22 lines
582 B
JavaScript
22 lines
582 B
JavaScript
export default function maxIndex(values, valueof) {
|
|
let max;
|
|
let maxIndex = -1;
|
|
let index = -1;
|
|
if (valueof === undefined) {
|
|
for (const value of values) {
|
|
++index;
|
|
if (value != null
|
|
&& (max < value || (max === undefined && value >= value))) {
|
|
max = value, maxIndex = index;
|
|
}
|
|
}
|
|
} else {
|
|
for (let value of values) {
|
|
if ((value = valueof(value, ++index, values)) != null
|
|
&& (max < value || (max === undefined && value >= value))) {
|
|
max = value, maxIndex = index;
|
|
}
|
|
}
|
|
}
|
|
return maxIndex;
|
|
}
|