javascript - OpenWeatherMap API 仅预测几天

Question

问题是当我获取 URL 来获取预测的 JSON 文件时，它给了我一个 40 对象的数组(每 3 小时预测一次，持续 5 天)，现在我只想显示每日预报，而非每 3 小时预报。

我怎样才能用 JavaScript 做到这一点？

数组:

{…}
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city: Object { id: 2643743, name: "London", country: "GB", … }
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cnt: 40
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cod: "200"
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list: (40) […]
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0: Object { dt: 1580148000, main: {…}, dt_txt: "2020-01-27 18:00:00", … }
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1: Object { dt: 1580158800, main: {…}, dt_txt: "2020-01-27 21:00:00", … }
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2: Object { dt: 1580169600, main: {…}, dt_txt: "2020-01-28 00:00:00", … }
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3: Object { dt: 1580180400, main: {…}, dt_txt: "2020-01-28 03:00:00", … }
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4: Object { dt: 1580191200, main: {…}, dt_txt: "2020-01-28 06:00:00", … }
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5: Object { dt: 1580202000, main: {…}, dt_txt: "2020-01-28 09:00:00", … }
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6: Object { dt: 1580212800, main: {…}, dt_txt: "2020-01-28 12:00:00", … }
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7: Object { dt: 1580223600, main: {…}, dt_txt: "2020-01-28 15:00:00", … }
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8: Object { dt: 1580234400, main: {…}, dt_txt: "2020-01-28 18:00:00", … }
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9: Object { dt: 1580245200, main: {…}, dt_txt: "2020-01-28 21:00:00", … }
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10: Object { dt: 1580256000, main: {…}, dt_txt: "2020-01-29 00:00:00", … }
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11: Object { dt: 1580266800, main: {…}, dt_txt: "2020-01-29 03:00:00", … }
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12: Object { dt: 1580277600, main: {…}, dt_txt: "2020-01-29 06:00:00", … }
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13: Object { dt: 1580288400, main: {…}, dt_txt: "2020-01-29 09:00:00", … }
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14: Object { dt: 1580299200, main: {…}, dt_txt: "2020-01-29 12:00:00", … }
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15: Object { dt: 1580310000, main: {…}, dt_txt: "2020-01-29 15:00:00", … }
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16: Object { dt: 1580320800, main: {…}, dt_txt: "2020-01-29 18:00:00", … }
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17: Object { dt: 1580331600, main: {…}, dt_txt: "2020-01-29 21:00:00", … }
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18: Object { dt: 1580342400, main: {…}, dt_txt: "2020-01-30 00:00:00", … }
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19: Object { dt: 1580353200, main: {…}, dt_txt: "2020-01-30 03:00:00", … }
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20: Object { dt: 1580364000, main: {…}, dt_txt: "2020-01-30 06:00:00", … }
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21: Object { dt: 1580374800, main: {…}, dt_txt: "2020-01-30 09:00:00", … }
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22: Object { dt: 1580385600, main: {…}, dt_txt: "2020-01-30 12:00:00", … }
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23: Object { dt: 1580396400, main: {…}, dt_txt: "2020-01-30 15:00:00", … }
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24: Object { dt: 1580407200, main: {…}, dt_txt: "2020-01-30 18:00:00", … }
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25: Object { dt: 1580418000, main: {…}, dt_txt: "2020-01-30 21:00:00", … }
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26: Object { dt: 1580428800, main: {…}, dt_txt: "2020-01-31 00:00:00", … }
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27: Object { dt: 1580439600, main: {…}, dt_txt: "2020-01-31 03:00:00", … }
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28: Object { dt: 1580450400, main: {…}, dt_txt: "2020-01-31 06:00:00", … }
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29: Object { dt: 1580461200, main: {…}, dt_txt: "2020-01-31 09:00:00", … }
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30: Object { dt: 1580472000, main: {…}, dt_txt: "2020-01-31 12:00:00", … }
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31: Object { dt: 1580482800, main: {…}, dt_txt: "2020-01-31 15:00:00", … }
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32: Object { dt: 1580493600, main: {…}, dt_txt: "2020-01-31 18:00:00", … }
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33: Object { dt: 1580504400, main: {…}, dt_txt: "2020-01-31 21:00:00", … }
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34: Object { dt: 1580515200, main: {…}, dt_txt: "2020-02-01 00:00:00", … }
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35: Object { dt: 1580526000, main: {…}, dt_txt: "2020-02-01 03:00:00", … }
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36: Object { dt: 1580536800, main: {…}, dt_txt: "2020-02-01 06:00:00", … }
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37: Object { dt: 1580547600, main: {…}, dt_txt: "2020-02-01 09:00:00", … }
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38: Object { dt: 1580558400, main: {…}, dt_txt: "2020-02-01 12:00:00", … }
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39: Object { dt: 1580569200, main: {…}, dt_txt: "2020-02-01 15:00:00", … }
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length: 40
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<prototype>: Array []
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message: 0
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<prototype>: Object { … }
weather.js:78:11

而且我需要它与用户获取数据的日期无关。

我使用的是 openweathermap 的免费版本。

Answer 1

那么您使用的 api 类型不正确。试试这个

api.openweathermap.org/data/2.5/forecast/daily?q=London&mode=xml&units=metric&cnt=7

link here