我有一个长这样的对象:
{
"1": "Technology",
"2": "Startup",
"3": "IT",
}
我需要将它转换为一个对象数组,该数组应如下所示:
[
{id: 1, name: "Technology"},
{id: 2, name: "Startup"},
{id: 3, name: "IT"}
]
如何最清洁和高效地完成此操作?
我有一个长这样的对象:
{
"1": "Technology",
"2": "Startup",
"3": "IT",
}
我需要将它转换为一个对象数组,该数组应如下所示:
[
{id: 1, name: "Technology"},
{id: 2, name: "Startup"},
{id: 3, name: "IT"}
]
如何最清洁和高效地完成此操作?
.map()
与 Object.keys()
:
let data = {
"1": "Technology",
"2": "Startup",
"3": "IT",
};
let result = Object.keys(data)
.map(key => ({id: Number(key), name: data[key]}));
console.log(result);
有用的资源:
obj
:Object.keys(obj).reduce((acc, curr) => {
return [...acc, { id: curr, name: obj[curr] }]
}, [])
现在你可以使用Object.entries()
将一个对象转换为键值对数组(也存储为数组)。
这使我们能够利用数组解构,因此我们可以将其变成一个漂亮的一行代码:
const obj = {
"1": "Technology",
"2": "Startup",
"3": "IT",
};
const result = Object.entries(obj).map(([id, name]) => ({id: +id, name}));
console.log(result);
添加一个一元加号(+
)将id(字符串)转换为数字。
平凡的方法
var o = {
"1": "Technology",
"2": "Startup",
"3": "IT",
};
var arr = [];
for(var i in o) {
arr.push({
id: i,
number: o[i]
});
};
const words = {
told: 64,
mistake: 11,
thought: 16,
bad: 17
}
const results = []
Object.entries(words).map(val => results.push({
text: val[0],
value: val[1]
}))
console.log(results)
.forEach()
代替。 - zhulien