JavaScript Interview Questions & Answers
JavaScript Interview Online Test
1. what is the differene between java and java script?
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2. What are JavaScript types?
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3. How do you convert numbers between different bases in JavaScript?
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4. What does isNaN function do ?
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5. What is negative infinity?
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6. What boolean operators does JavaScript support?
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7. What does "1"+2+4 evaluate to?
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8. What looping structures are there in JavaScript?
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9. How do you create a new object in JavaScript?
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10. How do you assign object properties?
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11. whats a way to append a value to an array?
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12. What is this keyword?
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13. What is the main difference between Client side JavaScript and and Server side Java Script. How actually they run on both side with Example?
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14. What is JavaScript?
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15. What is JavaScript?
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16. whats relationship between JavaScript and ECMAScript?
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17. How do you submit a form using Javascript?
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18. How to detect the operating system on the client machine?
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19. How do you target a specific frame from a hyperlink?
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20. Where are cookies actually stored on the hard disk?
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21. What can javascript programs do?
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22. How to set a HTML document's background color?
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23. What does isNaN function do?
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24. In a pop-up browser window, how do you refer to the main browser window that opened it?
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25. What is the data type of variables of in JavaScript?
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26. Methods GET and POST in HTML forms - what's the difference?
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27. How to write a script for "Select" lists using javascript
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28. Text From Your Clipboard?
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29. What does the "Access is Denied" IE error mean?
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30. Is a javascript script faster than an ASP script?
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31. Are Java and JavaScript the Same?
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32. How to embed javascript in a web page?
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33. What and where are the best JavaScript resources on the Web?
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34. What is the difference between a web-garden and a web-farm?
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35. How to get the contents of an input box using Javascript?
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36. How to determine the state of a checkbox using Javascript?
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37. How to set the focus in an element using Javascript?
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38. How to access an external javascript file that is stored externally and not embedded?
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39. What is the difference between an alert box and a confirmation box?
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40. What is a prompt box?
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41. Can javascript code be broken in different lines?
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42. What Web sites do you feel use JavaScript most effectively (i.e., best-in-class examples)? The worst?
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43. How about 2+5+"8"?
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44. What is the difference between SessionState and ViewState?
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45. What does the EnableViewStateMac setting in an aspx page do?
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46. To put a "close window" link on a page ?
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47. How to hide javascript code from old browsers that dont run it?
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63. How to have the status line update when the mouse goes over a link (The support of the status line is sporadic)?