Salesforce CRT-600 問題集

質問 1：
Refer to the following code:

Which two statement could be inserted at line 17 to enable the function call on line 18?
Choose 2 answers
A. leo.roar = () => { console.log('They\'re pretty good!'); );
B. Object.assign (leo. Tiger);
C. leo.prototype.roar = ( ) =>( console.log('They\'re pretty good!'); };
D. Object.assign (leo, tony);
正解：A,D

質問 2：
developer wants to use a module named universalContainersLib and them call functions from it.
How should a developer import every function from the module and then call the fuctions foo and bar ?
A. import * from '/path/universalContaineraLib.js';
universalContainersLib.foo();
universalContainersLib.bar();
B. import all from '/path/universalContaineraLib.js';
universalContainersLib.foo();
universalContainersLib.bar();
C. import * ad lib from '/path/universalContainersLib.js';
lib.foo();
lib.bar();
D. import (foo, bar) from '/path/universalContainersLib.js';
foo();
bar();
正解：C

質問 3：
Given the code below:

Which method can be used to provide a visual representation of the list of users and to allow sorting by the name or email attribute?
A. console.info(usersList) ;
B. console.group(usersList) ;
C. console.groupCol lapsed (usersList) ;
D. console.table(usersList) ;
正解：B

質問 4：
Universal Containers (UC) just launched a new landing page, but users complain that the website is slow. A developer found some functions any that might cause this problem. To verify this, the developer decides to execute everything and log the time each of these three suspicious functions consumes.
Which function can the developer use to obtain the time spent by every one of the three functions?

A. console.timeStamp ()
B. console.trace()
C. console. timeLog ()
D. console.getTime ()
正解：C

質問 5：
Which javascript methods can be used to serialize an object into a string and deserialize a JSON string into an object, respectively?
A. JSON.parse and JSON.deserialize
B. JSON.encode and JSON.decode
C. JSON.serialize and JSON.deserialize
D. JSON.stringify and JSON.parse
正解：D

質問 6：
A developer creates a generic function to log custom messages in the console. To do this, the function below is implemented.
01 function logStatus(status){
02 console./*Answer goes here*/{'Item status is: %s', status};
03 }
Which three console logging methods allow the use of string substitution in line 02?
A. Message
B. Assert
C. Info
D. Error
E. Log
正解：C,D,E