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驗證非商業用途資格，才能繼續存取 Earth Engine。
ee.Date.getInfo
透過集合功能整理內容
你可以依據偏好儲存及分類內容。
從伺服器擷取這個物件的值。
如果未提供任何回呼函式，系統會同步發出要求。如果提供回呼，系統會以非同步方式發出要求。
建議使用非同步模式，因為同步模式會在等待伺服器時停止所有其他程式碼 (例如 EE 程式碼編輯器使用者介面)。如要發出非同步要求，建議使用 evaluate()，而非 getInfo()。
傳回這個物件的計算值。
| 用量 | 傳回 |
|---|
Date.getInfo(callback) | 物件 |
| 引數 | 類型 | 詳細資料 |
|---|
這個：computedobject | ComputedObject | ComputedObject 例項。 |
callback | 函式 (選用) | 選用回呼。如未提供，系統會同步發出呼叫。 |
範例
程式碼編輯器 (JavaScript)
/**
* WARNING: this function transfers data from Earth Engine servers to the
* client. Doing so can negatively affect request processing and client
* performance. Server-side options should be used whenever possible.
* Learn more about the distinction between server and client:
* https://developers.google.com/earth-engine/guides/client_server
*/
// A server-side ee.Date object.
var dateServer = ee.Date('2021-4-30');
// Use getInfo to transfer server-side date to the client. The result is
// an object with keys "type" and "value" where "value" is milliseconds since
// Unix epoch.
var dateClient = dateServer.getInfo();
print('Client-side date is an object', typeof dateClient);
print('Object keys include "type" and "value"', Object.keys(dateClient));
print('"value" is milliseconds since Unix epoch', dateClient.value);
print('Client-side date in JS Date constructor', new Date(dateClient.value));
Python 設定
請參閱
Python 環境頁面，瞭解 Python API 和如何使用 geemap 進行互動式開發。
import ee
import geemap.core as geemap
Colab (Python)
"""
WARNING: this function transfers data from Earth Engine servers to the
client. Doing so can negatively affect request processing and client
performance. Server-side options should be used whenever possible.
Learn more about the distinction between server and client:
https://developers.google.com/earth-engine/guides/client_server
"""
from datetime import datetime
# A server-side ee.Date object.
date_server = ee.Date('2021-4-30')
# Use getInfo to transfer server-side date to the client. The result is
# a dictionary with keys "type" and "value" where "value" is milliseconds since
# Unix epoch.
date_client = date_server.getInfo()
print('Client-side date is a dictionary:', type(date_client))
print('Dictionary keys include "type" and "value":', date_client.keys())
print('"value" is milliseconds since Unix epoch:', date_client['value'])
print('Client-side date in Python:',
datetime.fromtimestamp(date_client['value'] / 1000))
除非另有註明，否則本頁面中的內容是採用創用 CC 姓名標示 4.0 授權，程式碼範例則為阿帕契 2.0 授權。詳情請參閱《Google Developers 網站政策》。Java 是 Oracle 和/或其關聯企業的註冊商標。
上次更新時間：2025-07-26 (世界標準時間)。
[null,null,["上次更新時間：2025-07-26 (世界標準時間)。"],[[["\u003cp\u003e\u003ccode\u003egetInfo()\u003c/code\u003e retrieves the value of a server-side ComputedObject (like ee.Date) and transfers it to the client.\u003c/p\u003e\n"],["\u003cp\u003eIt returns an object containing the computed value, with synchronous or asynchronous behavior depending on the presence of a callback function.\u003c/p\u003e\n"],["\u003cp\u003eAsynchronous requests, typically made with \u003ccode\u003eevaluate()\u003c/code\u003e, are preferred to avoid blocking other code execution.\u003c/p\u003e\n"],["\u003cp\u003eThe returned object, when dealing with dates, contains \u003ccode\u003etype\u003c/code\u003e and \u003ccode\u003evalue\u003c/code\u003e keys, where \u003ccode\u003evalue\u003c/code\u003e represents milliseconds since the Unix epoch.\u003c/p\u003e\n"],["\u003cp\u003eWhile \u003ccode\u003egetInfo()\u003c/code\u003e facilitates client-side data interaction, server-side operations are generally recommended for better performance and efficiency.