multidimensional name selector

Question

So I've got a huge array like this:

var enemy = {
    'level1' : {
        creature :
        {
            creature_name : {
                 'Goblin' : {
                    info: {
                        'c_name' : 'Goblin',
                        'HP' : '20',
                        'damage' : '3',
                        'loot' : [
                            {name: 'a wooden sword'   , item: 'weapon'  , value: 2}, 
                            {name: 'a golden necklace', item: 'amulet' , value: 1},
                            {name: 'a pair of boots'  , item: 'boots'  , value: 1},
                            {name: 'some cloth legs'  , item: 'legs'  , value: 3},
                            {name: 'a cloth helmet'  , item: 'helm'  , value: 2}
                        ]
                    }
                 },
                 'Cow' : {
                    info: {
                        'c_name' : 'Cow',
                        'HP' : '10',
                        'damage' : '1',
                        'loot' : [
                            {name: 'a wooden sword'   , item: 'weapon'  , value: 2}, 
                            {name: 'a golden necklace', item: 'amulet' , value: 1},
                            {name: 'a pair of boots'  , item: 'boots'  , value: 1},
                            {name: 'a cloth helmet'  , item: 'helm'  , value: 2}
                        ]
                    }
                 },
                 'dragon' : {
                    info: {
                        'c_name' : 'Cow',
                        'HP' : '300',
                        'damage' : '300',
                        'loot' : [
                            {name: 'an almighty dragon sword'   , item: 'weapon'  , value: 200}, 
                            {name: 'a dragon tooth', item: 'amulet' , value: 30},
                            {name: 'a pair of dragon boots'  , item: 'boots'  , value: 60},
                            {name: 'a dragon helmet'  , item: 'helm'  , value: 60}
                        ]
                    }
                 },

            }

        },
    },
    'level2' : {
        'skelleton' : {
            'HP' : '40',
            'damage' : '5',
            'loot' : [
                {name: 'a bone'   , item: 'weapon'  , value: 1},
                {name: 'a warriors helmet'   , item: 'helm'  , value: 4} 
            ]
        }
    }

};

and when I select the creature I want I need to call it like this:

enemy.level1.creature.creature_name.dragon.info.c_name

Now I want to be able to choose an enemy by a input box or something like that. But I can't figure out how I insert that value in the enemy.level1.creature.creature_name.dragon.info.c_name

I tried using enemy.level1.creature.creature_name.+ input_value + .info.c_name

But that doesn't seem to work. Must be a simple solution for this?

`enemy.level1.creature.creature_name[input_value].info.c_name` — Pointy, Jun 08 '16 at 12:57
`enemy.level1.creature.creature_name[input_value].info.c_name` — vaso123, Jun 08 '16 at 12:59
It is not working, it says Uncaught TypeError: Cannot read property 'info' of undefined. I think because it is creature_name.dragon.info.c_name and not creature_name["dragon"].info.c_name. any help? @Pointy — GetOn, Jun 08 '16 at 13:48
`creature_name["dragon"]` means exactly the same thing as `creature_name.dragon` — Pointy, Jun 08 '16 at 13:49

score 1 · Answer 1 · answered Jun 08 '16 at 13:00

1

When having variable name as the hash element, to access, instead of the .dot notation, you can use the [] notation.

So

enemy.level1.creature.creature_name[input_value].info.c_name

Should get you what you want.

answered Jun 08 '16 at 13:00

phreakv6

2,135
1
9
11

score 0 · Accepted Answer · answered Jun 08 '16 at 13:05

0

What you have is an object not an array. You can set object properties in multiple ways. One way would be like:

var myObj = {
  foo: {
    value : "foo"
  },
  bar: {
    value: "bar"
  }
}

myObj["foo"] = "123";

In your case you object is bigger but the process is the same:

enemy.level1.creature.creature_name[input_value].info.c_name = "whatever name";

where input value is one of the valid properties of creature_name, ie "dragon":

enemy.level1.creature.creature_name["dragon"].info.c_name = "whatever name"

answered Jun 08 '16 at 13:05

terpinmd

1,014
8
15

It is not working, it says `Uncaught TypeError: Cannot read property 'info' of undefined`. I think because it is creature_name.`dragon`.info.c_name and not creature_name["`dragon`"].info.c_name. any help? – GetOn Jun 08 '16 at 13:47
@GetOn you'll have to strip the spaces out of the string; the property name `dragon` with no spaces is not the same as ` dragon ` with spaces. – Pointy Jun 08 '16 at 13:50
trim your value like: var input_value = " dragon "; then enemy.level1.creature.creature_name[input_value.trim()].info.c_name = "whatever name"; – terpinmd Jun 08 '16 at 14:25
is there anything else you need help with....I think this should be the accepted answer. – terpinmd Jun 08 '16 at 19:19

multidimensional name selector

2 Answers2