CODEWITHSUNDEEP
javascript
soccerway
soccerway

Reputation: 11991

Form into a single array after iterating an object

How to get values of views into single array and get the two largest values in that array. The below is not creating single array. Could someone please advise ?

const data = [
{
id: 1,
views: 5678,
textData: "Sun"
},
{
id: 2,
views: 2500,
textData: "Moon"
},
{
id: 3,
views: 3500,
textData: "Earth"
},
{
id: 4,
views: 1250,
textData: "Sky"
}
]

data.map(({id, views, textData}) =>{
let myArr = [];
myArr.push(views);
let result = Math.max(...myArr);
console.log(result); 
})

Desired Array: [5678, 2500, 3500, 1250 ]
Final Output : [5678,3500 ]

Upvotes: 1

Views: 44

Answers (2)

lry
lry

Reputation: 748

Get result in one loop without sorting, but the code doesn't look very clean.

const data=[{id:1,views:5678,textData:"Sun"},{id:2,views:2500,textData:"Moon"},{id:3,views:3500,textData:"Earth"},{id:4,views:1250,textData:"Sky"}];

const values1 = []
const values2 = [0, 0]
data.forEach(d => {
  values1.push(d.views)
  values2[0] = Math.max(values2[0], Math.min(d.views, values2[1]))
  values2[1] = Math.max(d.views, values2[1])
})

console.log('single values: ', values1)
console.log('two largest values: ', values2)

Upvotes: 0

Unmitigated
Unmitigated

Reputation: 89374

You can use Array#map to create an array of the views properties, then sort it.

const data=[{id:1,views:5678,textData:"Sun"},{id:2,views:2500,textData:"Moon"},{id:3,views:3500,textData:"Earth"},{id:4,views:1250,textData:"Sky"}];
let res = data.map(x => x.views).sort((a,b) => b - a).slice(0, 2);
console.log(res);

Upvotes: 1

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