js 长数组 拆分成 3个一组怎么实现 具体代码

Question

问个问题 怎么把一个数组查分出来 分组 例如：
var xx = [
{"id": 01, "url": 'http/stat/00041.png'},
{"id": 02, "url": 'http/stat/00042.png'},
{"id": 03, "url": 'http/stat/00043.png'},
{"id": 04, "url": 'http/stat/00044.png'},
{"id": 05, "url": 'http/stat/00045.png'},
{"id": 06, "url": 'http/stat/00046.png'}
];
怎么变成如下格式 3个一组
var cc = [
[
{"id": 01, "url": 'http/stat/00041.png'},
{"id": 02, "url": 'http/stat/00042.png'},
{"id": 03, "url": 'http/stat/00043.png'}
],
[
{"id": 04, "url": 'http/stat/00044.png'},
{"id": 05, "url": 'http/stat/00045.png'},
{"id": 06, "url": 'http/stat/00046.png'}
],
];

Answer 1

function getArr(){ var xx = [{"id": 01, "url": 'http/stat/00041.png'}, {"id": 02, "url": 'http/stat/00042.png'}, {"id": 03, "url": 'http/stat/00043.png'}, {"id": 04, "url": 'http/stat/00044.png'}, {"id": 05, "url": 'http/stat/00045.png'}, {"id": 06, "url": 'http/stat/00046.png'}]; var len = xx.length; var n = 3; //假设每行显示3个 var lineNum = len % n === 0 ? len / n : Math.floor( (len / n) + 1 ); var cc = []; for (var i = 0; i < lineNum; i++) { var temp = xx.slice(i*n, i*n+n); cc.push(JSON.parse(JSON.stringify(temp))); } alert(JSON.stringify(cc)); document.getElementById('demo').innerHTML=JSON.stringify(cc); }

测试

onclick="getArr()">测试