Javascript DOM CSS Style zIndex Property set to negative value

Introduction

Change the z-index property value of an <div> element: 

document.getElementById("myDIV").style.zIndex = "-1";

Click the button to change the z-index of the blue DIV element:

View in separate window 

<!DOCTYPE html>
<html>
<head>
<style>
#myDIV {/*from  w  w w  .j a  va  2  s  .c  o  m*/
  position: absolute;
  width: 300px;
  height: 150px;
  background-color: lightblue;
  border: 1px solid black;
}

#DIV2 {
  position: relative;
  top: 130px;
  left: 30px;
  width: 300px;
  height: 150px;
  background-color: coral;
  border: 1px solid black;
}
</style>
</head>
<body>
<button onclick="myFunction()">Test</button>

<div id="DIV2">
  <h1>Voila!</h1>
</div>

<div id="myDIV">
</div>

<script>
function myFunction() {
  document.getElementById("myDIV").style.zIndex = "-1";
}
</script>

</body>
</html>



PreviousNext

Related