How to use Array find method in javascript: expected undefined to equal '2015'

I am new to coding and currently learning javascript. I am trying to write a function that uses find() to return the year of superbowl win ("W"). This is the array object

const record = [
{ year: "2018", result: "N/A"},
{ year: "2017", result: "N/A"},
{ year: "2016", result: "N/A"},
{ year: "2015", result: "W"},
{ year: "2014", result: "N/A"},
{ year: "2013", result: "L"},
{ year: "2012", result: "N/A"},
{ year: "2011", result: "N/A"},
{ year: "2010", result: "N/A"},
{ year: "2009", result: "N/A"},
{ year: "2008", result: "N/A"},
{ year: "2007", result: "N/A"},
{ year: "2006", result: "N/A"},
{ year: "2005", result: "N/A"},
{ year: "2004", result: "N/A"},
{ year: "2003", result: "N/A"},
{ year: "2002", result: "N/A"},
{ year: "2001", result: "N/A"},
{ year: "2000", result: "N/A"},
{ year: "1999", result: "N/A"},
{ year: "1998", result: "W"},
{ year: "1997", result: "W"},
{ year: "1996", result: "N/A"},
{ year: "1995", result: "N/A"},
{ year: "1994", result: "N/A"},
{ year: "1993", result: "N/A"},
{ year: "1992", result: "N/A"},
{ year: "1991", result: "N/A"},
{ year: "1990", result: "N/A"},
{ year: "1989", result: "L"},
{ year: "1988", result: "N/A"},
{ year: "1987", result: "L"},
{ year: "1986", result: "L"},
{ year: "1985", result: "N/A"},
{ year: "1984", result: "N/A"},
{ year: "1983", result: "N/A"},
{ year: "1982", result: "N/A"},
{ year: "1981", result: "N/A"},
{ year: "1980", result: "N/A"},
{ year: "1979", result: "N/A"},
{ year: "1978", result: "N/A"},
{ year: "1977", result: "N/A"},
{ year: "1976", result: "L"},
{ year: "1975", result: "N/A"},
{ year: "1974", result: "N/A"},
{ year: "1973", result: "N/A"},
{ year: "1972", result: "N/A"},
{ year: "1971", result: "N/A"},
{ year: "1970", result: "N/A"},
{ year: "1969", result: "N/A"},
{ year: "1968", result: "N/A"},
{ year: "1967", result: "N/A"},
{ year: "1966", result: "N/A"},
{ year: "1965", result: "N/A"},
{ year: "1964", result: "N/A"},
{ year: "1963", result: "N/A"},
{ year: "1962", result: "N/A"},
{ year: "1961", result: "N/A"},
{ year: "1960", result: "N/A"}
]





function superbowlWin (element){
    if(element.result === "W"){
    const winYear = element.year
    return winYear;
    }
}





console.log(record.find(superbowlWin).year);`

My tests fail with the error below

superbowlWin(record)

1. returns a year the Denver Broncos won the superbowl
   ✓ returns undefined if the record has no win objects

1 passing (377ms)
1 failing

1. superbowlWin(record).
   returns a year the Denver Broncos won the superbowl.
   AssertionError: expected undefined to equal ‘2015’
   at Context. (test/indexTest.js:66:33)
   at processImmediate (internal/timers.js:461:21)

I was expecting the return winYear to equal 2015.

Any idea how to solve this?`

>Solution :

your problem is when there is no value for your find request. the return valu is undefind then you are trying to get the year of an undefined object.

try

    function superbowlWin(records){
        const winRecord = records.find(element => element.result === "W");
        return winRecord ? winRecord.year : undefined;
    }

console.log(superbowlWin(record));