Input Number defaultValue attribute

HTML DOM Input Number objekt

Definition and usage

defaultValue Sets or returns the default value of a numeric field.

Note:The default value is HTML value attribute as specified.

The difference between defaultValue and value properties is that defaultValue contains the default value, while value contains the current value after some changes. If there is no change, defaultValue and value are the same (see the following example).

The defaultValue property is very useful if you want to find out if the value of a numeric field has changed.

Example

Example 1

Change the default value of a numeric field:

document.getElementById("myNumber").defaultValue = "16";

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Example 2

Get the default value of a numeric field:

var x = document.getElementById("myNumber").defaultValue;

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Example 3

An example showing the difference between defaultValue and value properties:

var x = document.getElementById("myNumber");
var defaultVal = x.defaultValue;
var currentVal = x.value;

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Syntax

Return defaultValue property:

numberObject.defaultValue

Indstil defaultValue egenskab:

numberObject.defaultValue = value

Egenskabsværdi

Værdi Beskrivelse
value Angiver standardværdien for et numerisk felt.

Tekniske detaljer

Returværdi: Strengværdi, der angiver standardværdien for et numerisk felt.

Browser support

Chrome Edge Firefox Safari Opera
Chrome Edge Firefox Safari Opera
Support 10.0 Support Support Support

HTML DOM Input Number objekt