JavaScript Engine for Racket

by JavaCommons Technologies <javacommons@gmail.com>

(require js-eval) package: js-eval

This basically provides js-eval, js-global-get, and js-global-set!. This depends on JavaScript for PLT Scheme package, and all of the functions in JavaScript for PLT Scheme package can be used with this package.

1 Example and usage
                   
2 Reference        

1. Example and usage

#! /usr/bin/env racket                                 
#lang racket                                           
(require js-eval)                                      
(require output)                                   
                                                       
(js-global-set! "xyz" 888)                             
(js-eval "print(xyz+$1)" 11)                           
(js-eval "xyz=(123+$1)*$2" 11 20)                      
(js-eval "echo(xyz, 'xyz')")                           
(js-global-get "xyz")                                  
(js-eval "$result = $1 + $2" 11 22)                    
(dump (js-global-get "$result"))                       
(js-global-set! "list-ref" list-ref)                   
(js-eval "global['list-ref']($1, $2)" '(111 222 333) 1)
(js-global-set! "list_ref" list-ref)                   
(js-eval "list_ref($1, $2)" '(111 222 333) 1)          

2. Reference

(js-eval script params ...)

Evaluates a JavaScript script with optional parameters ($1～$n).

(js-global-get name)

Attempts to lookup property name in global-object.

(js-global-set! name x)

Sets property name in global-object.