js中apply()方法

function.apply(thisArg, [argsArray])

// 借用方法示例
let obj1 = {
  value: 10,
  increment: function() {
    this.value++;
  }
};

let obj2 = {
  value: 0
};

obj1.increment.apply(obj2); // obj2.value 现在为 1

// 数组操作示例
let numbers = [1, 2, 3, 4, 5];
let max = Math.max.apply(null, numbers);
console.log(max); // 输出 5

// 函数柯里化示例
function sum(a, b) {
  return a + b;
}

function curry(fn) {
  return function curried(...args) {
    if (args.length >= fn.length) {
      return fn.apply(this, args);
    } else {
      return function(...args2) {
        return curried.apply(this, args.concat(args2));
      }
    }
  };
}

let curriedSum = curry(sum);
console.log(curriedSum(1)(2)); // 输出 3

// 使用扩展运算符代替 apply()
let max = Math.max(...numbers);

// 分批处理示例
function batchProcess(func, array, batchSize) {
  let result = [];
  for (let i = 0; i < array.length; i += batchSize) {
    let batch = array.slice(i, i + batchSize);
    result.push(func.apply(this, batch));
  }
  return result;
}

let sumResults = batchProcess(sum, numbers, 2); // 每次处理两个元素