CODE EXAMPLE FOR JAVASCRIPT

solidity events

// Solidity program to demonstrate
// creating an event
pragma solidity ^0.4.21;

// Creating a contract
contract eventExample {

	// Declaring state variables
	uint256 public value = 0;

	// Declaring an event
	event Increment(address owner);

	// Defining a function for logging event
	function getValue(uint _a, uint _b) public {
		emit Increment(msg.sender);
		value = _a + _b;
	}
}