このエラーメッセージに関する原因と対処に関して説明します。
エラーメッセージ(英語)：
missing ) after condition
対処
関連リンク
SyntaxError: missing ) after condition - JavaScriptdeveloper.mozilla.org/.../JavaScript/.../Missing_parenth...
https://developer.mozilla.org/ja/docs/Web/JavaScript/Reference/Errors/Missing_parenthesis_after_cond・・・
SyntaxError: missing ) after argument list - JavaScriptdeveloper.mozilla.org/.../JavaScript/.../Missing_parenth...
https://developer.mozilla.org/ja/docs/Web/JavaScript/Reference/Errors/Missing_parenthesis_after_argu・・・
SyntaxError: missing ] after element list - JavaScriptdeveloper.mozilla.org/.../JavaScript/.../Missing_bracket...
https://developer.mozilla.org/ja/docs/Web/JavaScript/Reference/Errors/Missing_bracket_after_list