Javascript Reference - HTML DOM Input Text size Property

The size property sets or gets the size attribute of a text field.

The size attribute specifies the width of a text field in number of characters. The default value is 20.

Browser Support

The size property is supported in all major browsers.


`size`	Yes	Yes	Yes	Yes	Yes

Syntax

Return the size property.

var v = textObject.size

Set the size property.

textObject.size=number

Property Values

Value	Description
number	Set the width of the text field in number of characters. Default value is 20

Return Value

A Number type value representing the width of the text field in number of characters.

Example

The following code shows how to get the width of a text field.


<!DOCTYPE html>
<html>
<body>
<!--from  w  w w  .  j av  a  2 s  .  c om-->
Name: <input type="text" id="myText" size="30">
<button onclick="myFunction()">test</button>
<p id="demo"></p>

<script>
function myFunction() {
    var x = document.getElementById("myText").size;
    document.getElementById("demo").innerHTML = x;
}
</script>

</body>
</html>

The code above is rendered as follows:

Example 2

The following code shows how to set the width of a text field.


<!DOCTYPE html>
<html>
<body>
<!--from   ww w .  j  a va 2 s. com-->
Name: <input type="text" id="myText">
<button onclick="myFunction()">test</button>

<script>
function myFunction() {
    document.getElementById("myText").size = "50";
}
</script>

</body>
</html>

The code above is rendered as follows: