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35 lines
1.1 KiB
Plaintext
35 lines
1.1 KiB
Plaintext
created: 20220427174702859
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modified: 20220611104737314
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tags: [[JSON in TiddlyWiki]] Learning
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title: Reading data from JSON tiddlers
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type: text/vnd.tiddlywiki
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See [[JSON in TiddlyWiki]] for an overview of using JSON in TiddlyWiki.
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!! Filter Operators for Accessing JSON Data
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The following filter operators allow values to be read from JSON data:
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* <<.olink jsonget>> to retrieve the values of a property in JSON data
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* <<.olink jsontype>> to retrieve the type of a JSON value
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* <<.olink jsonindexes>> to retrieve the names of the fields of a JSON object, or the indexes of a JSON array
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* <<.olink jsonextract>> to retrieve a JSON value as a string of JSON
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!! Text References for Accessing JSON Data
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[[Text references|TextReference]] are a simple shortcut syntax to look up the value of a named property. For example, if a [[DictionaryTiddler|DictionaryTiddlers]] called `MonthDays` contains:
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```
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oct:31
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nov:30
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dec:31
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```
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... then `{{MonthDays##nov}}` will resolve to the value `30`.
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The same is true if `MonthDays` is a [[JSONTiddler|JSONTiddlers]] with the following content:
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```
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{"oct":31,"nov":30,"dec":31}
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```
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