Javascript期末考试及答案

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JavaScript试题

一、选择题

1、写“Hello World”的正确javascript语法是?()

A. document.write("Hello World")

B. "Hello World"

C. response.write("Hello World")

D. ("Hello World")

2、JavaScript使用()来分隔两条语句

A.分号

B.逗号

C.括号

D.句号

3、下列JavaScript的判断语句中( )是正确的

A.if(i==0)

B.if(i=0)

C.if i==0 then

D.if i=0 then

4、下列JavaScript的循环语句中( )是正确的

A.if(i<10;i++)

B.for(i=0;i<10)

C.for i=1 to 10

D.for(i=0;i<=10;i++)

5、下列的哪一个表达式将返回假()

A.!(3<1)

B.(4>=4)

C.(“c”!=”d”)

D.(2<3)&&(3<2)

6、以下不属于鼠标事件的是()

A.onclick

B.onmouseover

C.onload

D.onmouseout

7、Math.abs(52)的结果是:()

A.51 B.52 C.-52 D.50

8、以下JavaScript语句

var a1=10;

var a2=20;

alert(“a1+a2=”+a1+a2)

将显示( )结果

A.a1+a2=30

B.a1+a2=1020

C.a1+a2=a1+a2

D.a1+a2=+10+20

9、将字串s中的所有字母变为小写字母的方法是()

A.s.toSmallCase()

B.s.toLowerCase()

C.s.toUpperCase()

D.s.toUpperChars()

10、以下( )表达式产生一个0~7之间(含0,7)的随机整数.

A.Math.floor(Math.random()*6)

B.Math.floor(Math.random()*7)

C.Math. floor(Math.random()*8)

D.Math.ceil(Math.random()*8)

11、不能使用在标签“

”中的属性是()

A.action

C.type

D.id

12、标签“”可以通过哪个属性来改变元素的类型()

A.action

C.type

D.id

13、某网页中有一个窗体对象,其名称是mainForm,该窗体对象的第一个元素是按钮,其名称是myButton,表述该按钮对象的方法是()

A.document.forms[0].myButton

B.document.mainForm.myButton

C.document.forms[0].element[0]

D.以上都可以

14、HTML文档的树状结构中,()标签为文档的根节点,位于结构中的最顶层。

A.

B.

C.

D.</p><p>15、表达式125%4的结果是()</p><p>A.0</p><p>B.1</p><p>C.2</p><p>D.3</p><p>16、在JavaScript中最常用的显示提示或警告信息方法是()</p><p>A.document.clear()</p><p>B. window.alert(s)</p><p>C. msgBox(s)</p><p>D. alter(s)</p><p>17、HMTL表单的首要标记是<form>,<form>标记的参数method表示表单发送的方法,可能为get或post,下列关于get和post的描述正确的是()</p><p>A.post方法传递的数据对客户端是不可见的</p><p>B.get请求信息以查询字符串的形式发送,查询字符串长度没有大小限制</p><p>C.post方法对发送数据的数量限制在255个字符之内</p><p>D.get方法传递的数据对客户端是不可见的</p><p>18、以下哪个不是Window对象产生的?()</p><p>A.提示框 B.确认框 C.标题栏 D.警示框</p><p>19、JavaScript函数SetTimeOut(”countA()”,1000)的作用是()</p><p>A.每隔1分钟调用一次countA()函数 B. 每隔1秒钟调用一次countA()函数</p><p>C. 1分钟后调用countA()函数</p><p>D. 1秒钟后调用countA()函数</p><p>20、在Javascript中要改变页面文档的背景色,需要修改document对象的()属性。A.BackColor B.BackgroundColor C.BgColor D.Background</p><p>21、在HTML页面中,不能与onChange事件处理程序相关联的表单元素有()</p><p>A.文本框 B.复选框 C.列表框 D.按钮</p><p>22、在HTML页面上编写Javascript代码时,应编写在()标签中间。</p><p>A.<javascript>和</javascript></p><p>B.<script>和</script></p><p>C. <head>和</head></p><p>D. 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