Flatten object to array?

Question

I\'m using an object as a hash table. I\'d like to quickly print out its contents (for alert() for instance). Is there anything built in to convert a hash into

Answer 1

Here is my version of it. It should allow you to flatten input like below:

var input = {
   a: 'asdf',
   b: [1,2,3],
   c: [[1,2],[3,4]],
   d: {subA: [1,2]}
}

The function is like this:

    function flatten (input, output) {

      if (isArray(input)) {
        for(var index = 0, length = input.length; index < length; index++){
          flatten(input[index], output);
        }
      }
      else if (isObject(input)) {
        for(var item in input){
          if(input.hasOwnProperty(item)){
            flatten(input[item], output);
          }
        }
      }
      else {
        return output.push(input);
      }
    };

    function isArray(obj) {
      return Array.isArray(obj) || obj.toString() === '[object Array]';
    }

    function isObject(obj) {
      return obj === Object(obj);
    }

Usage is something like:

var output = []

flatten(input, output);

Then output should be the flattened array.