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Input Month stepDown() 方法


实例

将月份字段的值减少3个月:

document.getElementById("myMonth").stepDown(3);
亲自试一试 »

定义和用法

stepDown() 方法将月份字段的值递减指定的数字。

此方法只会影响 MONTHS(而不是年份)。

提示:要增加值,请使用 stepUp() 方法。


浏览器支持

方法
stepDown() Yes 12.0 不支持 Yes Yes

语法

numberObject.stepDown(number)

参数值

参数 描述
number 必需。指定月份字段应减少的月份数。

如果省略,则月份减少"1"

技术细节

返回值: 无返回值

更多实例

实例

将月份字段的值减 1(默认):

document.getElementById("myMonth").stepDown();
亲自试一试 »

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