如何根据匹配的对象键获得平均值 [代码]

Question

I have a array of object and I need to get the result based on few condition. if Object.Keys() matches and type is integer, return average of those values. if Object.keys() matches and type is string, return value with how many times it has appeared.

I have added the expectedResult at the bottom, have tried some methods but finding it hard to get the desired result.

looking forward to some helpful answers. thx

 let data = [{ baySize: {type: "integer", value: "180"}, bayAge: {type: "integer", value: "20"}, totalBays: {type: "integer", value: "30"}, bayType: {type: "string", value: "Brown"}, sprayed: {type: "boolean", value: "No"} }, { baySize: {type: "integer", value: "120"}, bayAge: {type: "integer", value: "30"}, totalBays: {type: "integer", value: "30"}, bayType: {type: "string", value: "Grey"}, sprayed: {type: "boolean", value: "No"} }] const result = data.map((item) => { const intType = Object.keys(item).map((values) => { return item[values].type == "integer" ? item[values].value : 0 }) const stringType = Object.keys(item).map((values) => { return item[values].type == "string" ? item[values].value : 0 }) console.log(intType) console.log(stringType) }) let expectedResult = [{ baySize: {type: "integer", value: "300"}, bayAge: {type: "integer", value: "50"}, totalBays: {type: "integer", value: "60"}, bayType: {type: "string", value: "brown (1), Grey(1)"} }]

Answer 1

let data = [{
        baySize: {
            type: "integer",
            value: "180"
        },
        bayAge: {
            type: "integer",
            value: "20"
        },
        totalBays: {
            type: "integer",
            value: "30"
        },
        bayType: {
            type: "string",
            value: "Brown"
        },
        sprayed: {
            type: "boolean",
            value: "No"
        }
    },
    {
        baySize: {
            type: "integer",
            value: "120"
        },
        bayAge: {
            type: "integer",
            value: "30"
        },
        totalBays: {
            type: "integer",
            value: "30"
        },
        bayType: {
            type: "string",
            value: "Grey"
        },
        sprayed: {
            type: "boolean",
            value: "No"
        }
    }
]
const intResult = {}
const strResult = {}
data.forEach(item => {
    Object.keys(item).forEach(key => {
        const innerItem = item[key]
        if (innerItem.type === 'integer') {
            if (!intResult.hasOwnProperty(key)) {
                intResult[key] = {
                    count: 1,
                    value: +innerItem.value
                }
            } else {
                intResult[key].count++
                intResult[key].value += (+innerItem.value)
            }
        } else {
            if (!strResult.hasOwnProperty(key)) {
                strResult[key] = {}
            }
            if (!strResult[key].hasOwnProperty(innerItem.value)) {
                strResult[key][innerItem.value] = 1
            } else {
                strResult[key][innerItem.value]++
            }

        }
    })
})
const resultObj = {}
Object.keys(intResult).forEach(key => {
    resultObj[key] = {
        type: 'integer',
        value: intResult[key].value / intResult[key].count + ''
    }
})

Object.keys(strResult).forEach(key => {
    let value = ''
    Object.keys(strResult[key]).forEach(subKey => {
        value += `${subKey}(${strResult[key][subKey]})`
    })
    resultObj[key] = {
        type: 'string',
        value
    }
})
console.log(resultObj)