Javascript DOM CSS Style borderTopWidth Property set

Introduction

Change the width of the top border of a <div> element to thin: 

document.getElementById("myDiv").style.borderTopWidth = "thin";

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<!DOCTYPE html>
<html>
<head>
<style>
#myDiv {//from   w  w w  .j ava  2 s  .  co  m
  border-style: solid;
}
</style>
</head>
<body>

<div id="myDiv">This is a div element.</div>
<br>
<button type="button" onclick="myFunction()">Change width of the top border</button>

<script>
function myFunction() {
  document.getElementById("myDiv").style.borderTopWidth = "thin";
}
</script>
</body>
</html>



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