javascript - 使用 Javascript 点表示法时出错

Question

我得到Uncaught TypeError: undefined is not a function在date线。正在删除.setHours(this.getHours()-6)它运行得很好，但我需要针对时区进行偏移。在本例中，CST 或 -6 小时。我相信我滥用了点符号。作为注释AmCharts.stringToDate(返回 Date对象。

var lineChartData = [
    {
        date: AmCharts.stringToDate("2014-04-18 13:44:39", "YYYY-MM-DD JJ:NN:SS").setHours(this.getHours()-6),
        ambUp: 67.21,
        ambDown: 62.83,
        ext: 47.75,
        in: 44.15,
        out: 44.38,
        freeze: 23.45,
        fridge: 46.29,
        diff: 2.14,
        diff2: 0.2250 
    },
];

Answer 1

看起来这并不是你想象的那样。此类属性没有特殊范围，您应该使用额外的变量来引用日期两次

var date = AmCharts.stringToDate("2014-04-18 13:44:39", "YYYY-MM-DD JJ:NN:SS");
date.setHours(date.getHours() - 6);

var lineChartData = [{
    date: date,
    ambUp: 67.21,
    ambDown: 62.83,
    ext: 47.75,
    in : 44.15,
    out: 44.38,
    freeze: 23.45,
    fridge: 46.29,
    diff: 2.14,
    diff2: 0.2250
}];