HTML DOM rows ÊôÐÔ

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textareaObject.tabIndex=number

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<html>
<head>
<script type="text/javascript">
function checkTab(x)
  {
  alert(x.tabIndex)
  }
</script>
</head>
<body>

<form>
<textarea id="txt1" tabindex="1" onclick="checkTab(this)">
Hello world....This is a text area
</textarea>
<input id="txt2" type="text" tabindex="2" onclick="checkTab(this)">
<input id="txt3" type="text" tabindex="3" onclick="checkTab(this)">
</form>

</body>
</html>
VUE