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Find n highest values in an object JavaScript
Let’s say, we have an object that describes various qualities of a football player like this −
const qualities = {
defence: 82,
attack: 92,
heading: 91,
pace: 96,
dribbling: 88,
tenacity: 97,
vision: 91,
passing: 95,
shooting: 90
};We wish to write a function that takes in such object and a number n (n <= no. of keys in object) and returns an object with n highest key value pairs.
Like for n = 2
Output should be −
{
tenacity: 97,
pace: 96
}Therefore, let’s write the code for this function,
The complete code for this function will be −
Example
const qualities = {
defence: 82,
attack: 92,
heading: 91,
pace: 96,
dribbling: 88,
tenacity: 97,
vision: 91,
passing: 95,
shooting: 90
};
const pickHighest = (obj, num = 1) => {
const requiredObj = {};
if(num > Object.keys(obj).length){
return false;
};
Object.keys(obj).sort((a, b) => obj[b] - obj[a]).forEach((key, ind) =>
{
if(ind < num){
requiredObj[key] = obj[key];
}
});
return requiredObj;
};
console.log(pickHighest(qualities, 3));Output
The output in the console will be −
{ tenacity: 97, pace: 96, passing: 95 }
{ tenacity: 97 }
{ tenacity: 97, pace: 96, passing: 95, attack: 92, heading: 91 }
Updated on: 20-Aug-2020
954 Views
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