How to find the maximum value of an array and its subscript in javascript

Method: 1. Use the "Math.max(...arr)" statement to find the maximum value max of the arr array; 2. Use "arr.map(item => item).indexOf(max )" statement finds its subscript value based on the maximum value.

The operating environment of this tutorial: windows7 system, javascript version 1.8.5, Dell G3 computer.

Javascript finds the maximum value of an array and its subscript

Implementation ideas:

1 , Use the Math.max() method to find the maximum value of the array

2. Get its subscript in the array based on the maximum value

Implementation code:

var arr=[2,6,1,5,22,3,66,12,9];
var max=Math.max(...arr);
console.log("最大值为："+max);
var index = arr.map(item => item).indexOf(max);
console.log("最大值的数组下标为："+index);

Output result:

[Recommended learning: javascript advanced tutorial】

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