Question 320464 in Javascript Question posted in
A very good W3school tutorial can be found here.

Is It possible to in some type of way make a variable in javascript have this —> var phone number = "(" + Array[1] + Array[2] + Array[3] ")"

this is my code

function createPhoneNumber(numbers)
{
  const phonelimit = [10]
  
  for(var i = 0; i < 10; i++)
    { 
      var j = i + 1
      if (i == 9)
        {
          j -= 10
          
        }
      phonelimit[i] = j
      
      
    }
   var phoneNumber = "(" + phonelimit[0] + phonelimit[1] + phonelimit[2] + ") " + phonelimit[3] + phonelimit[4] + phonelimit[5] + "-" + phonelimit[6] + phonelimit[7] + phonelimit[8] + phonelimit[9])
   return phoneNumber
}

my problem is that i am using a site called codehs for my highschool Java + javascript

and it only will allow me to submit it if it outputed using a return not a causal console.log

so some how i need to put all this junk that makes the phone number string into a variable then return the variable

I tried to do multiple toString() methods to create the whole format of the phone number thing with the numbers one variable but they didn’t work

while trying to use console.log

Tags:

2

Answers


  1. Chosen as BEST ANSWER
    0

    I fixed this by using the numbers variable and instead of j, I used the variable numbers and changed how the variable is returned

    function createPhoneNumber(numbers) 
{ const phonelimit = [10]; 
 for (var i = 0; i < 10; i++)
    { 
      phonelimit[i] = numbers[i]; 
    }  
 numbers = `(${phonelimit[0]}${phonelimit[1]}${phonelimit[2]}) 
 ${phonelimit[3]}${phonelimit[4]}${phonelimit[5]}-${phonelimit[6]}
 ${phonelimit[7]}${phonelimit[8]}${phonelimit[9]}`; 
 return numbers;
}

  2. 0

    Following OP’s own answer the task seems to have been about formatting a telephone number. OP’s answer seems to have fulfilled their requirements, although some parts seem questionable. For example, what is const phonelimit = [10] expected to do? Yes, it simply creates an array with a single element of value 10.

    The following snippet will do the job in a slightly shorter way:

    function createPhoneNumber(numbers){
 return numbers.replace(/(...)(...)(.{1,4}).*/,"($1) $2-$3")
}

// testing:
console.log(["0123456789","02468101214","9876541","123"].map(createPhoneNumber));

    The question did not specify the min or max numbers of digits the phone number is expected to have. The above presente function createPhoneNumber() expects at least 7 digits and will ignore any digit after the tenth. This can, of course, be adjusted to requirements by changing the regular expression.

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