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calculator.js
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const pushables = document.querySelectorAll(".pushable");
const display = document.querySelector("#display p");
let numbersNew = "";
let operation = "";
let theme = 1;
let storageTheme = localStorage.getItem(`prefers-color-scheme`);
if (storageTheme != null) {
toggleTheme(parseInt(storageTheme));
}
// function convertNumbersAndDisplay(itemToDisplay){
// toDisplay = itemToDisplay.join('')
// if (toDisplay.length >= 12){
// toDisplay = toDisplay.toExponential()
// }
// display.innerText = toDisplay
// }
function preformCalculation(operation) {
sessionStorage.setItem("operation", operation);
let numbersOld = sessionStorage.getItem("numbersNew");
sessionStorage.setItem("numbersOld", numbersOld);
numbersNew = "";
sessionStorage.setItem("numbersNew", numbersNew);
display.innerText = numbersNew;
}
function calculate(num) {
if (num == "RESET") {
sessionStorage.setItem("numbersNew", "");
sessionStorage.setItem("numbersOld", "");
display.innerText = 0;
} else if (num == "DEL") {
let numbersNew = sessionStorage.getItem("numbersNew");
numbersNew = numbersNew.slice(0, -1);
sessionStorage.setItem("numbersNew", numbersNew);
display.innerText = numbersNew;
} else if (num == "X") {
operation = "*";
preformCalculation(operation);
} else if (num == "-") {
operation = "-";
preformCalculation(operation);
} else if (num == "+") {
operation = "+";
preformCalculation(operation);
} else if (num == "/") {
operation = "/";
preformCalculation(operation);
} else if (num == "=") {
let numbersOld = sessionStorage.getItem("numbersOld");
let numbersNew = sessionStorage.getItem("numbersNew");
let operation = sessionStorage.getItem("operation");
let mathSet = numbersOld + operation + numbersNew;
let total = eval(mathSet);
display.innerText = total;
numbersNew = total;
sessionStorage.setItem("numbersNew", total);
// console.log(numbers)
} else {
let numbersNew = sessionStorage.getItem("numbersNew");
numbersNew += num;
sessionStorage.setItem("numbersNew", numbersNew);
display.innerText = numbersNew;
}
}
// setting up sessionstorage to avoid a null message
sessionStorage.setItem("numbersNew", "");
pushables.forEach((btn) => {
btn.addEventListener("click", (event) => {
calculate(event.target.innerText);
});
});
//###########################
//
// Themes
//
//###########################
let toggle_dot = $(".toggle-trough .toggle-dot");
let themeID1 = $("#1");
let themeID2 = $("#2");
let themeID3 = $("#3");
let toggle_trough = $(".toggle-trough");
function toggleTheme(theme) {
if (theme == 1) {
document.querySelector(".toggle-dot").style["left"] = "2px";
document.querySelector("body").id = "theme1";
localStorage.setItem(`prefers-color-scheme`, 1);
} else if (theme == 2) {
document.querySelector(".toggle-dot").style["left"] = "23px";
document.querySelector("body").id = "theme2";
localStorage.setItem(`prefers-color-scheme`, 2);
} else if (theme == 3) {
document.querySelector(".toggle-dot").style["left"] = "52px";
document.querySelector("body").id = "theme3";
localStorage.setItem(`prefers-color-scheme`, 3);
}
}
themeID1.click(function () {
toggleTheme(1);
});
themeID2.click(function () {
toggleTheme(2);
});
themeID3.click(function () {
toggleTheme(3);
});
toggle_trough.click(function () {
let themeVar = $(".theme")[0]["id"];
themeVar = parseInt(themeVar.slice(-1));
if (themeVar == 1) {
toggleTheme(2);
} else if (themeVar == 2) {
toggleTheme(3);
} else if (themeVar == 3) {
toggleTheme(1);
}
});
toggle_dot.draggable({
axis: "x",
containment: "parent",
stop: function () {
let switchPosition = document.querySelector(".toggle-dot").style["left"];
switchCurrentPosition = switchPosition.replace("px", "");
switchCurrentPosition = parseInt(switchCurrentPosition);
if (switchCurrentPosition < 14) {
//theme1 snap to 2
toggleTheme(1);
} else if (switchCurrentPosition >= 14 && switchCurrentPosition <= 35) {
//theme2 snap to 23
toggleTheme(2);
} else if (switchCurrentPosition > 35) {
//theme3 snap to 52
toggleTheme(3);
}
},
});