Flex不是基于ECMA(基本上是javascript),如果是这样,试试只是在日期对象中添加86400000毫秒?就像是:
var mili = 1000;
var secs = 60;
var mins = 60;
var hours = 24;
var day = hours * mins * secs * mili;
var tomorrow = new Date();
var tomorrow.setTime(tomorrow.getTime() + day);
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