Input Week defaultValue attribute

HTML DOM Input Week Obheto

Definition and usage

defaultValue Set or return the default value of the week field attribute.

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

The difference between defaultValue and value attributes 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).

If you want to check if the week in the week field has changed, the defaultValue attribute is very useful.

Instance

Example 1

Change the default value of the week field:

document.getElementById("myWeek").defaultValue = "2023-W01";

Try it yourself

Example 2

Get the default value of the week field:

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

Try it yourself

Example 3

Show the example of the difference between defaultValue and value attributes:

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

Try it yourself

Syntax

Return the defaultValue attribute:

weekObject.defaultValue

Set the defaultValue attribute:

weekObject.defaultValue = value

属性值

值 描述
value 规定星期字段的默认值。

技术细节

返回值： 字符串值，表示星期字段的默认值。

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：<input type="week"> 元素在 Firefox 中不显示任何日期字段/日历。

HTML DOM Input Week Obheto