Octavia/odin-calculator
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Handle floating point issues

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This commit is contained in:
lolabird 2023-12-27 01:51:17 -07:00
commit 23fb4be135
1 changed files with 17 additions and 3 deletions
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20
script.js
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@ -26,7 +26,7 @@ function displayToScreen() {
let screenContent = screen.textContent; let screenContent = screen.textContent;
// Add some logic for handling negatives with - // Add some logic for handling negatives with -
// Handle decimals add 0 on a trailing decimal point // 0 on a trailing decimal point
// Add key support // Add key support
for (let i = 0; i < screenContent.length; i++ ) { for (let i = 0; i < screenContent.length; i++ ) {
@ -50,12 +50,26 @@ function displayToScreen() {
} }
function addDecimals(a, b) {
a = String(a);
b = String(b);
const adec = (a.split(".")[1] || "").length;
const bdec = (b.split(".")[1] || "").length;
const maxdec = Math.max(adec, bdec);
let divdec = "1";
divdec = divdec.padEnd(maxdec, "0");
return ((+a * divdec + +b * divdec) / divdec).toFixed(maxdec);
}
function Calculator(str) { function Calculator(str) {
console.log("Calculator has been called") console.log("Calculator has been called")
this.methods = { this.methods = {
"-": (a, b) => (a - b), "-": (a, b) => addDecimals(a, -b),
"+": (a, b) => (a + b), "+": (a, b) => addDecimals(a, b),
"/": (a, b) => (a / b), "/": (a, b) => (a / b),
"*": (a, b) => (a * b) "*": (a, b) => (a * b)
}; };