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Version: 8.1


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)