This function is used by Ignition's Expression language.


Takes a JSON-friendly string, a path string, and value, and will return a new JSON-friendly string with the provided path set to the provided value. This is best used in conjunction with the Derived Tags writeback value.


 jsonSet(json, path, value)

  • Parameters

String json - The JSON string. The string must be in a JSON friendly format.

String path - The path string.

Object value - The replacement for the value at the path.

  • Results

String - A JSON-friendly string with a new value set at the specified path.

Code Snippet
// This example takes a JSON friendly string and sets the provided path to the given value. This would then return the string {'item':{'firstThing':1, 'secondThing':5}}.
jsonSet("{'item':{'firstThing':1, 'secondThing':2}}", "item.secondThing", 5)
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