"
1 /*
2 1.把函数作为参数、匿名函数作为参数传递到函数
3 */
4 function dogEat(food) {
5 console.log(""dog eat "" + food);
//代码效果参考： https://v.youku.com/v_show/id_XNjQwMDM2ODYzMg==.html
6 }
7
8 function catEat(food) {
9 console.log(""cat eat"" + food);
10 }
11
12 function eat(food, eatFunction) {
13 eatFunction(food);
14 }
15
16 eat(""bone"", dogEat);
17 eat(""fish"", catEat);
18 eat(""rice"", function(x) { console.log(""eat "" + x); })
19 /*
20 2.模拟实现类似onClick函数
21 */
22
23 var server = {
24 'successReq': ""req-success"",
25 'successRes': ""res-success"",
26 'failReq': ""req-faied"",
27 'failRes': ""res-faied"",
28 'onFunc': function(type, callback) {
29 switch (type) {
30 case 'success':
31 callback(this.successReq, this.successRes);
32 break;
33 case 'fail':
34 callback(this.failReq, this.failRes);
35 break;
36 default:
37 console.log(""No type match!"");
38 break;
39 }
40 }
41 };
42
43 var obj1 = Object.create(server);
44
45
46 function //代码效果参考：https://v.youku.com/v_show/id_XNjQwNjU1MDM2MA==.html
display(req, res) {47 console.log(""dis-req: "" + req + "" dis-res: "" + res);
48 }
49
50 obj1.onFunc(""success"", display); //$(""#button"").on('click',xxxFunc);模拟on函数
51
52 obj1.onFunc(""fail"", function(res, req) {
53 console.log(""failed: "" + res + req);
54 })
1 / 3.对象的某个属性是函数 /
2
3 obj对象的func属性指向匿名函数
4 var obj = {
5 func:function (){
6 console.log(""func"");
7 }
8 };
9
10 obj.func // 【Function】
11 obj.func() //调用函数，控制台打印 func
12
13 obj对象的func属性指向函数f
14 var obj = {
15 func:function f(){
16 console.log(""func"");
17 }
18 };
19
20 obj.func // 【Function: f】
21 obj.func() //调用函数，控制台打印 func
22
23 属性指向有名称的函数似乎没什么用……
"
