How to Unmarshal JSON into a map[string]interface{} in Go

Use encoding/json.Unmarshal to decode JSON bytes into a map[string]interface{}.

import "encoding/json"

var data map[string]interface{}
err := json.Unmarshal(jsonBytes, &data)
if err != nil {
    // handle error
}

The jsonBytes variable must be of type []byte. The &data pointer allows Unmarshal to populate the map with the parsed JSON structure.

Unmarshaling JSON into a map[string]interface{} in Go converts a raw JSON string into a flexible map where keys are strings and values can be any type. This approach is useful when you receive JSON data with unknown or varying structures and need to inspect it dynamically. Think of it as turning a text document into a structured spreadsheet where you don't know the column headers in advance.