How to Return Array Item in Google Apps Script

Описание: Discover how to search through arrays in Google Apps Script and return specific items based on criteria!
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This video is based on the question https://stackoverflow.com/q/70626071/ asked by the user 'Bob Hardball' ( https://stackoverflow.com/u/13151877/ ) and on the answer https://stackoverflow.com/a/70626146/ provided by the user 'Juan Cruz Carrau' ( https://stackoverflow.com/u/13262535/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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How to Return Array Item in Google Apps Script

Working with arrays in Google Apps Script can sometimes be tricky, especially when you need to retrieve specific items based on certain criteria. An example of this is when you want to search for an email address that starts with a specific name and return it as a variable. In this guide, we’ll tackle this common challenge and show you how to efficiently find and return an item from an array.

The Problem

Imagine you have a list of email addresses, and you want to find an email address that starts with a particular name. For instance, you have a variable named name set to “alain”, and you want to search through an array of email addresses to find the one that begins with this name. Here’s the setup:

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Your goal is to receive the email address that starts with “alain” for further use in your script.

The Solution

To achieve this, you can use the find method in JavaScript. This method enables you to search through an array and return the first element that satisfies the provided testing function.

Step-by-Step Explanation

Using the find Method: The find method executes a callback function on each element of the array until it finds one where the callback returns true. If such an element is found, it returns that element; otherwise, it returns undefined.

Creating the Callback Function: You can create a callback function that checks if the current element starts with the specified name using startsWith() method.

Combining It All: In one simple line, you can write your array search query.

Code Implementation

Here’s how you can implement this in your Google Apps Script:

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Explanation of the Code

arr.find(...): This calls the find method on your array arr.

element => element.startsWith(name): This is an arrow function that takes each element of the array and checks if it starts with the string in the variable name.

Result

After executing this line of code, the variable address will hold the value "[email protected]" if it exists in the array. You can then use this address variable in other parts of your script as needed.

Conclusion

Finding and returning an item from an array in Google Apps Script is straightforward once you understand how to use the find method effectively. By following the steps outlined above, you can search for items that meet specific criteria with ease. Next time you need to retrieve items from an array, remember this simple yet powerful approach!

If you have any further questions or need assistance with Google Apps Script, feel free to reach out!