JScall，apply，bind

Posted 2021-10-14 码小余の博客

【JS】call，apply，bind

const steven = {
    name: "Steven",
    phoneBattery: 70,
    charge: function (level) {
      this.phoneBattery = level
    }
}

const becky = {
  name: "Becky",
  phoneBattery: 30,
}

steven.charge(100)
console.log(steven);

// steven 的充电宝给 becky 用，并充电到 100
// steven.charge.call(becky, 100)
// console.log(becky);

// steven 的充电宝给 becky 用，不过不是立即充电，而是稍后再充
var beckyCharge = steven.charge.bind(becky)
// 将 becky 的手机充电到 100
beckyCharge(100)
console.log(becky);