254 lines
9.7 KiB
JavaScript
254 lines
9.7 KiB
JavaScript
window.addEventListener("load", () => main());
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// Get input area
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const input = document.getElementById("firstname");
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const main = () => {
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// Reset content of the input
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input.value = "";
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// Create the paragraph of the firstname
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let string_firstname = document.createElement("p");
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string_firstname.className = "firstname-constant-string";
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// Create the paragraph of the constant
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let double_firstname = document.createElement("p");
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double_firstname.className = "firstname-constant-double";
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// Add the elements to the page
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document.getElementsByClassName("firstname-constant").item(0).append(string_firstname);
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document.getElementsByClassName("firstname-constant").item(0).append(double_firstname);
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// Fill informations with placeholder
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defaultFirstname();
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defaultConstant();
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// Call callback when editing the input
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input.addEventListener("input", updateConst);
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};
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// Callback: called when firstname is changed
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const updateConst = () => {
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const firstname = input.value.trim().toLowerCase();
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if(firstname.length) {
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const data = getConst(firstname.split(""));
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getString().textContent = firstname.replace(/^\w/, (c) => c.toUpperCase());
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getDouble().textContent = data.const;
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console.log(`info: ${JSON.stringify(data.infos, undefined, 2)}`);
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} else {
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defaultFirstname();
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defaultConstant();
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}
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};
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// Get the paragraph of the name
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const getString = () => {
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return document.getElementsByClassName("firstname-constant").item(0)
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.getElementsByClassName("firstname-constant-string").item(0);
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}
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// Get the paragraph of the constant
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const getDouble = () => {
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return document.getElementsByClassName("firstname-constant").item(0)
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.getElementsByClassName("firstname-constant-double").item(0);
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}
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// Set the paragraph of the name to the placeholder
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const defaultFirstname = () => {
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getString().textContent = input.placeholder;
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}
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// Set the paragraph of the constant to the placeholder
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const defaultConstant = () => {
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getDouble().textContent = getConst(input.placeholder.split("")).const;
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}
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const getConst = (letters = Array) => {
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// Store constants of each letters of the firstname
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let const_data = [];
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// Store some constants info
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let const_infos = {};
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// Assign each letter to a constant, fallback to 1 if no one has been found
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let position = 0;
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letters.forEach(letter => {
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position++;
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switch (letter) {
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case "a":
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const_data.push(1.28242712910062263687534256886979172 ** position);
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const_infos[letter] = {
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"wikipedia": "https://en.wikipedia.org/wiki/Glaisher%E2%80%93Kinkelin_constant"
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};
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break;
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case "b":
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const_data.push(1.456074 ** position);
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const_infos[letter] = {
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"wikipedia": "https://en.wikipedia.org/wiki/Backhouse%27s_constant"
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};
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break;
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case "c":
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const_data.push(299792458 ** position);
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const_infos[letter] = {
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"wikipedia": "https://en.wikipedia.org/wiki/Speed_of_light"
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};
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break;
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case "d":
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const_data.push(0.73908513321516064165 ** position);
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const_infos[letter] = {
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"wikipedia": "https://en.wikipedia.org/wiki/Dottie_number"
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};
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break;
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case "e":
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const_data.push(2.71828182845904523536028747135266250 ** position);
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const_infos[letter] = {
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"wikipedia": "https://en.wikipedia.org/wiki/E_(mathematical_constant)"
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};
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break;
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case "f":
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const_data.push(2,80777024202851936522150118655777293 ** position);
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const_infos[letter] = {
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"wikipedia": "https://en.wikipedia.org/wiki/Frans%C3%A9n%E2%80%93Robinson_constant"
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};
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break;
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case "g":
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const_data.push(0.83462684167407318628142973279904680 ** position);
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const_infos[letter] = {
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"wikipedia": "https://en.wikipedia.org/wiki/Gauss%27s_constant"
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};
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break;
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case "h":
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const_data.push(6.62607015e-34 ** position);
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const_infos[letter] = {
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"wikipedia": "https://en.wikipedia.org/wiki/Planck_constant"
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};
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break;
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case "i":
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const_data.push(0.20787957635076190854695561983497877 ** position);
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const_infos[letter] = {
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"oeis": {
