• 2022-07-24 问题

    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" } ) ;

    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" } ) ;

  • 2022-06-07 问题

    以下语句是正确的变量声明语句的是()。 A: var name = "张三" ; B: var null = 123 ; C: var name = "张三",age = 18 ; D: var name , age ;

    以下语句是正确的变量声明语句的是()。 A: var name = "张三" ; B: var null = 123 ; C: var name = "张三",age = 18 ; D: var name , age ;

  • 2022-06-08 问题

    以下关于字符串变量的声明不正确的是? A: var myText = "my name is zhangsan"; B: var myText = 'my name is zhangsan'; C: var myText = 'my name is zhangsan"; D: var myText = "my name is\t zhangsan";

    以下关于字符串变量的声明不正确的是? A: var myText = "my name is zhangsan"; B: var myText = 'my name is zhangsan'; C: var myText = 'my name is zhangsan"; D: var myText = "my name is\t zhangsan";

  • 2022-05-28 问题

    下列方法中,能正确创建 JavaScript 对象的是( )。 A: var txt = new Object[name:"George",price:25] B: var txt = new Object(name:"George",price:25) C: var txt = new Object{name:"George",price:25} D: var txt = new Object({name:"George",price:25})

    下列方法中,能正确创建 JavaScript 对象的是( )。 A: var txt = new Object[name:"George",price:25] B: var txt = new Object(name:"George",price:25) C: var txt = new Object{name:"George",price:25} D: var txt = new Object({name:"George",price:25})

  • 2022-05-28 问题

    下列方法中,能正确创建 JavaScript 对象的是( )。 A: var txt = new Object[name:&quot;George&quot;,price:25] B: var txt = new Object(name:&quot;George&quot;,price:25) C: var txt = new Object{name:&quot;George&quot;,price:25} D: var txt = new Object({name:&quot;George&quot;,price:25})

    下列方法中,能正确创建 JavaScript 对象的是( )。 A: var txt = new Object[name:&quot;George&quot;,price:25] B: var txt = new Object(name:&quot;George&quot;,price:25) C: var txt = new Object{name:&quot;George&quot;,price:25} D: var txt = new Object({name:&quot;George&quot;,price:25})

  • 2022-06-15 问题

    下列JavaScript定义对象的语句中,()不正确。 A: var person = {}; B: var person = new Object(); C: person =name; D: function person(name,sex){} var personObj = new person();

    下列JavaScript定义对象的语句中,()不正确。 A: var person = {}; B: var person = new Object(); C: person =name; D: function person(name,sex){} var personObj = new person();

  • 2022-06-16 问题

    var arr = new Array(); var arr&#91;2&#93;="name"; alert(arr)的结果是什么

    var arr = new Array(); var arr&#91;2&#93;="name"; alert(arr)的结果是什么

  • 2021-04-14 问题

    var bool=elem.hasAttribute("name")的含义是

    var bool=elem.hasAttribute("name")的含义是

  • 2022-05-26 问题

    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

    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

  • 2022-06-29 问题

    下面四个变量声明语句,哪一个变量的命名是正确的? A: var true B: var my_name C: var my name D: var 2cat

    下面四个变量声明语句,哪一个变量的命名是正确的? A: var true B: var my_name C: var my name D: var 2cat

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