Cacher is the code snippet organizer for pro developers

/**
 *  例程：对象数组的二维比较和插入
 *  Author： pockry
 *  说明：需要插入的数组已经是排序好的
 */

var arr = [
	{y: 2014, m: 10}, 
	{y: 2014, m: 7}, 
  {y: 2014, m: 1}, 
  {y: 2013, m: 7}, 
	{y: 2013, m: 1}
 ];
 var newarr = {y: 2013, m: 10};

for (var i = 0; i < arr.length; i++) {
  document.write("y: " + arr[i].y + " m: " + arr[i].m + "<br />")
}

if (arr[0].y < newarr.y) {
  arr.splice(0, 0, newarr);
} else if (arr[arr.length - 1].y > newarr.y) {
  arr.push(newarr);
} else {
  for (var i = 0; i < arr.length; i++) {
    if (arr[i].y == newarr.y) {
      if (arr[i].m < newarr.m) {
        arr.splice(i, 0, newarr);
        break;
      } else if (arr[i + 1].y < newarr.y || arr[i + 1].m < newarr.m) {
        arr.splice(i + 1, 0, newarr);
        break;
      }
    }
  }
}
    
document.write("<br><br>");
for (var i = 0; i < arr.length; i++) {
  document.write("y: " + arr[i].y + " m: " + arr[i].m + "<br />");
}