pass variable into javascript object

Question

Can you please help with my problem

I have the following JavaScript object:

var data = { 
 'rows[0][name]': 'foshka',
 'rows[0][tel]': '096',
 'rows[0][opt]': 'none'
};

The problem is that i get an error while trying to pass variable as rows index:

var i = 0;
var data = { 
 'rows['+ i +'][name]': 'one',
 'rows['+ i +'][tel]': '096',
 'rows['+ i +'][opt]': 'none'
};

Thanks in advance

• Oded: Why are the property names all strings?
• MooGoo: It is legal syntax, though I have a feeling he is not doing what he thinks he is doing.
• A. Levy: What error are you getting? Is it actually an error, or is data not turning out like you expected?
• Andy E: See also: stackoverflow.com/questions/2274242/…

Answer 1

Your code has to be

var data = {};
data[ 'rows['+ i +'][name]' ] = 'one';
data[ 'rows['+ i +'][tel]' ] = '069';

However you might want to change your structure to sth like this:

var data ={};
var i = 0;
data['rows'][i]['name'] = 'one';

Or even cleaner:

var data = { rows[] };
var i = 0;
data['rows'][i] = { 'name' : 'one', 'tel' : 069' };
// so you can access them like this:
alert ( data['rows'][i]['name'] );

• Andy E: The second structure will throw an error unless data['rows'] and data['rows'][i] are defined first.
• Skilldrick: Please change it into option two - currently it's a crime against programming :)
• MooGoo: There's no requirement to use bracket notation to define crazy object properties. Only when accessing said properties is it necessary.

Answer 2

I think your data should look like this:

var data = {
 rows: [{
 name: 'one',
 tel: '096',
 opt: null
 }]
};

That way you can simply add new rows if needed.