Dateオブジェクトの最大値・最小値最小値> dt = new Date(-8640000000000000) -271821-04-20T00:00:00.000Z > dt = new Date(-8640000000000001) Invalid Date > dt = Date.parse("-271821-04-20T00:00:00.000Z") -8640000000000000 > dt = Date.parse("-271821-04-19T00:00:00.000Z") NaN
最大値> dt = new Date(864000000000000) +029349-01-26T00:00:00.000Z > dt = Date.parse("+029349-01-26T00:00:00.000Z") 864000000000000
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