JS to determine whether a key is long pressed

2021-01-14 05:41:16
OfStack

This article illustrates JS's method for determining whether a 1 key is long pressed. To share with you for your reference, as follows:


<html xmlns="http://www.w3.org/1999/xhtml">
<head>
  <title></title>
  <script type="text/javascript">
    var lastkeyCode = -1;
    function TestKeyDown(event) {
      if (event.keyCode == lastkeyCode) {
        alert(" A key was pressed repeatedly !");
        // To deal with 
      }
      lastkeyCode = event.keyCode;
    }
  </script>
</head>
<body>
  <input type="text" value="Test" onkeydown="TestKeyDown(event);" />
</body>
</html>

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I hope this article is helpful to JavaScript program design.