Javascript addEventListener keyup Keydown 与 Keycode 不起作用
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时间：2020-08-22 23:55:08 来源:igfitidea点击:
addEventListener keyup Keydown with Keycode not working
提问by Der Admin81
<input class="inputVal">
<script type="text/javascript">
var myVal = document.getElementsByClassName('inputVal')[0];
myVal.addEventListener('keyup', function(e){
var count = myVal.value;
console.log(count)
});
</script>
回答by Leo
Try bind event to documentor window. If an element is not focusable and is not focused, keyboard events won't dispatch to it, instead they dispatch to document root(<body>).
尝试将事件绑定到document或window。如果一个元素不可聚焦且未聚焦，则键盘事件不会分派给它，而是分派给文档 root( <body>)。
