leetcode(数组) — JavaScript — 统计一个数字在排序数组中出现的次数

var findNums = function (nums, target){
    res = 0;
    while (nums.indexOf(target)!=-1){
        res++;
        nums.splice(nums.indexOf(target),1)
    }
    return res;
}

console.log(findNums([5,7,7,8,8,8], 6));