Question

var value1=50
var value2=140

group 1
a,b     a>=42 a<=126    , b>=140 b<=213
a,c     a>=42 a<=126    , c>=1.40 c<=2.13
b,a     b>=140 b<=213   , a>=42 a<=126
c,a     c>=1.40 c<=2.13 , a>=42 a<=126

group 2
d,e     d>=91 d<=443 , e>=58 e<=84
d,f     d>=91 d<=443 , f>=4.8 f<=7
e,d     e>=58 e<=84  , d>=91 d<=443
f,d     f>=4.8 f<=7  , d>=91 d<=443

Need to program this into js so that the two values will check through the ranges of numbers for a suitable number range. Im looking to have it scan through the first group if not successfully finding two ranges to suit both values it checks with the second group.

I have tried a number of different methods for this but i cant work out how to do it?

Help much appreciated

Answer 1

Something like the following: http://jsbin.com/ipefuf/1/

It’s a little verbose – could be shortened, but does roughly what you need. Start with it.

(function(){

  var value1=50;
  var value2=140;  

  var groups = [
    {
      name: "group 1",
      ranges: [
        { name: "a,b", func: function(a,b){ return a>=42 && a<=126 && b>=140 && b<=213; } },
        { name: "a,c", func: function(a,c){ return a>=42 && a<=126 && c>=1.40 && c<=2.13; } },
        { name: "b,a", func: function(b,a){ return b>=140 && b<=213 && a>=42 && a<=126; } },
        { name: "c,a", func: function(c,a){ return c>=1.40 && c<=2.13 && a>=42 && a<=126; } }
      ]
    },
    {
      name: "group 2",
      ranges: [
        { name: "d,e", func: function(d,e){ return d>=91 && d<=443 && e>=58 && e<=84; } },
        { name: "d,f", func: function(d,f){ return d>=91 && d<=443 && f>=4.8 && f<=7; } },
        { name: "e,d", func: function(e,d){ return e>=58 && e<=84 && d>=91 && d<=443; } },
        { name: "f,d", func: function(f,d){ return f>=4.8 && f<=7 && d>=91 && d<=443; } }
      ]
    }
  ];

  var inRange = false;

  for(var groupIndex in groups)
  {
    var group = groups[groupIndex];    

    for(var rangeIndex in group.ranges)
    {
      var range = group.ranges[rangeIndex];      
      inRange = range.func(value1, value2);

      if(inRange)
      {
        alert("Group: " + group.name + ", Range: " + range.name);
        break;
      }      
    }

    if(inRange)
    {
      break; 
    }
  }

  if(!inRange)
  {
    alert("Not in range."); 
  }

})();