how to get the number of the value in a object in typescript-CodePudding

I have a question about hot to get the number of a value in object with typescript. the object looks like this:

obj : TestObject = {
 name: "test",
 street: "test"
 subobj1: {
   status: warning,
   time: 11
   }
subobj2: {
   status: oki,
   time: 12
   }
subobj3: {
   status: warning,
   time: 13
   }
}


}

the TestObject is defined:

export interface TestObject {

 name: string,
 street: string,
 subobj1: SubObj1,
 subobj2: SubObj2

}

so I want to get the number of warning

I want to a method, which in this case returns 2 back.

how should the code look like?

CodePudding user response：

First convert the object to array of key and values using Object.entries then use filter for the condition, finally length of the values is the desired output!

let obj = {
  name: "test",
  street: "test",
  subobj1: {
    status: 'warning',
    time: 11
  },
  subobj2: {
    status: 'oki',
    time: 12
  },
  subobj3: {
    status: 'warning',
    time: 13
  },
}
console.log(Object.entries(obj).filter(([key, value]) => key.indexOf('subobj') > -1 ? value.status === 'warning' : false).length);

CodePudding user response：

let sum = 0;
for (const subobj in obj){
    sum  = obj[subobj].status == "warning" ? 1 : 0;
}

CodePudding user response：

let sum = 0;
Object.values(obj).forEach(value => {
    if(value.status == 'warning'){
        sum  = 1;
    }
});