hit spacebar javascript code example

Example 1: javascript knowing when space is pressed

// event = keyup or keydown
document.addEventListener('keyup', event => {
  if (event.code === 'Space') {
    console.log('Space pressed'); //whatever you want to do when space is pressed
  }
})
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Example 2: execute JS code after pressing space bar

document.body.onkeyup = function(e){
    if(e.keyCode == 32){
        //your code
    }
}