js set and get code example

Example 1: getters and setters javascript

let obj = {
  log: ['a', 'b', 'c'],
  get latest() {
    if (this.log.length === 0) {
      return undefined;
    }
    return this.log[this.log.length - 1];
  }
};

obj.log.push('d');
console.log(obj.latest); //output: 'd'

Example 2: set get javascript

var person = {
  language : "en",
  get lang() { return this.language; },
  set lang(lang) { this.language = lang; }
};
document.getElementById("demo").innerHTML = person.lang;
person.lang = "es";