Get data from an array of dictionaries in Javascript

Question

I'm working with a web framework and I'm using variables from Python into Javascript code.

I get next array in Python, which can contain more than one cell with dictionaries inside it:

 [[{'lacp_use-same-system-mac': u'no'}, {'lacp_mode': u'passive'}, {'lacp_transmission-rate': u'slow'}, {'lacp_enable': u'no'}]]

I want to be able to access every cell array and, after that, get every keys from the dictionary inside this cell array. Up to now, I only have arrays or dictionaries, so for both cases I did next:

var X = JSON.parse(("{{X|decodeUnicodeObject|safe}}").replace(/L,/g, ",").replace(/L}/g, "}").replace(/'/g, "\""));

Where X is the Python variable. Unfortunately, this does not run with the array I wrote above.

How can I do that?

Thanks beforehand,

Regards.

is the first array, you like to convert? why has it a nested array? please add the wanted result after conversion. — Nina Scholz
– Nina Scholz, Commented Oct 18, 2017 at 9:07

Ced · Accepted Answer · 2017-10-18 09:28:04Z

1

I want to be able to access every cell array and, after that, get every keys from the dictionary inside this cell array

If I understood correctly you want to get the keys of a nested array.

Note: your array isn't valid js.

const arrarr = [[{key1: 'val1'}, {key2: 'val2'}], [{key3: 'val3'}, {key4: 'val4'}]];
    
arrarr.forEach(arr => {
  arr.forEach(e => {
    Object.keys(e).forEach(k => console.log(k))
  })
})

If the depth of nests is of arbitrary depth you can use recursion and check if the child is an array, if it is keep going, else get the keys.

edited Oct 18, 2017 at 9:28

answered Oct 18, 2017 at 9:12

Ced

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