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size property (input, isindex)

Browser support:

Specifies or returns the width of a control, in characters.

The width is calculated by the average character widths. You can set the dimensions of the input field by the width and the height style properties.

Syntax:

object.size;

You can find the related objects in the Supported by objects section below.

This property is read/write.

HTML page for this property: size

Possible values:

Integer that sets or retrieves the width of the control, in characters. The default is 20.

Default: this property has no default value.

Example HTML code 1:

This example illustrates the use of the size attribute:

Input field with size=20:
<br />
<input id="myInput" type="text" size="20" />
<br /><br /><br />
Input field with size=30:
<br />
<input id="myInput" type="text" size="30" />

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Example HTML code 2:

This example illustrates the use of the size property:

<head>
    <script type="text/javascript">
        function SetSize () {
            var input = document.getElementById ("myInput");
            input.size = input.value;
        }
    </script>
</head>
<body>
    <input id="myInput" type="text" value="70" size="30" />

    <br />
    Change the value of the input field!
    <button onclick="SetSize ();">Change input size!</button>
</body>