update on array elements in javascript file and save it

Question

If I'm reading data "array" from javascript file, and I want to change an element value in the array, how can I apply this update on the javascript file "save the javascript file with new value".

var country = document.getElementById('edit_country').value;
        for (i = 0; i < country_arr.length; i++) {
            if(country_arr[i] == country) {
                var city = "|".concat(document.getElementById("add_city").value);
                city_arr[i] = city_arr[i].concat(city);
            }
        }

You can't do that, at least in pure browser JS. Why would you want to do that? — Adam Azad
– Adam Azad, Commented Jan 16, 2018 at 15:21
I am using a dropdown list for selecting country and city, I am reading the countries and cities from a javascript file I want to have an ability to add new cities or edit some cities . — George Saad
– George Saad, Commented Jan 16, 2018 at 15:32
You should go with a database then, or simply store these in a minimal JSON file. Either way, you will have to rely on server-side to securely update the database/JSON. — Adam Azad
– Adam Azad, Commented Jan 16, 2018 at 15:34
using database is an the easy choice, but I thought inserting a 245 countries and 48300 cities in the database is a bad idea — George Saad
– George Saad, Commented Jan 16, 2018 at 15:43

Daniel Diment · Accepted Answer · 2018-01-16 15:29:17Z

0

You cannot edit a file from a computer with Java Script, the best thing you can do is to create a new file with it and download it. To download a file containing a JSON check this other question: Link

answered Jan 16, 2018 at 15:29

Daniel Diment

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1 Comment

George Saad Over a year ago

I need to keep the data in javascript file, so I overrite the file with php and problem solve, not easy choise but its ok.\n thanks for your help

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