MCQOPTIONS
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MCQOPTIONS
This section includes 87 Mcqs, each offering curated multiple-choice questions to sharpen your Javascript knowledge and support exam preparation. Choose a topic below to get started.
| 51. |
_ How do you specifically execute a command in JavaScript?$? |
| A. | execcommand() |
| B. | exec(command) |
| C. | execCommand() |
| D. | exec(command id) |
| Answer» D. exec(command id) | |
| 52. |
_ Which of the following attribute of form tag is not set by using document object in JavaScript?$? |
| A. | Target |
| B. | Enctype |
| C. | Action |
| D. | None of the mentioned |
| Answer» E. | |
| 53. |
_ How to calculate the run time of a code?$? |
| A. | Start time – End time |
| B. | End time – Start time |
| C. | Start time/ End time |
| D. | Start time * End time |
| Answer» C. Start time/ End time | |
| 54. |
_ What is the purpose of the UgilifyJS?$? |
| A. | Exposes a simple API |
| B. | Minification |
| C. | Both Exposes a simple API and Minification |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 55. |
_ What is the return type of the method parseInt()?$? |
| A. | String |
| B. | Float |
| C. | Integer |
| D. | Date |
| Answer» D. Date | |
| 56. |
_ What is the purpose of the property width belonging to the ImageData element?$? |
| A. | Number of data |
| B. | Number of pixels |
| C. | Number of pixels per row of data |
| D. | All of the mentioned |
| Answer» D. All of the mentioned | |
| 57. |
_ What will happen if the fvonly parameter is set to 1?$? |
| A. | Results got for the first view |
| B. | Can run the repeat view test |
| C. | Can run the repeat view test |
| D. | None of the mentioned |
| Answer» B. Can run the repeat view test | |
| 58. |
_What will be the radix value if the string begins with 0x?$? |
| A. | 13 |
| B. | 14 |
| C. | 15 |
| D. | 16 |
| Answer» E. | |
| 59. |
_What is the purpose of the url json?$? |
| A. | Belongs to JSON object |
| B. | Reference JSON formatted data |
| C. | Belongs to JSON |
| D. | None of the mentioned |
| Answer» C. Belongs to JSON | |
| 60. |
_Which of the following method will wait for certain milliseconds to execute a specified method?$? |
| A. | setInterval() |
| B. | setTimeout() |
| C. | setmilli() |
| D. | setseconds() |
| Answer» B. setTimeout() | |
| 61. |
_What is the significance of the JavaScript logging library log4javascript?$? |
| A. | Fully featured |
| B. | Easy to use |
| C. | Fully featured and Easy to use |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 62. |
_Which is the method used to process on the input’s post data before it is saved to the database?$? |
| A. | prep() |
| B. | settings() |
| C. | defineSettings() |
| D. | prepSettings() |
| Answer» E. | |
| 63. |
_How many events does the BaseFieldType provide?$? |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 4 |
| Answer» D. 4 | |
| 64. |
_How can you dispatch a synthetic event object?$? |
| A. | dispatchEvent() |
| B. | dispatch() |
| C. | dispatch(Event) |
| D. | None of the mentioned |
| Answer» B. dispatch() | |
| 65. |
_Which function is used to start the time logging?$? |
| A. | startTimeLogging() |
| B. | start() |
| C. | Loggingstart() |
| D. | startLogging() |
| Answer» B. start() | |
| 66. |
_Which of the following are ways to benchmark code?$? |
| A. | Timing the code |
| B. | Calculating the number of operations performed |
| C. | Timing the code & Calculating the number of operations performed |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 67. |
_Which of the following is a JavaScript Compressor?$? |
| A. | Esprima |
| B. | UgilifyJS |
| C. | Acron |
| D. | None of the mentioned |
| Answer» C. Acron | |
| 68. |
_What is the purpose of the method JSON.parse()?$? |
| A. | Parses a string to integer |
| B. | Parses a string to JSON |
| C. | Parses a string from JSON to JSON2 |
| D. | None of the mentioned |
| Answer» C. Parses a string from JSON to JSON2 | |
| 69. |
