Question

所以我有一个看起来像这样的javascript变量

D,CPU_Purchased_ghz,2015-03-19 00:00:00,10.00,2015-03-20 00:00:00,10.00

是否可以拆分成这样的数组：

[
    [D,CPU_Purchased_ghz],
    [2015-03-19 00:00:00,10.00],
    [2015-03-20 00:00:00,10.00]
]

即。我希望能够将其拆分为2个块

Answer 1

如果您使用的变量实际上是一个数组：

var arr1 = [ "D", "CPU_Purchased_ghz", "2015-03-19 00:00:00", 10.00, "2015-03-20 00:00:00", 10.00 ];
var arr2 = [];

for(var i=0, l=arr1.length; i<l; i++){
    arr2.push( [arr1[i], arr1[++i]] );
}

console.log(arr2); // Outputs [ ["D","CPU_Purchased_ghz"], ["2015-03-19 00:00:00",10.00], ["2015-03-20 00:00:00",10.00] ]

JS Fiddle Demo

Answer 2

（参见编辑 for Array解决方案）

这可以通过正则表达式很好地完成

var arr = aString.match(/[^,]+,[^,]+/g);

aString包含您的字符串。

返回：

[
    "D,CPU_Purchased_ghz", 
    "2015-03-19 00:00:00,10.00", 
    "2015-03-20 00:00:00,10.00"
]

JSFiddle

编辑：我刚收到通知，该变量可能是数组而不是字符串。如果确实如此，那么首先加入数组：

var arr = aArray.join(',').match(/[^,]+,[^,]+/g);

JsFiddle for array

Answer 3

这个小函数会将数组块化为指定大小的块：

var chunk = function (chunkSize, array) {
  var chunked = []

  var from

  for (var i = 0, range = array.length / chunkSize; i < range; i++) {
    from = i * chunkSize

    chunked.push(array.slice(from, from + chunkSize))
  }

  return chunked
}

// Usage:
chunk(3, [1, 2, 3, 4, 5])
// -> [[1, 2, 3], [4, 5]]

Javascript - 将元素数组转换为数组块

3 个答案:

JS Fiddle Demo