编辑代码

function maxOccurChar(text) {
    var arr = [...text]
    var cnt = []
    console.log(arr)
    for (var i in arr) {
        if (cnt[arr[i]] >= 1) {
            cnt[arr[i]] += 1
        }
        else{
            cnt[arr[i]] = 1
        }
    }
    console.log(cnt)

    var max = 0
    var maxchar;
    for(var j in cnt){
        if (cnt[j]>max){
            max = cnt[j]
            maxchar = j
        }
    }

    console.log(max,maxchar)

}


var text = "sample string";
maxOccurChar(text)