MomentJS - Subtract
与 add 方法一样，subtract 允许从给定日期中减去天、月、小时、分钟、秒等。
语法
moment().subtract(Number, String); moment().subtract(Duration); moment().subtract(Object);
观察以下示例，了解如何使用 subtract 方法 −
示例
<html>
<head>
<title>MomentJS - Subtract Method</title>
<script type="text/JavaScript" src="https://MomentJS.com/downloads/moment.js"></script>
<style>
div {
border: solid 1px #ccc;
padding:10px;
font-family: "Segoe UI",Arial,sans-serif;
width: 75%;
}
</style>
</head>
<body>
<h1>MomentJS - Subtract Method</h1>
<div style="font-size:25px" id="currentdate"></div>
<br/>
<br/>
<div style="font-size:25px" id="changeddate"></div>
<br/>
<br/>
<div style="font-size:25px" id="changeddate1"></div>
<br/>
<br/>
<div style="font-size:25px" id="changeddate2"v</div>
<script type="text/JavaScript">
var day = moment();
document.getElementById("currentdate").innerHTML = "Current Date: " + day._d;
var changeddate = moment().subtract(5, 'days').subtract(2, 'months');
document.getElementById("changeddate").innerHTML = "Subtracting 5 days and 2 month using chaining method: " + changeddate._d;
var changeddate1 = moment().subtract({ days: 5, months: 2 });
document.getElementById("changeddate1").innerHTML = "Subtracting 5 days and 2 month using object method: " + changeddate1._d;
var duration = moment.duration({ 'days': 10 });
var changeddate2 = moment([2017, 10, 15]).subtract(duration);
document.getElementById("changeddate2").innerHTML = "Subtracting 10 days from given date using duration method: " + changeddate2._d;
</script>
</body>
</html>
输出
要从日期中减去天数和月数，我们可以使用 − 进行操作
//链式减法
varchangeddate = moment().subtract(5, 'days').subtract(2, 'months');
// 减法对象方法
varchangeddate1 = moment().subtract({days: 5, months: 2});
//在减法方法中使用 duration
varduration = moment.duration({'days': 10});
varchangeddate2 = moment([2017, 10, 15]).subtract(duration);
上面的示例显示了相同的输出。
momentjs_manipulate_date_and_time.html
