escape("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789") ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789 escape("@*_+-./") %40%2A%5F%2B%2D%2E%2F escape(" ") %20 escape("Āあ") %C4%80%E3%81%82 escape("\n") %0A escape("abc\0defg") abc escape() undefined