Question

我有一些json数据，看起来像：

[{
"key": "Jan",
  "value": "400"
}, {
  "key": "Apr",
  "value": "500"
}, {
  "key": "Aug",
  "value": "24058.635"
}, {
  "key": "Sep",
  "value": "2160"
}, {
  "key": "Nov",
  "value": "115425"
}, {
  "key": "Dec",
  "value": "32570"
}]

我需要将其转换为类似于

的键值对数组

[
  [Jan, 400],
  [Apr, 500],
  [Aug, 24058.635],
  [Sep, 2160],
  [Nov, 115425],
  [Dec, 32570]
]

有人请用Jquery或Javascript代码帮我做这个转换。

Answer 1

您可以使用map()函数迭代它们并返回所需的数组。

＆＃13;

let json =  [{"key":"Jan","value":"400"},{"key":"Apr","value":"500"},{"key":"Aug","value":"24058.635"},{"key":"Sep","value":"2160"},{"key":"Nov","value":"115425"},{"key":"Dec","value":"32570"}];

let obj = json.map(item => [item['key'], item['value']]);

console.log(obj);

＆＃13;

Answer 2

使用 forEach 方法。

＆＃13;

var a= [{"key":"Jan","value":"400"},{"key":"Apr","value":"500"},{"key":"Aug","value":"24058.635"},{"key":"Sep","value":"2160"},{"key":"Nov","value":"115425"},{"key":"Dec","value":"32570"}];
var ans=[];
a.forEach(function(a){
ans.push([a["key"],a["value"]]);
})
console.log(ans);

＆＃13;

使用地图方法。

＆＃13;

var a= [{"key":"Jan","value":"400"},{"key":"Apr","value":"500"},{"key":"Aug","value":"24058.635"},{"key":"Sep","value":"2160"},{"key":"Nov","value":"115425"},{"key":"Dec","value":"32570"}];

var ans=a.map(function(a){
return [a["key"],a["value"]];
})
console.log(ans);

＆＃13;

Answer 3

你可以这样做。

var input = [{
  "key": "Jan",
  "value": "400"
}, {
  "key": "Apr",
  "value": "500"
}, {
  "key": "Aug",
  "value": "24058.635"
}, {
  "key": "Sep",
  "value": "2160"
}, {
  "key": "Nov",
  "value": "115425"
}, {
  "key": "Dec",
  "value": "32570"
}];

var output = input.map(function(obj) {
  return [obj.key, obj.value]
});
console.log(output);

Answer 4

使用数组map()方法：

＆＃13;

var jsonObj = [{
"key": "Jan",
  "value": "400"
}, {
  "key": "Apr",
  "value": "500"
}, {
  "key": "Aug",
  "value": "24058.635"
}, {
  "key": "Sep",
  "value": "2160"
}, {
  "key": "Nov",
  "value": "115425"
}, {
  "key": "Dec",
  "value": "32570"
}];

var newArr = jsonObj.map(function(item) {
  return [item['key'],item['value']];
});

console.log(newArr);

＆＃13;

使用JavaScript for...in循环：

＆＃13;

var jsonObj = [{
"key": "Jan",
  "value": "400"
}, {
  "key": "Apr",
  "value": "500"
}, {
  "key": "Aug",
  "value": "24058.635"
}, {
  "key": "Sep",
  "value": "2160"
}, {
  "key": "Nov",
  "value": "115425"
}, {
  "key": "Dec",
  "value": "32570"
}];

var newArr = [];
for (var i in jsonObj) {
  newArr.push([jsonObj[i].key,jsonObj[i].value]);
}

console.log(newArr);

＆＃13;

json到键值数组

4 个答案: