String startsWith() and endsWith()The startsWith() and endsWith() methods of strings returns whether a search string appears at the beginning or end of the provided string.stringStringswidely2015-09-302018-03-30https://tc39.es/ecma262/multipage/text-processing.html#sec-string-objectshttps://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/String/endsWithjavascript.builtins.String.endsWithjavascript.builtins.String.startsWithhttps://nowyoucanuse.com/features--string-startsends-with.html