React Native

Append New Item to JSON Array

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Demonstrates the notations that can be used in a JSON array index to append to the end of an array. React Native

import { JsonObject } from '@chilkat/react-native'

function chilkatExample() {
  // Starting in Chilkat v9.5.0.77, the following notations are possible to specify that the value
  // should be appended to the end of the array. (In other words, if the array currenty has N elements, then "-1", "", or "*" 
  // indicate an index of N+1.

  const json = new JsonObject();

  json.updateInt('lanes[-1]', 0);
  json.updateInt('lanes[]', 1);
  json.updateInt('lanes[*]', 2);
  json.updateInt('lanes[-1]', 3);

  console.log(json.emit());

  // Output is:  {"lanes":[0,1,2,3]}
}