Web Reference: Nov 24, 2016 · My error was that I was using the new ES6 javascript syntax, not compatible with my asset pre-compilation. In specific, defining default parameters in function definition, so I took the solution from this answer: Instead of: ... Use: b = typeof b !== 'undefined' ? b : 'default_b'; ... The JavaScript exceptions "unexpected token" occur when a specific language construct was expected, but something else was provided. This might be a simple typo. ExecJS::RuntimeError: SyntaxError: Unexpected token: punc ()) from get@(execjs):3538:630 The following is my application.js file which i am trying to load the page when someone make a selection from subject list or enter something in the course field. The program works perfectly when running locally but fails to deploy on Heroku.
YouTube Excerpt: Cool way to be able to debug js errors in a rails app.
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