CODEWITHSUNDEEP
javascriptarraysjsoniterator
Mike James
Mike James

Reputation: 47

Iterating a Javascript object with arguments

I have a javascript object as follows:

data = {
    'id': my_id,
    'report': my_report,
    'type': my_selection,
    'select': {
        'valid': {
            'table': {
                'pass': ['x', 'y', 'z'],
                'fail': ['x', 'y', 'z']
             }
        },
        'invalid': {
            'table': {
                'pass': ['x', 'y', 'z'],
                'fail': ['x', 'y', 'z']
            }
        }
     }
 };

I would like to use an iterator (double iterator?) to extract all the valid/invalid table pass/fail data.

So, I want to create an iterator that takes the arguments ('valid', 'invalid') and another with the arguments ('pass', 'fail').

I am using this snippet as an example for getting one of the iterators working:

function iterate() {
    let items = [];

    for (let iterator of arguments) {
        items.push(data.select[iterator]);
    }
    return items;
}

var selector_types = iterate('valid', 'invalid');

This returns the 'table' objects as expected:

0 {table: Object}
1 {table: Object}

But ideally the iterate() would take two sets of args, something like:

function iterate() {
    let items = [];

    for (let iterator of arguments) {
        items.push(data.select[iterator[0]].table[iterator[1]]);
    }
    return items;
}

var selector_types = iterate(['valid', 'invalid'], ['pass', 'fail']);

The idea of this is to get the pass/fail data for both the valid/invalid keys in one go. This (of course) doesn't work and returns undefined.

Is there an iterative solution to what I am attempting?

Regards,

MJ

Upvotes: 1

Views: 55

Answers (1)

toastrackengima
toastrackengima

Reputation: 8752

How about some nested loops?

function iterate() {
    let items = [];

    for (let i of arguments[0]) {
        for (let j of arguments[1]) {
            items.push(data.select[i].table[j]);
        }
    }

    return items;
}

You loop through the states valid and invalid, and for each one, you then loop through its pass and fail states, meaning you will loop through four states in total.

Upvotes: 1

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