The HTML DOM Style fontSize property is used to set or return the size of font.
Following is the syntax for −
Setting the fontSize property −
object.style.fontSize = "value|initial|inherit"
The above properties are explained as follows −
| Value | Description |
|---|---|
| xx-small x-small small medium large x-large xx-large | Forsetting the front size from one of value ranging from xx-small toxx-large. |
| smaller | Itdecreases the text font-size by one relative unit. |
| larger | Itincreases the text font-size by one relative unit. |
| length | Fordefining the font-size in legal length units. |
| % | Itsets the child element font size relative to % of the parentelement font size. |
| initial | Forsetting this property to initial value. |
| inherit | Toinherit the parent property value |
Let us look at an example for the fontSize property −
Example
<!DOCTYPE html>
<html>
<head>
<style>
li{
font-size: 1.1em;
background-color: snow;
font-family: cursive;
}
</style>
<script>
function changeFontSize() {
for(var i=0;i<3;i++){
document.getElementsByTagName("li")[i].style.fontSize="xx-large";
}
document.getElementById("Sample").innerHTML="The font size for the above list is now set to xx- large";
}
</script>
</head>
<body>
<ul>
<li>This is list item 1.</li>
<li>This is list item 2</li>
<li>This is list item 3</li>
</ul>
<p>Change the above list items font size by clicking the below button</p>
<button onclick="changeFontSize()">Change Font Size</button>
<p id="Sample"></p>
</body>
</html>Output
On clicking the “Change Font Size” button −
