Question

我有这样的json数据。我想要准确计算＆＃34;传递＆＃34;在我的json中的价值。

[{
    "Status1" : "pass",
    "Status2" : "Fail",
    "Status3" : "Ready"
},{
    "Status1" : "Fail",
    "Status2" : "pass",
    "Status3" : "Ready"
},{
    "Status1" : "pass",
    "Status2" : "Fail",
    "Status3" : "pass"
},{
    "Status1" : "pass",
    "Status2" : "Fail",
    "Status3" : "Ready"
}]

这是我想要失败的原因。

var count = 0;
for(var pass in json)
    if(json.hasOwnProperty(pass))
        count++;

Answer 1

您可以根据对象是否包含任何值为＆＃34; pass＆＃34;的属性来过滤对象。像这样：

＆＃13;

const data = [{
  "Status1" : "pass",
  "Status2" : "Fail",
  "Status3" : "Ready"
},{
  "Status1" : "Fail",
  "Status2" : "pass",
  "Status3" : "Ready"
},{
  "Status1" : "pass",
  "Status2" : "Fail",
  "Status3" : "pass"
},{
  "Status1" : "pass",
  "Status2" : "Fail",
  "Status3" : "Ready"
}]

const count = data.filter(obj => Object.keys(obj).some(key => {
  return obj[key] === 'pass'
})).length

console.log(count)

＆＃13;

有用的方法：

Answer 2

你非常接近：

var count = 0;
for(var obj of json)
  count += Object.values(obj).filter(k => k === "pass").length;

你需要遍历json数组中的所有对象，然后过滤它们的值以仅包含“pass”，计算它们（通过.length）并将它们相加（+ =）。

如果您不想获得总“通过”计数，但包含通过值的对象数量更容易：

var count = 0;
for(var obj of json)
  if(Object.values(obj).includes("pass")) count++;

ES5中的全部内容：

var count = 0;
for(var key in json)
  if(Object.keys(json[key]).filter(function(sub){return json[key][sub] === "pass";}).length) count++;

Answer 3

＆＃13;

const data = [{
  "Status1" : "pass",
  "Status2" : "Fail",
  "Status3" : "Ready"
},{
  "Status1" : "Fail",
  "Status2" : "pass",
  "Status3" : "Ready"
},{
  "Status1" : "pass",
  "Status2" : "Fail",
  "Status3" : "pass"
},{
  "Status1" : "pass",
  "Status2" : "Fail",
  "Status3" : "Ready"
}]

console.log(Object.keys(data).length);

＆＃13;

如何从json获取精确的值计数

3 个答案: