Input URL defaultValue attribute

HTML DOM Input URL objekt

Definition and usage

defaultValue Sets or returns the default value of the URL field.

Note:The default value is HTML value attribute specified by

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 example below).

The defaultValue property is very useful if you want to check if the URL of the URL field has changed.

Example

Example 1

Change the default value of the URL field:

document.getElementById("myURL").defaultValue = "https://www.ifeng.com";

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Example 2

Get the default value of the URL field:

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

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Example 3

Example showing the difference between defaultValue and value properties:

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

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Syntax

Return defaultValue property:

urlObject.defaultValue

Indstil defaultValue egenskab:

urlObject.defaultValue = value

Egenskabsværdi

Værdi Beskrivelse
value Definerer standardværdien for URL feltet.

Tekniske detaljer

Returværdi: Strengværdi, der angiver standardværdien for URL feltet.

Browserunderstøttelse

Chrome Edge Firefox Safari Opera
Chrome Edge Firefox Safari Opera
Support 10.0 Support Ikke understøttet Support

HTML DOM Input URL objekt