log

Output a message to the debugger console.

Installation

npm install @stdlib/console-log

Alternatively,

To load the package in a website via a script tag without installation and bundlers, use the ES Module available on the esm branch (see README).
If you are using Deno, visit the deno branch (see README for usage intructions).
For use in Observable, or in browser/node environments, use the Universal Module Definition (UMD) build available on the umd branch (see README).

The branches.md file summarizes the available branches and displays a diagram illustrating their relationships.

To view installation and usage instructions specific to each branch build, be sure to explicitly navigate to the respective README files on each branch, as linked to above.

Usage

var log = require( '@stdlib/console-log' );

log( [data][,...args] )

Outputs a message to the debugger console.

log( 'Hello, World!' );

If the first argument is a string, the argument is the primary message and may include zero or more substitution strings.

log( 'Hello, %s!', 'World' );

Notes

In general, prefer formatting with @stdlib/string-format, as string substitution support is not consistent across JavaScript environments.
```
var format = require( '@stdlib/string-format' );

log( format( '%s: %.2f', 'Foo', 3.14 ) );
```

Examples

var log = require( '@stdlib/console-log' );

log( 'Hello, World!' );
log( 'Hello, %s!', 'World' );
log( '%d', 1 );
log( '%.2d', 1.1 );
log( '%i', 2 );
log( '%.2i', 2.2 );
log( '%f', 3.14 );
log( '%.2f', 4.13 );
log( '%o', { 'foo': 'bar' } );
log( '%O', [ 1, 2, 3, 4 ] );

Notice

This package is part of stdlib, a standard library for JavaScript and Node.js, with an emphasis on numerical and scientific computing. The library provides a collection of robust, high performance libraries for mathematics, statistics, streams, utilities, and more.

For more information on the project, filing bug reports and feature requests, and guidance on how to develop stdlib, see the main project repository.