Js gets the sample code for the maximum and minimum values of an array

When doing a project encountered a return query content, only the maximum and minimum value problem.

First of all,

 
 
Array.max=function(array) 
{ 
return Math.max.apply(Math,array); 
} 

 
Array.min=function(array) 
{ 
return Math.min.apply(Math,array); 
} 

call

 
//Handle ordinate adaptive --start
var yData = data.rows[i]; 
var yMin = Array.min(yData);//Minimum ordinate
var yMax = Array.max(yData);//Vertical maximum