jsonSet

This function is used by Ignition's Expression language.

Description

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.

Syntax

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.

Examples

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)