Javascript Reference - HTML DOM Style flexGrow Property

The flexGrow property gets and sets how much the item will grow relative to the rest of the flexible items inside the container.

Browser Support


`flexGrow`	Yes	10	Yes	Yes (WebkitFlexGrow)	Yes

Syntax

Return the flexGrow property:

var v = object.style.flexGrow

Set the flexGrow property:

object.style.flexGrow='number|initial|inherit'

Property Values

number: A unitless number to control how the item will grow relative to the rest of the flexible items. Default value is 0.

Technical Details

Default Value:	0
Return Value:	A string representing the flex-grow property
CSS Version	CSS3

Example

The following code shows how to make a DIV element grow wider.


<!DOCTYPE html>
<html>
<head>
<style> 
#main {<!--  w  w w.j av a 2  s.  co m-->
    width: 350px;
    height: 100px;
    border: 1px solid black;
    display: -webkit-flex; /* Safari */
    display: flex;
}

/* Safari 6.1+ */
#main div:nth-of-type(1) {-webkit-flex-grow: 1;}
#main div:nth-of-type(2) {-webkit-flex-grow: 1;}
#main div:nth-of-type(3) {-webkit-flex-grow: 1;}

/* Standard syntax */
#main div:nth-of-type(1) {flex-grow: 1;}
#main div:nth-of-type(2) {flex-grow: 1;}
#main div:nth-of-type(3) {flex-grow: 1;}
</style>
</head>
<body>

<div id="main">
  <div style="background-color:red;"></div>
  <div style="background-color:blue;" id="myBlueDiv"></div>
  <div style="background-color:yellow;"></div>
</div>
<button onclick="myFunction()">test</button>
<script>
function myFunction() {
    document.getElementById("myBlueDiv").style.WebkitFlexGrow = "3"; // Safari 6.1+
    document.getElementById("myBlueDiv").style.flexGrow = "3";
}
</script>

</body>
</html>

The code above is rendered as follows: