[[["容易理解","easyToUnderstand","thumb-up"],["確實解決了我的問題","solvedMyProblem","thumb-up"],["其他","otherUp","thumb-up"]],[["缺少我需要的資訊","missingTheInformationINeed","thumb-down"],["過於複雜/步驟過多","tooComplicatedTooManySteps","thumb-down"],["過時","outOfDate","thumb-down"],["翻譯問題","translationIssue","thumb-down"],["示例/程式碼問題","samplesCodeIssue","thumb-down"],["其他","otherDown","thumb-down"]],["上次更新時間：2025-08-04 (世界標準時間)。"],[[["\u003cp\u003eGoogle Apps Script allows you to create custom functions that can be used directly within Google Sheets, similar to built-in functions.\u003c/p\u003e\n"],["\u003cp\u003eThis tutorial demonstrates how to build a custom function that calculates and formats sale prices based on provided input and discount values.\u003c/p\u003e\n"],["\u003cp\u003eTo use the custom function, simply paste the provided code into the Apps Script editor linked within your Google Sheet and call it using \u003ccode\u003e=salePrice(input, discount)\u003c/code\u003e in any cell.\u003c/p\u003e\n"]]],[],null,["You can use Google Apps Script to write a custom function, then use it in\nGoogle Sheets just like a built-in function.\n\nThe following quickstart sample creates a custom function that calculates the\nsale price of discounted items. The sale price is formatted as US dollars.\n\nObjectives\n\n- Set up the script.\n- Run the script.\n\nPrerequisites\n\nTo use this sample, you need the following prerequisites:\n\n- A Google Account (Google Workspace accounts might require administrator approval).\n- A web browser with access to the internet.\n\nSet up the script\n\n1. Create a [new\n spreadsheet](https://sheets.google.com/create).\n2. From within your new spreadsheet, select the menu item **Extensions** \\\u003e **Apps Script**.\n3. Delete any code in the script editor and paste in the code below. Then\n click Save .\n\n ```scilab\n /**\n * Calculates the sale price of a value at a given discount.\n * The sale price is formatted as US dollars.\n *\n * @param {number} input The value to discount.\n * @param {number} discount The discount to apply, such as .5 or 50%.\n * @return The sale price formatted as USD.\n * @customfunction\n */\n function salePrice(input, discount) {\n let price = input - (input * discount);\n let dollarUS = Intl.NumberFormat(\"en-US\", {\n style: \"currency\",\n currency: \"USD\",\n });\n return dollarUS.format(price);\n }\n ```\n\nRun the script\n\n1. Switch back to your spreadsheet.\n2. In a cell, enter `=salePrice(100,.2)`. The first parameter represents the original price and the second parameter represents the discount percentage. If you're in a location that uses decimal commas, you might need to enter `=salePrice(100;0,2)` instead.\n\nThe formula that you enter in the cell runs the function in the\nscript you created in the previous section. The function results in a sale\nprice of `$80.00`.\n\nNext steps\n\nTo continue learning about how to extend Sheets with\nApps Script, take a\nlook at the following resources:\n\n- [Spreadsheet custom functions](/apps-script/execution_custom_functions)\n- [Custom menus in Google Workspace](/apps-script/guides/menus)\n- [Extend Google Sheets](/apps-script/guides/sheets)"]]
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