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<input type="text" class="input-here">
<div class="log"></div>
<script>
var inputEle = document.querySelector('.input-here');
var logEle = document.querySelector('.log');
inputEle.onkeydown = function(event) {
var ele = document.createElement('p');
ele.innerText = '按下了' + event.keyCode;
logEle.appendChild(ele);
}
inputEle.addEventListener('keyup', function(event) {
var ele = document.createElement('p');
ele.innerText = '彈起了' + event.keyCode;
logEle.appendChild(ele);
});
</script>
運行結果