Longest Common Prefix LeetCode

Longest Common Prefix LeetCode.js

/** Initial Hypothesis
 * @param {string[]} strs
 * @return {string}
 */
var longestCommonPrefix = function(strs) {
    let splitWords = [];
    let commonPrefix =[];
    strs.forEach((word,i) =>{
        splitWords[i] = word.split('');
    })
    if( splitWords !== undefined || splitWords.length > 0){
    for(i=0; i < splitWords[0].length; i ++){
        if(splitWords[0][i] ==  splitWords[1][i] &&  splitWords[0][i] == splitWords[2][i]){
        
        commonPrefix.push(splitWords[0][i])
            console.log(commonPrefix)
         }else{
           break;
         }
        }
       }
  return (commonPrefix === undefined || commonPrefix.length == 0 ? commonPrefix = "" : commonPrefix.join(''))
};