如何从 JavaScript 函数中获取特定值？

Question

I have a simple code which returns the highest number value from an array.

const getMax = (data) => Object.entries(data).reduce((max, item) => max[1] > item[1] ? max : item);

var myData1 = { a: 1, b:2, c: 3};
var myData2 = { a: 4, b:2, c: 3};

console.log(getMax(myData1));
console.log(getMax(myData2));

Return result:

[ 'c', 3 ]
[ 'a', 4 ]

This whole function is important to run for other purposes, but please how would I specifically print the output of only first calculated value (so 'c' or 'a') and then print specifically output of the second value (so 3 or 4)?

Thank you.

Answer 1

A function can only return one value, whether simple or complex. You can store the complex value that a function returns, then use its individual simpler pieces:

 const getMax = (data) => Object.entries(data).reduce((max, item) => max[1] > item[1] ? max : item); var myData1 = { a: 1, b:2, c: 3}; var myData2 = { a: 4, b:2, c: 3}; var result1 = getMax(myData1); var result2 = getMax(myData1); var simple1_0 = result1[0]; var simple1_1 = result1[1]; var simple2_0 = result2[0]; var simple2_1 = result2[1]; console.log(simple1_0); console.log(simple1_1); console.log(simple2_0); console.log(simple2_1);