javascript - 从JavaScript中的日期中减去天(Subtract days from a date in JavaScript)

Question

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Does anybody know of an easy way of taking a date (eg Today) and going back X days?(有谁知道约会（例如今天）和回溯X天的简单方法吗？)

So, for example, if I want to calculate the date 5 days before today.(因此，例如，如果我想计算今天前5天的日期。)   ask by jonhobbs translate from so

Answer 1

Try something like this:(尝试这样的事情：)

var d = new Date(); d.setDate(d.getDate()-5); Note that this modifies the date object and returns the time value of the updated date.(请注意，这将修改日期对象并返回更新日期的时间值。) var d = new Date(); document.write('Today is: ' + d.toLocaleString()); d.setDate(d.getDate() - 5); document.write('<br>5 days ago was: ' + d.toLocaleString());