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Join array items into a single string with a custom separator
Details
Join array items into a single string using a custom separator.
Highlights:
Example:
["a", "b", "c"]-a-b-cExecution
Fill in the form, run the tool, and review the result in one place.
Samples
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Tool usage guide
The Join Array tool converts a JSON array into a single string by inserting a custom separator between each element. It handles various data types by converting objects and nested arrays to JSON strings before joining, making it ideal for data formatting and text output tasks.
Background
You have an array of product names from a database query and need to display them as a single string in a summary report.
Problem
Manually joining array elements is inefficient and prone to errors with large datasets.
How to use
Paste the array ["Laptop", "Mouse", "Keyboard"] into the 'Array' field and leave the separator as the default.
Outcome
The output is "Laptop, Mouse, Keyboard", ready for insertion into the report.
Background
You have an array of user objects from an API response and want to log them in a compact, readable format for debugging.
Problem
Logging raw arrays can be cluttered; joining with a separator improves log clarity.
How to use
Input the array [{"id": 1, "name": "Alice"}, {"id": 2, "name": "Bob"}] and set the separator to " | ".
{"separator": " | "}Outcome
The array must be in valid JSON format, like ["value1", "value2"].
Yes, the separator can be any string, including special characters or an empty string for direct concatenation.
Non-string elements are converted to strings; objects and arrays are JSON-stringified before joining.
The tool supports arrays of typical sizes, but very large arrays may affect performance.
The default separator is a comma followed by a space (", ").
The output is "{\"id\": 1, \"name\": \"Alice\"} | {\"id\": 2, \"name\": \"Bob\"}", making logs easier to parse.