Top values in the object, displayed with keys, javascript

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Category:Languages

I'm able to successfuly find out the largest values in the object, however. There is a problem, and that is inability to display the associated key with that value.

var obj = {     t1: 1,     t2: 33,     t3: 10,     t4: 9,     t5: 45,     t6: 101     //... }  // create an array var arr = [];  // loop through the object and add values to the array for (var p in obj) {   arr.push(obj

); } // sort the array, largest numbers to lowest arr.sort(function(a,b){return b - a}); // grab the first 10 numbers var firstThree = arr.slice(0, 3); console.log(firstThree);

It can display the top values, however i'm having a hard time to display keys with that.

The result should be like

var result = {     t6: 101,     t5: 45,     t2: 33  } 

 


You could get the entries, sort and slice them and build a new object by assigning mapped objects to a single object.

var object = { t1: 1, t2: 33, t3: 10, t4: 9, t5: 45, t6: 101 },     result = Object.assign(                      // collect all objects into a single obj         ...Object                                // spread the final array as parameters             .entries(object)                     // key a list of key/ value pairs             .sort(({ 1: a }, { 1: b }) => b - a) // sort DESC by index 1             .slice(0, 3)                         // get first three items of array             .map(([k, v]) => ({ [k]: v }))       // map an object with a destructured     );                                           // key/value pair  console.log(result);

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