Element getElementsByTagName() Method - Using the "*" parameter, Change the background color of all elements inside a <div> element: - Javascript DOM

Javascript examples for DOM:Element getElementsByTagName

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Description

Element getElementsByTagName() Method - Using the "*" parameter, Change the background color of all elements inside a <div> element:

Demo Code

ResultView the demo in separate window 

<!DOCTYPE html>
<html>
<head>
<style>
#myDIV {/*from  w  w  w.jav  a 2  s .  com*/
    border: 1px solid black;
    margin: 5px;
}
</style>
</head>
<body>

<div id="myDIV">
  <h3>A h3 element in div.</h3>
  <p>P element in div.</p>
  <span>A span element in div.</span>
  <h2>A h2 element in div.</h2>
  <div>A div element in div.</div>
  <p>Another p element in div.</p>
</div>

<button onclick="myFunction()">Test</button>

<script>
function myFunction() {
    var x = document.getElementById("myDIV");
    var y = x.getElementsByTagName("*");
    var i;
    for (i = 0; i < y.length; i++) {
        y[i].style.backgroundColor = "red";
    }
}
</script>

</body>
</html>

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