在javascript中，执行后输出的结果是： var name="zhaonan"; var obj1={ name:"miao", age:20, say:function(){ console.log(this.name); } } var obj2={ name:"xue", age:30, say:function(){ console.log(this.name); } } var f=obj2.say; console.log(f()); var e=f.bind(obj1); console.log(e()); var k=e.bind(obj2); console.log(k());
A: zhaonan zhaonan miao
B: zhaonan miao miao
C: zhaonan miao xue
D: miao zhaonan xue
A: zhaonan zhaonan miao
B: zhaonan miao miao
C: zhaonan miao xue
D: miao zhaonan xue
B
举一反三
- 在 javascript 中,执行后输出的结果是():var name="zhaonan";var obj1={name:"miao",age:20,say:function(){console.log(http://www.wendangku.net/doc/3446003cbc234 82fb4daa58da0116c175e0e1e54.html);}}var obj2={name:"xue",age:30,say:function(){console.log(http://www.wendangku.net/doc/3446003cbc234 82fb4daa58da0116c175e0e1e54.html);}}var f=obj2.say; console.log(f());var e=f.bind(obj1);console.log(e());var k=e.bind(obj2);console.log(k()); A: zhaonan zhaonan miao B: zhaonan miao miao C: zhaonan miao xue D: miao zhaonan xue
- 以下能够创建一个对象的是（ ）。 A: var obj=new Object( ) ; B: var obj=function(name){this.name=name ; }<br> var p1=new obj( "张三" ) ; C: var obj={ name : "张三" ; } D: var obj=Object.create( { name: "张三" } ) ;
- 如下代码在控制台打印结果为： var obj = {1 : 1}; var arr = [1,1]; console.log(obj + arr); A: 1 B: 2 C: [object Object]1,1 D: 1,1[object Object]
- var a = 10; { var a = 100; console.log(a)//(1) } console.log(a)//(2)
- var a = 10; function test() { console.log(a); var a = 100; console.log(a); } test(); console.log(a);
内容
- 0
指出代码输出的各个结果： console.log(test); function test(test){ console.log(test); var test=234; console.log(test); function test(){} } test(1); var test=123;
- 1
以下代码输出的结果是：（）。 var length = 20; function fn() { console.log(this.length); } var obj = { length: 10, method: function(fn) { fn(); arguments[0](); } }; obj.method(fn, 1,"aa"); A: 20,10 B: 10,3 C: 20,3 D: 以上都不正确
- 2
写出以下程序的执行结果为（ ）function test() {console.log(a);var a = 1;console.log(a);console.log(hello)}tset();
- 3
var a=1 function sum(b) console.log(a) a+=2 sum(a) console.log(a)此程序的最终结果为（ ）。
- 4
function a(x) { return x * 2; } var a=1; console.log(a); 执行以上代码的结果是