CODEWITHSUNDEEP
javascript
plaidshirt
plaidshirt

Reputation: 5671

TypeError: Cannot read property 'length' of null

I should write a function that removes vowels from a string. I get an error message about null value. After several tries for fixing it, the message is this same, but I tried to filter null values.

TypeError: Cannot read property 'length' of null at getCount at Test.it at Test.describe at Object.exports.runInThisContext

function getCount(str) {
  var vowelsCount = 0;

  if (str && str.length){
    vowelsCount=str.match(/[aeiou]/gi).length;
  } else {
    vowelsCount=0;
  }

  return vowelsCount;
}

describe("Case 1", function(){
    it ("should be defined", function(){
        Test.assertEquals(getCount("abracadabra"), 5)
    });
});

Upvotes: 0

Views: 4493

Answers (1)

river
river

Reputation: 814

Maybe like this ?

function getCount(str) {
  var vowelsCount = 0;

  if (str && str.length){
    var m = str.match(/[aeiou]/gi)
    if (m) return m.length;
  } else {
    vowelsCount=0;
  }

  return vowelsCount;
}

describe("Case 1", function(){
    it ("should be defined", function(){
        Test.assertEquals(getCount("abracadabra"), 5)
    });
});

Upvotes: 2

Related Questions