Check word score in a string

// Capital letter - 1
// small letter - 2
// number - 3
// spl char - 4

let str  = "l. lorem ip 123";

let str1 = "skdfh skdfh alsjdhf KJHGH24 ksdhfksfh";


let arrayStr = str1.split(" ");
let obj = {}

function checkCase(ch) {
    if (!isNaN(ch * 1)){
       return 3;
    } else if (ch === ch.toUpperCase()) {
       return 1;
    } else if (ch === ch.toLowerCase()){
       return 2;
    } else {
        return 4
    }
}

function checkScoreofString(arrayStr) {
    let newString = "";
    for(let i=0; i<arrayStr.length; i++) {
        let splittedString = arrayStr[i].split("");
        let countWord = 0;
        for(let j=0; j<splittedString.length; j++) {
            countWord += checkCase(splittedString[j])
        }
        countWord > 10  ? newString += arrayStr[i] + " " : '';
        console.log(newString)
    }
}