javascript - 如何调用 JavaScript 数组中定义的函数

Question

以下是我的代码，当我尝试控制台数组中定义的函数时，该代码抛出错误。让我知道我做错了什么。

var a = ['This is a string', {'name': 'Test User'}, 90, undefined, 'Another String', null, function(){return 'This is also valid'}];

for(var i=0; i<a.length; i++) {
  if(typeof a[i] === 'function')
    console.log(a[i]());
  else
    console.log(a[i]());
}

出现错误 -

TypeError: a[i] is not a function

Answer 1

从 else 中删除方法调用

for(var i=0; i<a.length; i++) {
  if(typeof a[i] === 'function')
    console.log(a[i]());
  else
    console.log(a[i]); //remove method call from here
}