JS 自动生成闭包函数

Posted 2022-07-15 码小余の博客

function f (num) 
  var str = ''
  var params = []
  for (var i = 0; i < num; i++) 
    var param = String.fromCharCode(i + 97)
    params.push(param)
    if (i == num - 1) 
      str += `($param) => $params.join(' + ')`
     else 
      str += `($param) => `
    
  

  var res = new Function('return ' + str)

  return res()

var fn = f(20)
var res = fn
  (1)
  (2)
  (3)
  (4)
  (5)
  (6)
  (7)
  (8)
  (9)
  (10)
  (11)
  (12)
  (13)
  (14)
  (15)
  (16)
  (17)
  (18)
  (19)
  (20)
console.log(res);

纯属娱乐，切勿在真实项目中使用~