js将对象转成多个子数组

Posted 2022-12-09 不想掉头发啊！！

方法一、常规for循环

// 对象 res = [lat: 23.080585479736328, lon: 23.080585479736328, value: "0.1",…]
 // 存储对象转数组
      let arr1 = [];
      // 存储数组分割成子数组
      let arr2 = [];
      // 将对象转换为数组
      for (let i in res) 
        for (let j in res[i]) 
          arr1.push(res[i][j]);
        
        //结果： arr1= [23.080585479736328,23.080585479736328,0.1,....]
      // 将数组分割成三个为一组的子数组
      for (let z = 0; z < arr1.length; z += 3) 
        arr2.push(arr1.slice(z, z + 3));
      
      //结果： arr2 = [[23.080585479736328,23.080585479736328,0.1],[...],[...]]

方法二、利用map、Object.values（）

const res = [
    
        lat: 23.080585479736328,
        lon: 23.080585479736328,
        value: "0.1"
    ,
    
        lat: 23.080585479736328,
        lon: 23.080585479736328,
        value: "0.2"
    ,
    
        lat: 23.080585479736328,
        lon: 23.080585479736328,
        value: "0.6"
    
]

const newRes = res.map(item => 
    return Object.values(item)
)

console.log(newRes)
// [[23.080585479736328,23.080585479736328,"0.1"],[23.080585479736328,23.080585479736328,"0.2"],[23.080585479736328,23.080585479736328,"0.6"]]