Input Month defaultValue attribute

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Definition and usage

defaultValue Property to set or return the default value of the month field.

Note:The default value is HTML value attribute specified in the following.

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 "More Examples").

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

Instance

Example 1

Change the default value of the month field:

document.getElementById("myMonth").defaultValue = "2023-06";

Try it yourself

Example 2

Get the default value of the month field:

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

Try it yourself

Example 3

An example showing the difference between defaultValue and value properties:

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

Try it yourself

Syntax

Return defaultValue property:

monthObject.defaultValue

set defaultValue property:

monthObject.defaultValue = value

属性值

值 描述
value 规定月份字段的默认值。

技术细节

返回值： 字符串值，表示月字段的默认值。

浏览器支持

Chrome Edge Firefox Safari Opera
Chrome Edge Firefox Safari Opera
支持 10.0 支持 支持 支持

注意： 元素在 Firefox 中不显示任何日期字段/日历。

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