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ViewsHow to call json API specific keys
can someone help me? i have json like this
[
{ "positive": 2, "negative": 4 },
{ "positive": 9, "negative": 18 },
{ "positive": 6, "negative": 12 }
]
But i want to change it like this
[2, 9, 6] and [4, 18, 12]
·
Juan Pablo Isaza
3 answers
Answer question0
You can use map function.
var data = [
{ "positive": 2, "negative": 4 },
{ "positive": 9, "negative": 18 },
{ "positive": 6, "negative": 12 }
];
const positiveList = data.map(({positive})=> positive);
const negativeList = data.map(({negative})=> negative);
console.log(positiveList);
console.log(negativeList);Or you can merge into 1 map function.
var data = [
{ "positive": 2, "negative": 4 },
{ "positive": 9, "negative": 18 },
{ "positive": 6, "negative": 12 }
];
const [positiveList, negativeList] = data.reduce(([a,b], {positive,negative})=>{
a.push(positive);
b.push(negative);
return [a,b];
}, [[],[]]);
console.log(positiveList);
console.log(negativeList);
·
Juan Pablo Isaza
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0
This way - tried and tested
let data=[
{ "positive": 2, "negative": 4 },
{ "positive": 9, "negative": 18 },
{ "positive": 6, "negative": 12 }
];
let new_d=[]
data.map((e,i,a)=>{Object.keys(e).map((e1,i1,a1)=>{new_d[e1]=[...new_d[e1]||[],e[e1]]})})
console.log(new_d)
·
Juan Pablo Isaza
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0
You can do it with a simple forEach loop. Like that:
const d = [
{ "positive": 2, "negative": 4 },
{ "positive": 9, "negative": 18 },
{ "positive": 6, "negative": 12 }
]
const p = []
const n = []
d.forEach(e => {
p.push(e.positive)
n.push(e.negative)
})
console.log("+", p)
console.log("-", n)
·
Juan Pablo Isaza
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