JSON – underblob

Get package.json version from CLI

Using Node

node -p -e "require('./package.json').version"

The -p argument prints the result and the -e argument expects executable JS to follow it. This one is also helpful for getting specific properties from any JSON file.

Using jq

cat ./package.json | jq '.version'

Use the cat program to read the contents of the file and pipe it to the jq program to parse the JSON.

HTTP Header for JSON

To print JSON for consumption by AJAX or other web services, change the HTTP headers before output:

<?php
	header( 'Content-type: application/json' );
	echo json_encode( $json );
?>

Tag: JSON

Get package.json version from CLI

Using Node

Using jq

Links

HTTP Header for JSON