Question

我有以下对象：

rating {
     atmosphere: 85
     cleanliness: 91
     facilities: 91
     staff: 85
     security: 94
     location: 78
     valueForMoney: 85
    }

如何获得所有属性值的平均值？

  $.each( json.rating, function( key, value) {
    console.log( key + ": " + value);

  });

Answer 1

没有jquery函数。你必须手动完成

var count = 0;
var sum = 0;
$.each(rating, function(k, v){
   count++;
   sum += v;
});

var average = sum / count;

Answer 2

您可以循环访问对象的属性以获取总值，然后将其除以对象本身中的数字或属性：

var total = 0;
for (var key in json.rating) {
    total += json.rating[key];
}
console.log(total / Object.keys(json.rating).length);

Working example

Answer 3

您发布的对象无效，我已将其修改为有效对象，这是一个工作代码段

＆＃13;

var json = {
  rating: {
    atmosphere: 85,
    cleanliness: 91,
    facilities: 91,
    staff: 85,
    security: 94,
    location: 78,
    valueForMoney: 85,
  }
}
var average = 0;
var counter = 0;

$.each(json.rating, function(key, value) {
  average += value;
  counter++;
});

document.write(average / counter);

＆＃13;

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>

＆＃13;

Answer 4

请看一下：

var rating  = {
     atmosphere: 85,
     cleanliness: 91,
     facilities: 91,
     staff: 85,
     security: 94,
     location: 78,
     valueForMoney: 85
    };

var totalCount = 0;
var totalSum = 0;
for(var key in rating){
  totalCount++;
  totalSum += rating[key];
}

$(".avg").text(totalSum/totalCount);

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.0/jquery.min.js"></script>
Average is: <div class="avg"></div>

Answer 5

您可以将值相加并除以属性的长度。

＆＃13;

var rating = { atmosphere: 85, cleanliness: 91, facilities: 91, staff: 85, security: 94, location: 78, valueForMoney: 85 },
    keys = Object.keys(rating),
    average = keys.reduce(function (r, k) {
        return r + rating[k];
    }, 0) / keys.length;

document.write(average);

＆＃13;

Answer 6

var tot = 0;
$.each( json.rating, function( key, value) {
    tot += value;
});
var avg = tot / Object.keys(json.rating).length

Answer 7

var sum = 0, len=1;

for (var key in rating) {
  sum += rating[key];
  len++;
}

var avg = sum / len;

jquery对象属性值平均值

7 个答案: