https://codeql.github.com/codeql-standard-libraries/cpp/predicate.string$toUpperCase.0.html
toUpperCase
API documentation for CodeQL
https://ja.wikibooks.org/wiki/JavaScript/String/prototype/toUpperCase
JavaScript/String/prototype/toUpperCase - Wikibooks
javascriptstringprototypewikibooks
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/toUpperCase
String.prototype.toUpperCase() - JavaScript | MDN
The toUpperCase() method of String values returns this string converted to uppercase.
stringprototypejavascriptmdn