Which key code 108 represents?

The secret of key code 108: It is also the Enter key!

This article will reveal the meaning of key code 108. You may already know that the key code 13 represents the Enter key (Enter), but what is 108?

Let's look at a code snippet:

 if (e.keyCode === 108 || e.keyCode === 13) {
    e.stopPropagation();
}

This code checks whether keyCode property of the event is 13 or 108 and prevents the event from bubbled. 13 is the standard Enter key code, so what about 108?

The answer is: 108 is also the Enter key! Many keyboards, especially those with numeric keypads, have two Enter keys. The key code 13 usually corresponds to the Enter key in the main keyboard area, while 108 corresponds to the Enter key on the numeric keypad.

Therefore, the above code is intended to intercept Enter events from the primary keyboard and numeric keypad, preventing problems such as repeated submissions of forms. By listening to these two keycodes simultaneously, the code has better compatibility and robustness and can handle input from different types of keyboards.

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