Question

我想重新映射一个JS数组。像这样的东西

var data = [
    {
        description: "bla",
        value: 234,
    }
    {
        description: "bla",
        value: 234,
    },
    {
        description: "bla",
        value: 234,
    },
    {
        description: "bla",
        value: 234,
    },
    {
        description: "bla",
        value: 234,
    }, 
]

应重新映射到2个单个数组。一个数组（descriptions）应包含所有描述值，另一个数组（values）应包含所有值。

我认为在JavaScript中有一个内置方法，但我不知道它是如何命名的。

Answer 1

我认为这就是你想要的：

var data = [{description:"bla",value:234},{description:"bla",value:234},{description:"bla",value:234},{description:"bla",value:234},{description:"bla",value:234}]
    .reduce((arr, x) => {
      arr.values.push(x.value)
      arr.descriptions.push(x.description)
      return arr
    }, { values: [], descriptions: [] })

    console.log(data)

Answer 2

“应重新映射到2个单个数组。一个数组（描述）应包含所有描述值，其他数组（值）应包含所有值。”

这是您想要的解决方案：

var data = [{description:"bla",value:234},{description:"bla",value:234},{description:"bla",value:234},{description:"bla",value:234},{description:"bla",value:234}],
    descriptions = [],
    values = [];

    data.forEach(function(v){
      descriptions.push(v.description);
      values.push(v.value);
    })

    console.log(descriptions);
    console.log(values);

Answer 3

var arrDescription = [];
var arrValue = [];

Object.keys(data).forEach(function(key) {
   //get the value of name
   //push the name string in the array
   arrDescription.push(data[key]["description"]);
   arrValue.push(data[key]["value"]);
});

重新映射JavaScript数组

3 个答案: