https://silasbartol.com/willitperiodic/functions.js

1// List of element abrivations in order of atomic number
2const elements = [
3    "H", "He",
4    "Li", "Be", "B", "C", "N", "O", "F", "Ne",
5    "Na", "Mg", "Al", "Si", "P", "S", "Cl", "Ar",
6    "K", "Ca", "Sc", "Ti", "V", "Cr", "Mn", "Fe", "Co", "Ni", "Cu", "Zn", "Ga", "Ge", "As", "Se", "Br", "Kr",
7    "Rb", "Sr", "Y", "Zr", "Nb", "Mo", "Tc", "Ru", "Rh", "Pd", "Ag", "Cd", "In", "Sn", "Sb", "Te", "I", "Xe",
8    "Cs", "Ba", "La", "Ce", "Pr", "Nd", "Pm", "Sm", "Eu", "Gd", "Tb", "Dy", "Ho", "Er", "Tm", "Yb", "Lu", "Hf", "Ta", "W", "Re", "Os", "Ir", "Pt", "Au", "Hg", "Tl", "Pb", "Bi", "Po", "At", "Rn",
9    "Fr", "Ra", "Ac", "Th", "Pa", "U", "Np", "Pu", "Am", "Cm", "Bk", "Cf", "Es", "Fm", "Md", "No", "Lr", "Rf", "Db", "Sg", "Bh", "Hs", "Mt", "Ds", "Rg", "Cn", "Nh", "Fl", "Mc", "Lv", "Ts", "Og"
10];
11
12const alkali = [3, 11, 19, 37, 55, 87];
13const alkaliEarth = [4, 12, 20, 38, 56, 88];
14const lanthanoid = [57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 79, 70, 71];
15const actinoid = [89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 100, 101, 102, 103];
16const transition = [21,22,23,24,25,26,27,28,29,30,39,40,41,42,43,44,45,46,47,48,72,73,74,75,76,77,78,79,80,104,105,106,107,108];
17const postTransition = [13, 31, 49, 50, 81, 82, 83, 84];
18const metalloid = [5, 14, 32, 33, 51, 52, 85];
19const reactiveNonmetal = [1, 6, 7, 8, 9, 15, 16, 17, 34, 35, 53]
20const noble = [2, 10, 18, 36, 54, 86]
21const space = [elements.length+1]
22
23
24// Function which returns a boolean based on whether input string can be spelled using periodic table abriviations
25function periodicMatch(string, allowSpaces = false) {
26    let matchStrings = [];
27    elements.forEach(item=>matchStrings.push(item.toUpperCase()));
28    if (allowSpaces) {
29        matchStrings.push(" ");
30    };
31
32    const regex = new RegExp("^((" + matchStrings.join(")|(") + "))+$", "g");
33
34    return string.toUpperCase().match(regex) != null;
35}
36
37
38// Function which returns an array of objects with each object containing a string of the spelling, and the atomic numbers of elements used in the spelling (or 119 for space)
39function periodicSpell(string, allowSpaces = false) {
40    let matchStrings = Array.from(elements);
41    if (allowSpaces) {
42        matchStrings.push(" ");
43    };
44
45    let listA = [{nums: [], length:0, string:''}]
46
47
48    while (true) {
49        let listB = [];
50
51        listA.forEach(test => {
52            if (test.string.toUpperCase() == string.toUpperCase()) {
53                listB.push(test)
54                return
55            }
56
57            matchStrings.forEach((matchString, n) => {
58                if (test.length + matchString.length > string.length)
59                    return
60                if (matchString.toUpperCase() == string.toUpperCase().slice(test.length, test.length + matchString.length)) {
61                    let outputNums = Array.from(test.nums)
62                    outputNums.push(n+1);
63                    listB.push({nums: outputNums, length:test.length + matchString.length, string: test.string + matchString})
64                }
65            });
66        });
67
68        if (JSON.stringify(listA) == JSON.stringify(listB)) {
69            listA.forEach((item, i, array) => {
70                delete item.length;
71            });
72
73            return listA;
74            break
75        }
76
77        listA = Array.from(listB);
78    }
79}
80