js 如何将未知数量的对象合并成一个对象？

Question

后台返回数组如下，并且数量未知，有时候一个 有时候多个

[
    {
        "nitriteConcentration": 100
    }, 
    {
        "siConcentration": 100
    },
    {
        "num": 100
    },
    {
        "name":"cdfdf"
    }
]

想要实现，不管后台返回的数组里面有多少个对象都合并成

[
    {
        "nitriteConcentration": 100, 
        "siConcentration": 100, 
        "num": 100, 
        "name": "cdfdf"
    }
]

Answer 1

[Object.assign(...[
    {
        "nitriteConcentration": 100
    }, 
    {
        "siConcentration": 100
    },
    {
        "num": 100
    },
    {
        "name":"cdfdf"
    }
])]

结果

[
  {
    "nitriteConcentration": 100,
    "siConcentration": 100,
    "num": 100,
    "name": "cdfdf"
  }
]

Answer 2

for+Object.assign咯

let list = [
    {
        "nitriteConcentration": 100
    }, 
    {
        "siConcentration": 100
    },
    {
        "num": 100
    },
    {
        "name":"cdfdf"
    }
]

let result = list.reduce((a,b)=>{
    return Object.assign(a,b);
}, {})