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"link": "https://oeis.org/A049006",
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"name": "Decimal expansion of i^i"
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}
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};
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break;
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case "j":
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const_data.push(5.5208e27 ** position);
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const_infos[letter] = {
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"wikipedia": "https://en.wikipedia.org/wiki/J/psi_meson"
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};
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break;
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case "k":
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const_data.push((-273.15) ** position);
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const_infos[letter] = {
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"wikipedia": "https://en.wikipedia.org/wiki/Kelvin"
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};
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break;
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case "l":
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const_data.push(0.97027011439203392574 ** position);
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const_infos[letter] = {
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"wikipedia": "https://en.wikipedia.org/wiki/Lochs%27s_theorem"
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};
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break;
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case "m":
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const_data.push(0.26149721284764278375542683860869585 ** position);
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const_infos[letter] = {
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"wikipedia": "https://en.wikipedia.org/wiki/Meissel%E2%80%93Mertens_constant"
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};
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break;
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case "n":
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const_data.push(6.02214076e+23 ** position);
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const_infos[letter] = {
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"wikipedia": "https://en.wikipedia.org/wiki/Avogadro_constant"
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};
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break;
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case "o":
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const_data.push(1.66168794963359412129581892274995074 ** position);
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const_infos[letter] = {
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"wikipedia": "https://en.wikipedia.org/wiki/Somos%27_quadratic_recurrence_constant"
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};
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break;
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case "p":
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const_data.push(2.29558714939263807403429804918949038 ** position);
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const_infos[letter] = {
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"wikipedia": "https://en.wikipedia.org/wiki/Universal_parabolic_constant"
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};
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break;
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case "q":
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const_data.push(1.8755459e-18 ** position);
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const_infos[letter] = {
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"wikipedia": "https://en.wikipedia.org/wiki/Planck_units#History_and_definition"
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};
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break;
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case "r":
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const_data.push(262537412640768743.999999999999250073 ** position);
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const_infos[letter] = {
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"wikipedia": "https://en.wikipedia.org/wiki/Heegner_number#Almost_integers_and_Ramanujan.27s_constant"
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};
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break;
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case "s":
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const_data.push(0.18785964246206712024851793405427323 ** position);
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const_infos[letter] = {
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"wikipedia": "https://en.wikipedia.org/wiki/MRB_constant"
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};
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break;
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case "t":
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const_data.push(1.92756197548292530426 ** position);
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const_infos[letter] = {
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"wikipedia": "https://en.wikipedia.org/wiki/Generalizations_of_Fibonacci_numbers#Tetranacci_numbers"
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};
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break;
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case "u":
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const_data.push(1.84775906502257351225 ** position);
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const_infos[letter] = {
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"wikipedia": "https://en.wikipedia.org/wiki/Self-avoiding_walk"
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};
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break;
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case "v":
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const_data.push(0.42215773311582662702 ** position);
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const_infos[letter] = {
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"wikipedia": "https://en.wikipedia.org/wiki/Reuleaux_tetrahedron"
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};
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break;
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case "w":
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const_data.push(2.09455148154232659148 ** position);
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const_infos[letter] = {
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"wikipedia": "https://en.wikipedia.org/wiki/John_Wallis#Contributions_to_mathematics",
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"oeis": {
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"link": "https://oeis.org/A007493",
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"name": "Decimal expansion of Wallis' number, the real root of x^3 - 2*x - 5"
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}
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};
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break;
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case "x":
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const_data.push(1.0021e-13 ** position);
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const_infos[letter] = {
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"wikipedia": "https://en.wikipedia.org/wiki/X_unit"
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};
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break;
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case "y":
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const_data.push(0.57721566490153286060651209008240243 ** position);
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const_infos[letter] = {
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"wikipedia": "https://en.wikipedia.org/wiki/Euler%27s_constant"
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};
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break;
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case "z":
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const_data.push(376.730313668 ** position);
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const_infos[letter] = {
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"wikipedia": "https://en.wikipedia.org/wiki/Impedance_of_free_space"
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};
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break;
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default: // By default, equals to 1
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const_data.push(1);
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};
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});
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// Multiply all the constants together
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return {
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"const": const_data.reduce((x, y) => x * y),
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"infos": const_infos
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};
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};
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