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main.js
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main.js
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// All Elements
let result = document.querySelector(".calculator .result span");
let operationBtn = document.querySelectorAll(".calculator .op");
let nbr = document.querySelectorAll(".calculator .btn.nbr");
let reset = document.querySelector(".reset");
let del = document.querySelector(".calculator .btn.del");
let equal = document.querySelector(".calculator .equal");
let neg = document.querySelector(".calculator .neg");
let toggle = document.querySelector(".toggle");
let span = document.querySelector(".toggle span");
// variables
let firstElement = "";
let secondElement = "";
let op = "";
let nb = false;
// Delete everything
reset.addEventListener("click", resetAll);
// delete number
del.onclick = () => {
fixedProblems();
result.innerHTML = result.innerHTML.slice(0, result.innerHTML.length - 1);
};
nbr.forEach((e) => {
e.onclick = () => {
fixedProblems();
if (nb == true) {
result.innerHTML = "";
}
result.innerHTML += e.textContent;
let myNumber = result.innerHTML;
nb = false;
if (/^0+/gi.test(myNumber)) {
result.innerHTML = myNumber.toString().replace(/(^0+)/gi, "0");
}
};
});
// Keep the first number and the operation
operationBtn.forEach((e) => {
fixedProblems();
e.onclick = (ele) => {
if (result.innerHTML == "") {
ele.preventDefault();
} else {
if (op == "") {
firstElement = result.innerHTML;
}
op = e.dataset.val;
nb = true;
result.innerHTML = op;
}
};
});
// Make the Number negative
neg.onclick = () => {
result.innerHTML = parseFloat(result.innerHTML) * -1;
};
// The result of the calculation
equal.onclick = (e) => {
fixedProblems();
if (
result.innerHTML == "/" ||
result.innerHTML == "*" ||
result.innerHTML == "-" ||
result.innerHTML == "+"
) {
e.preventDefault();
} else {
secondElement = result.innerHTML;
switch (op) {
case "*":
result.innerHTML = parseFloat(firstElement) * parseFloat(secondElement);
break;
case "/":
result.innerHTML = parseFloat(firstElement) / parseFloat(secondElement);
break;
case "+":
result.innerHTML = parseFloat(firstElement) + parseFloat(secondElement);
break;
case "-":
result.innerHTML = parseFloat(firstElement) - parseFloat(secondElement);
break;
}
op = "";
firstElement = "";
nb = false;
}
};
// DarK Mode
window.onload = function () {
darkMode(localStorage.getItem("active"));
};
toggle.addEventListener("click", () => {
span.classList.toggle("active");
if (span.classList.contains("active")) {
localStorage.setItem("active", "dark");
darkMode(localStorage.getItem("active"));
} else {
localStorage["active"] = "white";
darkMode(localStorage.getItem("active"));
}
});
// Toggle Dark Mode With Local Storage
function darkMode(value) {
if (value == "dark") {
span.classList.add("active");
document.documentElement.style.setProperty("--bg-body-color", "#17062a");
document.documentElement.style.setProperty("--result-color", "#1e0836");
document.documentElement.style.setProperty("--bg-row-btn-color", "#1e0836");
document.documentElement.style.setProperty("--bg-btn-color", "#321b4c");
document.documentElement.style.setProperty("--border-btn-color", "#7b2291");
document.documentElement.style.setProperty("--del-reset-color", "#56077d");
document.documentElement.style.setProperty(
"--border-del-reset-color",
"#a923db"
);
document.documentElement.style.setProperty("--bg-equal-color", "#00dfcf");
document.documentElement.style.setProperty(
"--border-equal-color",
"#89e8f2"
);
document.documentElement.style.setProperty("--black-color", "#f3de60");
document.documentElement.style.setProperty("--bg-toggle-color", "#1e0836");
} else {
document.documentElement.style.setProperty("--bg-body-color", "#e6e6e6");
document.documentElement.style.setProperty("--result-color", "#eeeeee");
document.documentElement.style.setProperty("--bg-row-btn-color", "#d3cdcd");
document.documentElement.style.setProperty("--bg-btn-color", "#e5e4e0");
document.documentElement.style.setProperty("--border-btn-color", "#a29e96");
document.documentElement.style.setProperty("--del-reset-color", "#378285");
document.documentElement.style.setProperty(
"--border-del-reset-color",
"#24666d"
);
document.documentElement.style.setProperty("--bg-equal-color", "#ce4030");
document.documentElement.style.setProperty(
"--border-equal-color",
"#902720"
);
document.documentElement.style.setProperty("--black-color", "#383732");
document.documentElement.style.setProperty(
"--bg-toggle-color",
"#ce40301a"
);
}
}
function fixedProblems() {
if (result.innerHTML == "Infinity" || result.innerHTML == "NaN") {
resetAll();
}
}
function resetAll() {
result.innerHTML = "";
firstElement = "";
secondElement = "";
op = "";
nb = false;
}