JSFiddle - React, Tailwind, and code Playground

JavaScript

var string_array =  ["ID LONGITUDE LATITUDE", "0 77.139305 28.795975", "2 77.308929 28.486877", "4 73.820680 18.464110"];

var new_string_array = [];

for(var strings in string_array) {
    var x = string_array[strings].split(" ");
    for(var sub_string in x) {
        new_string_array.push(x[sub_string]);
    }
}

alert(new_string_array);