Input Number stepDown() 方法
实例
例子 1
将数字字段的值减 5:
document.getElementById("myNumber").stepDown(5);
例子 2
将数字字段的值减 1(默认):
document.getElementById("myNumber").stepDown();
语法
numberObject.stepDown()number)
Parameter value
Parameter | Description |
---|---|
number |
Required. Specifies the value to be reduced for the numeric field. If omitted, subtract '1'. |
Technical details
Return value:
No return value.
Browser support
Chrome | Edge | Firefox | Safari | Opera |
---|---|---|---|---|
Chrome | Edge | Firefox | Safari | Opera |
Supported | Not supported | Supported | Supported | Supported |
Note:In Safari, you must enter a number in the numeric field before you can subtract the value.