From ad2c99ba0c1e6772860226c4459849f9f1dcfdc4 Mon Sep 17 00:00:00 2001
From: Joris
Date: Mon, 3 May 2021 21:15:54 +0200
Subject: Fix number inputs

---
 public/main.js | 27 ++++++++++++++++++++-------
 1 file changed, 20 insertions(+), 7 deletions(-)

diff --git a/public/main.js b/public/main.js
index 68deeee..24d2f8d 100644
--- a/public/main.js
+++ b/public/main.js
@@ -6,7 +6,7 @@ window.onload = function() {
   document.querySelectorAll('.number').forEach(function (number) {
 
     // Install input
-    const value = parseInt(number.innerHTML)
+    const value = parseFloat(number.innerHTML)
     number.innerHTML = `<input value="${value}">`
 
     // Push to inputs
@@ -28,7 +28,7 @@ window.onload = function() {
         // Apply factor to other inputs
         inputs.forEach(function (input) {
           if (input.element !== currentInput.element) {
-            input.element.value = formatNumber(factor * input.value)
+            input.element.value = formatNumber(factor, input.value)
           }
         })
       }
@@ -45,11 +45,24 @@ window.onload = function() {
 
 }
 
-function formatNumber(n) {
-  const xs = n.toString().split('.')
-  if (xs.length == 2) {
-    return `${xs[0]}.${xs[1].slice(0, 1)}`
+function formatNumber(factor, value) {
+  if (factor === 1) {
+    return value
   } else {
-    return n
+    const n = factor * value
+    const xs = n.toString().split('.')
+    const p = precision(value) || 1
+    if (xs.length == 2) {
+      return `${xs[0]}.${xs[1].slice(0, p)}`
+    } else {
+      return n
+    }
+  }
+}
+
+function precision(value) {
+  const xs = value.toString().split('.')
+  if (xs.length === 2) {
+    return xs[1].length
   }
 }
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