const inputs = document.querySelectorAll(“#vdwForm input”);
const result = document.getElementById(“result”);
function calculateVDW() {
const P = parseFloat(document.getElementById(“P”).value) || 0;
const V = parseFloat(document.getElementById(“V”).value) || 0;
const T = parseFloat(document.getElementById(“T”).value) || 0;
const a = parseFloat(document.getElementById(“a”).value) || 0;
const b = parseFloat(document.getElementById(“b”).value) || 0;
const R = parseFloat(document.getElementById(“R”).value) || 0;
if (P && V && T && a && b && R) {
// Van der Waals Equation: [P + a(n/V)²] * (V – nb) = nRT
// We’ll solve iteratively for n
let n = 1; // initial guess
for (let i = 0; i {
input.addEventListener(“input”, () => {
calculateVDW();
// Google Analytics Event
if (typeof gtag === “function”) {
gtag(‘event’, ‘input_click’, {
‘event_category’: ‘Van der Waals Calculator’,
‘event_label’: input.id
});
}
});
});