lovecoding
/
Web1020


			
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							<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <meta http-equiv="X-UA-Compatible" content="ie=edge">
  <title>Document</title>
</head>

<body>
  <script>
    //1、写出下列输出结果
    var x = 10;
    function test() {
      this.x = 20
      console.log(this.x)
    }
    test()


    //2、写出下列输出结果
    var name = "window"
    var obj = {
      name: "obj",
      func1: function () {
        console.log(this.name);
        (function () {
          console.log(this.name)
        })()
      }
    }
    obj.func1()


    //3、写出下列结果
    var name = "the window";

    var object = {
      name: "My Object",
      getName: function () {
        return this.name;
      }
    }

    console.log(object.getName());
    console.log((object.getName)());
    console.log((object.getName = object.getName)());

    //4、下列代码中当div的点击事件触发时输出的结果是？
    document.getElementById("div").onclick = function () {
      console.log(this)
    };


    //5、请写出下列代码运行结果
    var name = "window"
    var obj = {
      name: "obj"
    }
    window.setInterval(function () {
      console.log(this.name)
    }, 300)
    window.setInterval(function () {
      console.log(this.name)
    }.call(obj), 300)

    //6、请补全下列代码
    function foo() {
      //补全此处代码实现每隔一秒输出 hello world
    }
    window.setInterval(foo(), 1000);


    // 7、补全下列代码实现 1+2+3+4
    function add(c, d) {
      return this.a + this.b + c + d;
    }

    /*
      在此补全代码 以两种以上方法实现
    */


    //8、写出下列输出结果
    function f() {
      return this.a;
    }

    var g = f.bind({ a: "azerty" });
    console.log(g());

    var h = g.bind({ a: 'yoo' });
    console.log(h());

    var o = { a: 'loveCoding', f: f, g: g, h: h };
    console.log(o.f(), o.g(), o.h());


    //9、补全下列代码
    var o = { prop: 'loveCoding' };

    function independent() {
      return this.prop;
    }
    //在此补全代码
    console.log(o.f()); //  loveCoding

    //10、用call 或 apply 实现bind 方法
    function foo() {
      console.log(this.a)
    }
    var obj = {
      a: "hello"
    }


    var foo2 = foo.bind2(obj);
    foo2()
  </script>
</body>

</html>