CODEWITHSUNDEEP
javascript
user2033475
user2033475

Reputation:

How to make a variable addressable by name as string in JavaScript?

Is there a way to convert variable names to strings in javascript? To be more specific:

var a = 1, b = 2, c = 'hello';
var array = [a, b, c];

Now at some point as I go through the array, I need to get variable names (instead of their values) as strings - that would be 'a' or 'b' or 'c'. And I really need it to be a string so it is writeable. How can I do that?

Upvotes: 29

Views: 37326

Answers (3)

Cody
Cody

Reputation: 10015

Goint off of Triptych's stuff (Which Thanks)...

(function(){
  (createSingleton = function(name){  // global
    this[name] = (function(params){
      for(var i in params){
        this[i] = params[i];
        console.log('params[i]: ' + i + ' = ' + params[i]);
      }
      return this;
    })({key: 'val', name: 'param'});
  })('singleton');
  console.log(singleton.key);
})();

Just thought this was a nice little autonomous pattern...hope it helps! Thanks Triptych!

Upvotes: 1

Kenan Banks
Kenan Banks

Reputation: 211962

Use a Javascript object literal:

var obj = {
    a: 1,
    b: 2,
    c: 'hello'
};

You can then traverse it like this:

for (var key in obj){
    console.log(key, obj[key]);
}

And access properties on the object like this:

console.log(obj.a, obj.c);

Upvotes: 30

Paolo Bergantino
Paolo Bergantino

Reputation: 488384

What you could do is something like:

var hash = {};
hash.a = 1;
hash.b = 2;
hash.c = 'hello';
for(key in hash) {
    // key would be 'a' and hash[key] would be 1, and so on.
}

Upvotes: 3

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