如何比较两个javascript数组并计算差异

Question

我正在研究一个exerciseism.io，并且找不到比较两个javascript数组并计算差异的可靠答案。这是一个可行的例子。我希望它能帮助未来的人！

Answer 1

var DNA = function(input){ 
    this.input = input; 

    this.hammingDistance = function(letters){ 
    var split_input = input.split(''), 
    split_letters = letters.split(''), 
    length = Math.min(input.length, letters.length), 
    countNotMatched = 0; 

    for (var i = 0; i < length; i++){ 
     if (split_letters[i] !== split_input[i]){ 
     countNotMatched = countNotMatched + 1; 
     } 
    } 
    return countNotMatched; 
    }; 
};