Question

37

Get property of object in JavaScript

rated 0 times [ 41] [ 4] / answers: 1 / hits: 46449 / 14 Years ago, sun, september 12, 2010, 12:00:00

Basically I have a form with a <select> that chooses which set of data to use (values are m, f and c). I then have a dictionary/object with the data in:

var gdas = {

    // Male

    m: {

        calories: 2500,

        protein: 55,

        carbohydrates: 300,

        sugars: 120,

        fat: 95,

        saturates: 30,

        fibre: 24,

        salt: 6

    },



    // Female

    f: {

        calories: 2000,

        // etc.

};

Now I need to get gdas.m/gdas.f/gdas.c but I'm not sure what syntax to use - I've tried:

var mode = $(#mode).val();

var gda_set = gdas.mode;

var gda_set = gdas[mode];

What's the right syntax/method for this?

Answers

Only authorized users can answer the question. Please sign in first, or register a free account.

frankiebobbyc

Add To Favorites

Follow

Total Points: 18

Total Questions: 85

Total Answers: 104

Location: Norway

Member since Wed, Jul 7, 2021

3 Years ago

answered 14 Years ago irvingcarloe · Accepted Answer

Since you're referencing the property via a variable, you need the bracket notation.

var gda_set = gdas[mode];

...which is the same notation you would use if you were passing a String.

var gda_set = gdas[f];