Java笔试题目2附答案

1、Java笔试题目2JAVASCRIPT Interview Questions and Answer您的姓名： 填空题 *_电话号码： 填空题 *_1. Add embedded javacript in the blank, which will call “alert(here)”.Page Title 填空题 *_2. Add a javacript file “myjavascript.js” in the blank.Page Title填空题 *_3. Is JavaScript case sensitive? 填空题 *_4. What are the types used in

2、 JavaScript? 填空题 *_5. What are the boolean operators supported by JavaScript? 填空题 *_6. What is the difference between “=” and “=”? 填空题 *_7. How to access the value of the textbox in following html using JavaScript? Full name: 填空题 *_8. Fill in the blank to comment out the following lines:.is used for

3、 line comments.this isblock comment example.填空题 *_(答案：请设置答案)9. There is a checkbox in html file, the id of the checkbox is checkbox1. How will you get the Checkbox status whether it is checked or not? 填空题 *_10. Provide two examples of creating arrays in JavaScript. 填空题 *_11. If an array with name as

4、 names contain three elements, then how will you print the third element of this array? 填空题 *_12. There is only one form in the html document, How do you submit it using JavaScript? 填空题 *_13. What is the output of the following scripts? document.write(isNaN(Hello)+ );document.write(isNaN(2013/06/23)

5、+ );document.write(isNaN(123)+ );填空题 *_14. How to get the value of PI in JavaScript? 填空题 *_15. What is the output of following scripts? var obj = outerWidth : 20 ;function say() console.log(this.outerWidth);say(); say.apply(obj); 填空题 *_16. What does 1+2+4 evaluate to? 填空题 *_17. What does 3+4+7 evalu

6、ate to? 填空题 *_18. There is a label in the document, and the id of the label is “myText”. Provide javascripts to change the fontSize of the label to 20, and change the className to “anyclass”. 填空题 *_19. Create the man object, with following properties: name: Bill Gates , living: “ true”, age: 27. 填空题

7、 *_20. Add getName function to the above man object, which will display mans name in the console.log. 填空题 *_21. What is output of the following statements? var myString = new String(male);var myStringLiteral = male;console.log(myString.constructor, myStringLiteral.constructor);填空题 *_22. What will be

8、 the output of the following statements?var myString = Vikas / Create a primitive string object.var myStringCopy = myString; / Copy its value into a new variable.var myString = null; / Manipulate the valueconsole.log(myString, myStringCopy);填空题 *_23. Consider the following statements and tell what w

9、ould be the output of the logs statements? var price1 = 10;var price2 = 10;var price3 = new Number(10); / A complex numeric object because new was used.console.log(price1 = price2); console.log(price1 = price3);填空题 *_24. What would be the output of the following statements? var object1 = same: same

10、;var object2 = same: same ;console.log(object1 = object2);填空题 *_25. What would be the output of the following statements?var object1 = same: same ;var object2 = object1;console.log(object1 = object2);填空题 *_26. What is this? var myArray = ;填空题 *_27. Name any two JavaScript functions which are used to

11、 convert nonnumeric values into numbers? 填空题 *_28. What would be the output of the following statements?var s = 5;var a = s*1;var b = +s;console.log(typeof(s); console.log(typeof(a); console.log(typeof(b); 填空题 *_29. What would be the output of the following statements?var a = 1;function f() var b =

12、1;return a;console.log(f();console.log(b);填空题 *_30. What would be the output of the following statements?var a = global variable;var F = function () var b = local variable;var N = function () var c = inner local;return b;return N;var inner = F();inner();填空题 *_31. What would be the output of the foll

13、owing statements?function F() var arr = , i;for (i = 0; i 3; i+) arri = (function (x) return function () return x;(i);return arr;var arr = F();arr1();填空题 *_32. What would be the output of the following statements?function Gadget(name) = name;G = mirror;var toy = new Gad

14、get(camera);console.log();console.log(toy.hasOwnProperty(name);delete ;console.log();console.log(toy.hasOwnProperty(name);填空题 *_33. What would be the output of the following statements?function deepCopy(p, c) c = c | ;for (var i in p) if (p.hasOwnProperty(i) if (typeof pi = obje