Is there a way to run an inline node javascript in command line?

Question

I want to temporarily run the node javascript. For example, like this:

echo console.log(1+1) > tmp.js & node tmp.js & del tmp.js

It works fine. However, I do not like the use of temporary files. Is there any other cleaner way?

For example, I wonder if there is an option for such a function in node.exe

You can use the -e, --eval option: node -e "console.log(1+1)" Documentation: nodejs.org/api/cli.html#cli_e_eval_script — mdker
– mdker, Commented Jul 16, 2021 at 2:54
In general you don't need temporary files for things like this on Linux. Node, like any sane scripting language, enters a REPL when invoked without a file. Therefore you can pipe commands to it: echo 'console.log(1+1)' | node. This works for other REPL interpreters like bash, tcl, ksh, python etc. — slebetman
– slebetman, Commented Jul 16, 2021 at 3:11

mdker · Accepted Answer · 2021-07-16 03:15:21Z

31

You can use the -e, --eval option: node -e "console.log(1+1)"

answered Jul 16, 2021 at 3:15

mdker

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