in JavaScript by
Q:

Which one of the following codes is correct for concatenating the strings passed into the function?

A. Code 1

functionconcatenate()  

{  

returnString.prototype.concat('', arguments);  

}  

B. Code 2

functionconcatenate()  

{  

returnString.prototype.concat.apply('', arguments);  

}  

C. Code 3

functionconcatenate()  

{  

returnString.prototype.apply('', arguments);  

}  

D. Code 4

functionconcatenate()  

{  

returnString.concat.apply('', arguments);  

}  

► Click here to show 1 Answer

0 votes
by

Answer: B

Reason: The "concat()" method is a predefined method of the JavaScript which is used for joining the two or more arrays. The significant advantage of using this method is instead of making changes in the existing array it returns a newly created array. The ".apply" method is also predefined method just like the" concat()", and it takes arrays of arguments and consider the every element of that array as an individual argument.

JavaScript
Learn More with Madanswer

Related questions

0 votes
asked Mar 21 in JavaScript by rajeshsharma
...