Complex sentence: The third edition of ECMA-262 still includes an escape function that uses this syntax, along with encodeURI and encodeURIComponent functions, which apply UTF-8 encoding to a string, then percent-escape the resulting bytes.
Split into simpler sentences: The third edition of ECMA-262 still includes an escape function that uses this syntax, along with encodeURI and encodeURIComponent functions. These latter functions apply UTF-8 encoding to a string, and then percent-escape the resulting bytes.