javascript array split into a set of three

First build the original data.

var arr = [
  {name:'yanggb1',age:'15'},
  {name:'yanggb2',age:'16'},
  {name:'yanggb3',age:'17'},
  {name:'yanggb4',age:'18'},
  {name:'yanggb5',age:'19'},
  {name:'yanggb6',age:'20'},
  {name:'yanggb7',age:'21'},
  {name:'yanggb8',age:'22'}
];

The array is then grouped three three.

var arr3 = [];
for(var i = 0; i< arr.length; i += 3){
    arr3.push(arr.slice(i, i + 3));
}

Finally, you can see the result is a two-dimensional array.

This is by the slice () method is convenient, manner if the modulo index to more complex.

 

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