使用 underscore.js 将数组值分组为每个数组中的 3 个对象

下面是一个数组，我必须将每个对象中的 3 个值分组：

var xyz = {"name": ["hi","hello","when","test","then","that","now"]};

输出应位于数组下方：

[["hi","hello","when"],["test","then","that"],["now"]]

纯 JavaScript 代码：

function groupArr(data, n) {
    var group = [];
    for (var i = 0, j = 0; i < data.length; i++) {
        if (i >= n && i % n === 0)
            j++;
        group[j] = group[j] || [];
        group[j].push(data[i])
    }
    return group;
}

groupArr([1,2,3,4,5,6,7,8,9,10,11,12], 3);