\u003c/p\u003e\n"]]],["`getInfo()` retrieves a ComputedObject's value from the server. It can operate synchronously (no callback) or asynchronously (with a callback), the latter being preferred. It returns the object's computed value. For example a Date.getInfo() call will return an object with 'type' and 'value' keys. The value is in miliseconds since the Unix epoch. The function should be used carefully, as it transfers data from Earth Engine servers to the client.\n"],null,["# ee.Date.getInfo\n\n\u003cbr /\u003e\n\nRetrieves the value of this object from the server.\n\n\u003cbr /\u003e\n\nIf no callback function is provided, the request is made synchronously. If a callback is provided, the request is made asynchronously.\n\nThe asynchronous mode is preferred because the synchronous mode stops all other code (for example, the EE Code Editor UI) while waiting for the server. To make an asynchronous request, evaluate() is preferred over getInfo().\n\nReturns the computed value of this object.\n\n| Usage | Returns |\n|------------------------------|---------|\n| Date.getInfo`(`*callback*`)` | Object |\n\n| Argument | Type | Details |\n|------------------------|--------------------|------------------------------------------------------------------------|\n| this: `computedobject` | ComputedObject | The ComputedObject instance. |\n| `callback` | Function, optional | An optional callback. If not supplied, the call is made synchronously. |\n\nExamples\n--------\n\n### Code Editor (JavaScript)\n\n```javascript\n/**\n * WARNING: this function transfers data from Earth Engine servers to the\n * client. Doing so can negatively affect request processing and client\n * performance. Server-side options should be used whenever possible.\n * Learn more about the distinction between server and client:\n * https://developers.google.com/earth-engine/guides/client_server\n */\n\n// A server-side ee.Date object.\nvar dateServer = ee.Date('2021-4-30');\n\n// Use getInfo to transfer server-side date to the client. The result is\n// an object with keys \"type\" and \"value\" where \"value\" is milliseconds since\n// Unix epoch.\nvar dateClient = dateServer.getInfo();\nprint('Client-side date is an object', typeof dateClient);\nprint('Object keys include \"type\" and \"value\"', Object.keys(dateClient));\nprint('\"value\" is milliseconds since Unix epoch', dateClient.value);\nprint('Client-side date in JS Date constructor', new Date(dateClient.value));\n```\nPython setup\n\nSee the [Python Environment](/earth-engine/guides/python_install) page for information on the Python API and using\n`geemap` for interactive development. \n\n```python\nimport ee\nimport geemap.core as geemap\n```\n\n### Colab (Python)\n\n```python\n\"\"\"\nWARNING: this function transfers data from Earth Engine servers to the\nclient. Doing so can negatively affect request processing and client\nperformance. Server-side options should be used whenever possible.\nLearn more about the distinction between server and client:\nhttps://developers.google.com/earth-engine/guides/client_server\n\"\"\"\nfrom datetime import datetime\n\n# A server-side ee.Date object.\ndate_server = ee.Date('2021-4-30')\n\n# Use getInfo to transfer server-side date to the client. The result is\n# a dictionary with keys \"type\" and \"value\" where \"value\" is milliseconds since\n# Unix epoch.\ndate_client = date_server.getInfo()\nprint('Client-side date is a dictionary:', type(date_client))\nprint('Dictionary keys include \"type\" and \"value\":', date_client.keys())\nprint('\"value\" is milliseconds since Unix epoch:', date_client['value'])\nprint('Client-side date in Python:',\n datetime.fromtimestamp(date_client['value'] / 1000))\n```"]]
