javascript - Switch statement works with backspace KeyCode, if statement does not? -

i thought if & switch statements compared things same way in different formats. however, when trying capture backspace keycode switch 1 picked on comparison. why this?

https://jsfiddle.net/ogbw8g8u/3/

$(window).on('keydown', function (e) { e.preventdefault();    if( e.keycode == 8 ) {     $('div').append('<p>if</p>');   }    switch (e.keycode) {     case 8: // backspace       $('div').append('<p>switch</p>');       break;   }  }); 

the error have not statement, capitalization. if statement should not have k in keycode capitalized. should be:

if (e.keycode == 8) {     ... }