Try it Editor: Change flex-basis with JavaScript

Edit This Code :

<!DOCTYPE html>
<html>
<head>
<style>
#main {
    width: 250px;
    height: 100px;
    border: 1px solid #c3c3c3;
    display: -webkit-flex; /* Safari */
    display: flex;
}

#main div {
    -webkit-flex-grow: 0; /* Safari 6.1+ */
    -webkit-flex-shrink: 0; /* Safari 6.1+ */
    -webkit-flex-basis: 50px; /* Safari 6.1+ */
    flex-grow: 0;
    flex-shrink: 0;
    flex-basis: 50px;
}
</style>
</head>
<body>
<h1>Change flex-basis with JavaScript</h1>

<div id="main">
  <div style="background-color:coral;">Red DIV</div>
  <div style="background-color:lightblue;" id="myBlueDiv">Blue DIV</div>
</div>

<p>Click the "Try it" button to set the value of the flexBasis property to "200px" for the blue div element</p>

<button onclick="myFunction()">Try it</button>

<p><b>Note:</b> Internet Explorer 10 and earlier versions earlier versions do not support the flexBasis property.</p>
<p><b>Note:</b> Safari 6.1 (and newer) supports an alternative, the WebkitFlexBasis property.</p>

<script>
function myFunction() {
    document.getElementById("myBlueDiv").style.WebkitFlexBasis = "200px"; // Safari 6.1+
    document.getElementById("myBlueDiv").style.flexBasis = "200px";
}
</script>

</body>
</html>
Result :