Using VBA-JSON to Retrieve Values by Key-Array from Wiktionary
In this article, we will explore how to use the VBA-JSON library to retrieve values by key-array from Wiktionary. We will cover the key concepts related to this topic, including JSON data structure, parsing JSON data using VBA, and accessing the values using a key-array. The article will be divided into subtitles for better context and understanding.
What is JSON Data Structure?
- A collection of name/value pairs. In various languages, this is realized as an object, record, struct, dictionary, hash table, keyed list, or associative array.
- An ordered list of values. In most languages, this is realized as an array, vector, list, or sequence.
Parsing JSON Data using VBA
To parse JSON data using VBA, we need to use a third-party library called VBA-JSON. This library provides a set of functions that can be used to parse JSON data and access the values. Here are the steps to parse JSON data using VBA-JSON:
- Download the VBA-JSON library from https://github.com/VBA-tools/VBA-JSON.
- Add the VBA-JSON library to your VBA project by going to Tools > References in the VBA editor.
- Create a variable of type ScriptControl and set it to the JSON data.
- Use the JSON data to access the values by key-array.
Accessing Values using Key-Array
Once we have parsed the JSON data using VBA-JSON, we can access the values using a key-array. Here is an example of how to retrieve a value by key-array:
In this example, we are accessing the value at the following path:
Example: Retrieving Values from Wiktionary
Let's say we want to retrieve the pronunciation of the word "hello" from Wiktionary. Here is an example of how to do this using VBA-JSON:
")
Dim pronunciation As String
pronunciation = Mid(value, startPos, endPos - startPos)
]]>
In this example, we are using the Wiktionary API to retrieve the content of the page for the word "hello". We are then parsing the JSON data using VBA-JSON and extracting the pronunciation by searching for the <sound> tag in the content.
- JSON is a lightweight data-interchange format that is easy for humans to read and write and easy for machines to parse and generate.
- VBA-JSON is a third-party library that provides a set of functions to parse JSON data and access the values.
- To access values using a key-array, we can use the following syntax: jsonData("key1")("key2")(1).
- By using the Wiktionary API and VBA-JSON, we can retrieve the pronunciation of a word from Wiktionary.