Google Maps Script error in Onion.js

Question

This morning I just started getting a google maps script error.

Line: 0 Char: 0 Error: Script Error Code: 0 URL:

I reverted all my code changes ba

Answer 1

I was having a similar problem and the provided solution didn't work for me. I was getting the error in Delphi inside the TWebBrowser control also with the meta tag.

I figured out the problem.

Onion.js fires the error, because it calls JSON.parse.

JSON Parse isn't supported by the web browser control. You can test this by adding this to your JavaScript (already quoted for Delphi):

'var code = ''"\u2028\u2029"''; JSON.parse(code); ' +

Every browser should execute

var code = '"\u2028\u2029"';
JSON.parse(code);

When executed in Delphi it fires an error instantly.

You can avoid the whole thing with a JSON3 polyfill (already quoted for Delphi):

''  +

Then JSON will be defined and work as expected, resolving the problem.