greeter Smart Contract

greeter.js

contract greeter {
    /* Define variable greeting of the type string */
    string greeting;
    
    /* This runs when the contract is executed */
    function greeter(string _greeting) public {
        greeting = _greeting;
    }

    /* Main function */
    function greet() constant returns (string) {
        return greeting;
    }

    /* Update greeting */
    function newGreeting(string _greeting) public returns (string) {
        greeting = _greeting;
        return greeting;
    }
}