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- Question
What is the difference between "==" and "==="?
- Correct Answer
- "==" checks equality only, "===" checks for equality as well as the type
- 1. What does isNaN function do? Discuss
- 2. What is mean by "this" keyword in javascript?
Options- A. It refers current object
- B. It referes previous object
- C. It is variable which contains value
- D. None of the above Discuss
- 3. Which of the following navigator object properties is the same in both Netscape and IE?
Options- A. navigator.appCodeName
- B. navigator.appName
- C. navigator.appVersion
- D. None of the above Discuss
- 4. Which of the following is added to prefs.js,when open a dialog box each time an error occurs?
Options- A. user_pref("javascript.classic.error_alerts", true);
- B. user_pref("javascript.classic.error_alerts ", false);
- C. user_pref("javascript.console.open_on_error ", false);
- D. user_pref("javascript.console.open_on_error ", true); Discuss
- 5. What does window.history object? Discuss
- 6. What are the new features provided in HTML5? Discuss
- 7. Differentiate between Canvas and SVG. Discuss
- 8. What is SVG? Discuss
- 9. What is a Canvas? Discuss
- 10. What is HTML5 Web Storage? Discuss
Technology problems
Search Results
Correct Answer: It Return true if the argument is not a number
Correct Answer: It refers current object
Correct Answer: navigator.appCodeName
Correct Answer: user_pref("javascript.classic.error_alerts", true);
Correct Answer: The windowhistory object can be written without the window prefix To protect the privacy of the users, there are limitations to how JavaScript can access this object Some methods: historyback() - same as clicking back in the browser historyforward() - same as clicking forward in the browser
Correct Answer: Some of the new features provided in HTML5 are: - It provides support for local storage - New form controls, like calendar, date, time, email, url, search -
Correct Answer: Some important differences between Canvas and SVG: - Canvas is resolution dependent while SVG is not - Canvas does not provide any support for event handlers while SVG does - Canvas is suitable for graphic-intensive games while SVG is not suitable for gaming - Canvas is suitable for small rendering areas while SVG is suitable for large rendering areas like Google maps
Correct Answer: - SVG is the abbreviation for Scalable Vector Graphics and is recommended by W3C - It is used to define vector-based graphics for the Web - The graphics are defined in XML format -An important quality of SVG graphics is that their quality is maintained even when they are zoomed or resized - All the element and attributes of SVG files can be animated
Correct Answer: Canvas is a rectangular area on a HTML page, specified with the tag
Correct Answer: With HTML5, it is possible for the web pages to store the data locally in the user's browser This web storage is much faster and secured than the cookies Also, a larger amount of data can be stored without causing any adverse effect to the performance of the website The data here is not included with every server request It is used ONLY when it is asked for It is only that particular web page that can access the data stored by itself
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