js数组操作问题

Question

现在有一个数组如下var arr = [111,23,44,534,4123,312,32,3123,424,552,24,55];每隔三个切割一次 形成一个新的数组,[[111,23,44],[534,4123,312],[32,3123,424],[24,55]]再在新的数组里取最大值和index 形成最终数组arr = arr=[{'index':0,'max':111},{'index':1,'max':4123},{'index':2,'max':3123},{'index':3,'max':55}];请问 如何做到

Answer 1

var arr = [111,23,44,534,4123,312,32,3123,424,552,24,55];

var result = [];

for(var i=0,j=0; i<arr.length; i+=3,j++){

   result.push({'index': j, 'max': Math.max.apply(Math, arr.slice(i,i+3))});

}

console.log(result);