如何在javascript中按顺序排列序列？

Question

我有一个字符串数组，即章节序列。我应该按顺序对数组进行排序。

示例

var item = ["1.1", "1.1.1", "17.10", "13.11", "11.12", "17.7.a", "6.11", "6.11.1", "1.2", "1.2.1", "1.2.2.a"]

console.log("After Sort : " + item.sort());

但预期结果是

["1.1", "1.1.1", "1.2", "1.2.1", "1.2.2.a", "6.11", "6.11.1", "11.12", "13.11", "17.7.a", "17.10"]

更新

我从这个reference

得到了答案

Array.prototype.humanSort = function() {
  return this.sort(function(a, b) {
    aa = a.split(/(\d+)/);
    bb = b.split(/(\d+)/);

    for(var x = 0; x < Math.max(aa.length, bb.length); x++) {
      if(aa[x] != bb[x]) {
        var cmp1 = (isNaN(parseInt(aa[x],10)))? aa[x] : parseInt(aa[x],10);
        var cmp2 = (isNaN(parseInt(bb[x],10)))? bb[x] : parseInt(bb[x],10);
        if(cmp1 == undefined || cmp2 == undefined)
          return aa.length - bb.length;
        else
          return (cmp1 < cmp2) ? -1 : 1;
      }
    }
    return 0;
  });
}