How to call javascript variables which is "like class"

Question

I have a class like this:

label = 
{
   car1 = "Chevrolet Camaro",
   car2 = "Ford Mustang",
   car3 = "Dodge Challenger"
}

When I need to get a label, I use this method:

function getLabel(name)
{
   switch (name.ToLowerCase())
   {
      case "car1":
         return label.car1;
         break;
      case "car2":
         return label.car2;
         break;
      case "car3":
         return label.car3;
         break;
   }
}

This function is OK for few rows, but if I have so many rows, is there any way to handle this? Is there any way like:

function getLabel(name)
{
   text = name.ToLowerCase();
   return label.text;
}

Thank you very much.

are you sure it isn't `label = { car1 : "Chevrolet Camaro",`? — lastr2d2, Dec 09 '13 at 07:30

score 3 · Accepted Answer · answered Dec 09 '13 at 07:29

3

You can access the members of an object using a string like this:

function getLabel(name)
{
   var text = name.ToLowerCase();
   return label[text];
}

Further Reading

Property Accessors

answered Dec 09 '13 at 07:29

p.s.w.g

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score 0 · Answer 2 · answered Dec 09 '13 at 07:40

0

You can create a car object for easy get it's properties, like this:

function carObj(label, name){
  this.label = label;
  this.name = name;
}

var cars = new Array(
        new carObj('car1','Chevrolet Camaro'),
        new carObj('car2','Ford Mustang'),
        new carObj('car3','Dodge Challenger')
        );

function getCarName(label){
   for(var i = 0; i < cars.length; i++){
       if(cars[i].label == label){
          return cars.name;
       }
   }
   return '';
}

answered Dec 09 '13 at 07:40

Ringo

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"for" loop will let the speed slow – Just A Name Dec 09 '13 at 08:12
This is the example. I mean mention as create an object in javascript. – Ringo Dec 09 '13 at 08:17

How to call javascript variables which is "like class"

2 Answers2