javascript item splice self out of list

Question

If I have an array of objects is there any way possible for the item to splice itself out of the array that contains it?

For example: If a bad guy dies he will splice hi

Answer 1

You can also use an object and instead of splice, delete the enemy:

var activeEnemies = {};

function Enemy() {
  this.id = Enemy.getId(); // function to return unique id
  activeEnemies[this.id] = this;
  // ....
}

Enemy.getId = (function() {
  var count = 0;
  return function() {
    return 'enemyNumber' + count++;
  }
}());

Enemy.prototype.exterminate = function() {
  // do tidy up
  delete activeEnemies[this.id];
}

Enemy.prototype.showId = function() {
  console.log(this.id);
}

Enemy.prototype.showEnemies = function() {
  var enemyList = [];
  for (var enemy in activeEnemies) {
    if (activeEnemies.hasOwnProperty(enemy)) {
      enemyList.push(enemy);
    }
  }
  return enemyList.join('\n');
}

var e0 = new Enemy();
var e1 = new Enemy();

console.log( Enemy.prototype.showEnemies() ); // enemyNumber0
                                              // enemyNumber1

e0.exterminate();

console.log( Enemy.prototype.showEnemies() ); // enemyNumber1