_What is the return data type of the property accept that belongs to the Input element?$? |
| A. | integer |
| B. | string |
| C. | boolean |
| D. | float |
| Answer» C. boolean | |
| 70. |
What is the purpose of the parameter location?$? |
| A. | Specifies agent location |
| B. | Specifies speed |
| C. | Specifies browser |
| D. | All of the mentioned |
| Answer» E. | |
| 71. |
What will happen if the radix parameter of the parseInt() function is omitted? |
| A. | Runs in assumption |
| B. | Throws exception |
| C. | Aborts |
| D. | Taken as 0 |
| Answer» B. Throws exception | |
| 72. |
What is the purpose of the method ActiveXObject()? |
| A. | Used to call automation object |
| B. | Used to reference automation object |
| C. | Used to instantiate automation object |
| D. | All of the mentioned |
| Answer» D. All of the mentioned | |
| 73. |
Which of the following browsers support the usage of the JavaScript logging library log4javascript? |
| A. | IE |
| B. | Safari |
| C. | Opera |
| D. | All of the mentioned |
| Answer» E. | |
| 74. |
How many arguments does the getInputHtml() accept? |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 4 |
| Answer» C. 3 | |
| 75. |
When does the defineContentAttribute() method return a false? |
| A. | Data stored in different table |
| B. | Data stored in its own table |
| C. | Data is not stored at all |
| D. | Data is not obtained |
| Answer» C. Data is not stored at all | |
| 76. |
What kind of an exception will be thrown if the string to parse is not valid JSON? |
| A. | SyntaxError |
| B. | ArrayOutOfBoundException |
| C. | Both SyntaxError and ArrayOutOfBoundException |
| D. | None of the mentioned |
| Answer» B. ArrayOutOfBoundException | |
| 77. |
What will be the radix value of the parseInt() method when the string begins with 0? |
| A. | 6 |
| B. | 7 |
| C. | 8 |
| D. | 9 |
| Answer» D. 9 | |
| 78. |
To which of the following object does the print() method belong to? |
| A. | window |
| B. | document |
| C. | hash |
| D. | none of the mentioned |
| Answer» B. document | |
| 79. |
What is the purpose of the window.location object in JavaScript? |
| A. | Get the URL and redirect |
| B. | Get the location of the cursor |
| C. | Get the path to the next page |
| D. | All of the mentioned |
| Answer» B. Get the location of the cursor | |
| 80. |
What is the significance of the JavaScript logging library loglevel? |
| A. | Lightweight |
| B. | Unreliable |
| C. | Minimal usage |
| D. | Inconvenient |
| Answer» B. Unreliable | |
| 81. |
What does the getInputHtml() return? |
| A. | Input |
| B. | Fieldtype’s input HTML |
| C. | Array |
| D. | Value |
| Answer» C. Array | |
| 82. |
What is the purpose of the parameter $value? |
| A. | Field’s expected value |
| B. | Field’s previous value |
| C. | Field’s current value |
| D. | Field’s probability value |
| Answer» D. Field‚Äö√Ñ√¥s probability value | |
| 83. |
What is the function of the method importNode()? |
| A. | Copies without removing |
| B. | Copies and removes |
| C. | Only copies |
| D. | Only removes |
| Answer» B. Copies and removes | |
| 84. |
Which of the following object is used to post the data to an external process, say savePerfData? |
| A. | XML |
| B. | XBT |
| C. | XHR |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 85. |
What will be the radix value of the parseInt() method when the string begins with any other value other than 0x and 0? |
| A. | 8 |
| B. | 9 |
| C. | 10 |
| D. | 11 |
| Answer» D. 11 | |
| 86. |
What is the purpose of the radix parameter in the parseInt() method? |
| A. | Numeral system not to be used |
| B. | Numeral system to be used |
| C. | Convertion mode |
| D. | None of the mentioned |
| Answer» C. Convertion mode | |
| 87. |
What is the necessity to create a separate file after having an API key? |
| A. | To hold configuration information |
| B. | To hold key details |
| C. | To hold URL details |
| D. | To hold the speed of the process |
| Answer» B. To hold key details | |