这些题~~

1.题1

var dlb = 1;
if(function a(){
    }){
    
	dlb += typeof a;
}
console.log(dlb)

2.题2

var abc = (
function f (){
    
	return "1";
},
function g (){
    
	return 2;
})();
console.log(abc);

3.题3

var def = [1,2];
function aa(param){
    
	param[0] = 100;
	//param = 100;
}
aa(def);
console.log(def);

4.题4（this指向问题）

var length = 10;
function fn(){
    
  console.log(this.length);
}
var obj = {
    
    length: 5,
    method: function(fn){
    
      fn();
       arguments[0]();
    }
};
obj.method(fn,1);

5.result的输入结果

const result = ['1', '2', '100'].map(parseInt);
console.log( result );