找到布尔值的总和JavaScript对象数组

Hi i am trying to find the sum of Boolean values in the object array in JavaScript

您好我试图在JavaScript中找到对象数组中的布尔值的总和

My json like be

我的json喜欢

var myoBj = [{
  "id": 1,
  "day": 1,
  "status": true
}, {
  "id": 2,
  "day": 1,
  "status": false
}, {
  "id": 3,
  "day": 1,
  "status": false
}, {
  "id": 4,
  "day": 3,
  "status": false
}];

i want the sum of all status values using reduce function in JavaScript/ typescript

我希望使用JavaScript / typescript中的reduce函数来计算所有状态值的总和

i want to show overall status as true only when all status are true else it should be false

我希望只有当所有状态都为真时才显示整体状态为真,否则它应该为假

2 个解决方案

#1

var result = myObj.reduce((sum, next) => sum && next.status, true);

This should return true, if every value is true.

如果每个值都为真,则返回true。

#2

If you want to sum lets say, day items value depending on the status flag, this can looks like:

如果你想总结,可以说,日期项目值取决于状态标志,这可能看起来像:

var result = myObj.reduce((res, item) => item.status ? res + item.day : res, 0);

Update 1

For overall status in case of all statuses are true you should use every method:

对于所有状态均为true的整体状态,您应该使用每种方法:

var result = myObj.every(item => item.status);