ExecJS::ProgramError: SyntaxError: Reserved word "function"

Question

In our rails rfq.js.coffee, we only have a simple js code:

$(function() {
  $('#need_report').change(function(){
    if ($(this).val() == true) {
      $('#report_language').hide();
    }  // end if
  });  // end change()
});  // end ready(function)

However this code causes an error saying that function() in first line is a reserved word. Since the first line is basically a jquery $(document).ready(function () {}), we have no clue why this error shows up. Any thoughts about it? Thanks so much.

Wait, is this CoffeeScript? Why are you using normal JS in CoffeeScript? — Blender
– Blender, Commented Jan 25, 2012 at 22:11

Domenic · Accepted Answer · 2012-01-25 22:16:08Z

48

You can't use standard JS like that in a Coffeescript file. Either rename the file to rfq.js, or convert it to coffeescript:

$ ->
  $('#need_report').change ->
    if $(this).val()
      $('#report_language').hide()

edited Jan 25, 2012 at 22:16

Domenic

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answered Jan 25, 2012 at 22:14

Dylan Markow

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4 Comments

user938363 Over a year ago

Just renamed the file to js file. Thought js can be used in coffee script without any change. Also found a site to convert the js to coffee script or vise verse. js2coffee.org thanks.

Dylan Markow Over a year ago

Yeah, it's not like Sass vs CSS where you can use standard CSS inside an scss file.

user938363 Over a year ago

However, after renaming the rfqs.js.coffee to rfqs.js, there is a strange error saying illegal character on line 9574 (There is only about 100 lines code in application.js) in application.js. I renamed the file name back to .coffee and the error disappeared. Strange enough!

Nowaker Over a year ago

I don't understand. According to the CoffeeScript site: "You can use any existing JavaScript library seamlessly from CoffeeScript (and vice-versa)."

hourwise · Accepted Answer · 2013-01-08 12:43:27Z

8

You can embed regular javascript by surrounding the code with back-ticks "`". I wish it worked like the other parsing languages as well...it took me lot's of unnecessary debugging and searching to figure that out. http://coffeescript.org/#embedded

answered Jan 8, 2013 at 12:43

hourwise

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Comments

hguzman · Accepted Answer · 2017-03-26 23:57:09Z

2

Maybe you wrote JavaScript code into file with extension .coffee you can use js2.coffee to convert your code from JavaScript to CoffeeSecript

answered Mar 26, 2017 at 23:57

hguzman

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