiny Windows systems can be hidden away yet offer complete computing power
After long suffering from stagnant development, the IronPython project for running Python on .Net is...
Windows 7 and 8.1 customers have another new version of GWX, now with a countdown clock