javascript implements a method summary that finds the maximum value in an array

Method 1 (using recursive functions) :

var arr = [9,8,55,66,49,68,109,55,33,6,2,1];
  
var max = arr[0];

function findMax( i ){
  if( i == arr.length ) return max;
  if( max < arr[i] ) max = arr[i];
  findMax(i+1);
}
 
findMax(1);
console.log(max);

Method 2 (loop traversal using for) :

var arr = [9,8,55,66,49,68,109,55,33,6,2,1];  
var max = arr[0];
for(var i = 1; i < arr.length; i++){
  if( max < arr[i] ){
    max = arr[i];
  }
}

console.log(max);

Method 3 (using apply to pass the array into the max method and return it directly) :

Math.max.apply(null,[9,8,55,66,49,68,109,55,33,6,2,1])

Note: In addition, there are many array sorting methods, after sorting, according to the new array index value to get the maximum/minimum value.

var a=[1,2,3,5];
alert(Math.max.apply(null, a));// The maximum 
alert(Math.min.apply(null, a));// The minimum value 

Multidimensional arrays can be modified as follows:

var a=[1,2,3,[5,6],[1,4,8]];
var ta=a.join(",").split(",");// into 1 Dimensional array 
alert(Math.max.apply(null,ta));// The maximum 
alert(Math.min.apply(null,ta));// The minimum value