Underscore based iterator prototype not getting value

Question

Using underscore, I iterating a data, and adding in to a function, after i added, i am extending the function using 'prototype' - when i call that prototype i am not getting any value. and the prototype not available for public use at all..

here is my code :

var 
data = {
    people : [
        {name:'Caring', state:'Tn', price:'100'},
        {name:'Mo', state:'Ap', price:'200'},
        {name:'af', state:'Jk', price:'33'},
        {name:'adi', state:'Kl', price:'400'},
        {name:'Hu', state:'Ka', price:'600'}
    ]
},

    OrderItem = function(person){
        this.person = person
        getSummary = function(){
          return  person.name
            + ' spent '
            + person.price
            + ' in ' + person.state + '.';
        }

        return {getSummary : getSummary}
    };

    OrderItem.prototype.data = function(){
        return this.person;
    }

    m = _.collect(data.people, function(value, key, list){
        return new OrderItem(value);
    })



_.each(m, function(value){
   // console.log(value.getSummary()); //works fine
    console.log(value.data()); //not working!
})

In the _.each method, when i call the value.data I am getting error. how to fix this?

DEMO HERE

possible duplicate of Javascript Prototype not Working

Rob W
– Rob W

2014-01-29 14:10:09 +00:00
Commented Jan 29, 2014 at 14:10 — Rob W
– Rob W, Commented Jan 29, 2014 at 14:10

damian · Accepted Answer · 2014-01-29 14:09:27Z

1

You're only returning the getSummary method. Why not use this?

jsfiddle

OrderItem = function(person){
    this.person = person
    getSummary = function(){
      return  person.name
        + ' spent '
        + person.price
        + ' in ' + person.state + '.';
    }

    return this;
};

answered Jan 29, 2014 at 14:09

damian

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