Struggling with eliminating a string from a JavaScript array

Question

Struggling with eliminating a string from a JavaScript array

I can't seem to figure out the next steps. I've managed to remove all the duplicate numbers from the code, but now I need to also eliminate the strings without converting them to numbers. I'm feeling a bit stuck on how to move forward...

let arr = [ 10, 44, 55 ,66 , 77 , 55 , 44 , 3 , 3 , 3 , 4 , 5 , 6 , 54 , "henry", "33", "£", "66"]
let uniqueValues = {};
function getUniqueValues(arr){
    return arr.filter(function(value, index){
        return arr.indexOf(value) >= index;
    });
};
getUniqueValues(arr)

javascript arrays string

Answer 1

Answer №1

Verify the type of variable x by using typeof x

Answer 2

Verify the type of variable x by using typeof x

Answer 3

Answer №2

If you're looking to utilize the power of typeof in JavaScript, here's an example:

var arr = [
  10, 44, 55, 66, 77, 55, 44,
  3, 3, 3, 4, 5, 6, 54,
  "henry", "33", "£", "66"
]
var max = {};

function checkIfBigger(arr) {
  return arr.filter(function(item, index) {
    return typeof item == 'number' && arr.indexOf(item) >= index;
  });
};
console.log(checkIfBigger(arr))

Don't forget to watch out for a few typos that may have slipped into your code:

Make sure your array is properly closed.
Check if you've included the opening curly brace for the function checkIfBigger.

Answer 4

If you're looking to utilize the power of typeof in JavaScript, here's an example:

var arr = [
  10, 44, 55, 66, 77, 55, 44,
  3, 3, 3, 4, 5, 6, 54,
  "henry", "33", "£", "66"
]
var max = {};

function checkIfBigger(arr) {
  return arr.filter(function(item, index) {
    return typeof item == 'number' && arr.indexOf(item) >= index;
  });
};
console.log(checkIfBigger(arr))

Don't forget to watch out for a few typos that may have slipped into your code:

Make sure your array is properly closed.
Check if you've included the opening curly brace for the function checkIfBigger.

Struggling with eliminating a string from a JavaScript array

Answer №1

Answer №2

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