Javascript DOM CSS Style borderTopWidth Property get

Introduction

Return the width of the top border of a <div> element: 

alert(document.getElementById("myDiv").style.borderTopWidth);

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<!DOCTYPE html>
<html>
<body>

<div id="myDiv" style="border-top:thick solid red">This is a div element.</div>
<br>
<button type="button" onclick="myFunction()">Return the width of the top border</button>

<p id="demo"></p>
<script>
function myFunction() {/*from w ww.  j a v a  2  s  .  c  om*/
  document.getElementById("demo").innerHTML = document.getElementById("myDiv").style.borderTopWidth;
}
</script>

</body>
</html>



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