The LED's legs are associated with two pins on the Arduino: ground and pin 13.
The segment between the LED and pin 13 is a resistor, which helps limit the current to keep the LED from wearing itself out.
Without it, you'll get an admonition that the LED may wear out soon.
It doesn't make any difference whether the resistor precedes or after the LED in the circuit, or what direction around it heads.
The shaded stripes recognize the resistor's worth, and for this circuit, somewhere in the range of 100 ohms to 1000 ohms will work incredible.
To get the live demonstration of this project using tinkercad use following link:
