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style: format code with StandardJS #84

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264 changes: 129 additions & 135 deletions script.js
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Original file line number Diff line number Diff line change
@@ -1,251 +1,245 @@
// Initialize an empty string to store the user input
let inputString = '';
let inputString = ''

// Select the input field
const inputField = document.querySelector('input');
const resultDisplay = document.querySelector('#results');
const operators = ['+','-','*','/'];

const inputField = document.querySelector('input')
const resultDisplay = document.querySelector('#results')
const operators = ['+', '-', '*', '/']

// Select all the calculator buttons on the page
const calculatorButtons = document.querySelectorAll('button');
const calculatorButtons = document.querySelectorAll('button')

// Select the body element
const bodyElement = document.body;
const bodyElement = document.body

const parentBox = document.querySelector('.parent');
const parentBox = document.querySelector('.parent')

function generateRandomGradient() {
function generateRandomGradient () {
// Generate random colors
const color1 = getRandomColor();
const color2 = getRandomColor();
const color1 = getRandomColor()
const color2 = getRandomColor()

// Generate a random angle between 0 and 360 degrees
const angle = Math.floor(Math.random() * 360);
const angle = Math.floor(Math.random() * 360)

// Create the linear gradient string
const gradient = `linear-gradient(${angle}deg, ${color1}, ${color2})`;
const gradient = `linear-gradient(${angle}deg, ${color1}, ${color2})`

// return the generated linear gradient
return gradient;
return gradient
}

function getRandomColor() {
function getRandomColor () {
// Generate a random hexadecimal color code
const letters = '0123456789ABCDEF';
let color = '#';
const letters = '0123456789ABCDEF'
let color = '#'
for (let i = 0; i < 6; i++) {
color += letters[Math.floor(Math.random() * 16)];
color += letters[Math.floor(Math.random() * 16)]
}
color += '80'; // so that the background is not a solid color
return color;
color += '80' // so that the background is not a solid color
return color
}

// Function to change the background color
function changeBackgroundColor() {
bodyElement.style.background = generateRandomGradient();
parentBox.classList.add('box-highlight');
function changeBackgroundColor () {
bodyElement.style.background = generateRandomGradient()
parentBox.classList.add('box-highlight')

// Add a button press effect to the parent container
setTimeout(() => {
parentBox.classList.remove('box-highlight');
}, 200);
parentBox.classList.remove('box-highlight')
}, 200)
}

function animateValueChange(element, end, duration) {
let startValue = parseFloat(element.value) || 0; // Start from the current value
let startOpacity = 0; // Start from opacity 0
let startTimestamp = null;
function animateValueChange (element, end, duration) {
const startValue = parseFloat(element.value) || 0 // Start from the current value
const startOpacity = 0 // Start from opacity 0
let startTimestamp = null

const step = (timestamp) => {
if (!startTimestamp) startTimestamp = timestamp;
const progress = Math.min((timestamp - startTimestamp) / duration, 1);
if (!startTimestamp) startTimestamp = timestamp
const progress = Math.min((timestamp - startTimestamp) / duration, 1)

const interpolatedOpacity = progress;
const interpolatedOpacity = progress

// Update the value and opacity (don't change anything other than alpha though, get the elements r, g, and b)
element.value = end;
element.value = end
// Get R G and B of the text
const rgb = window.getComputedStyle(element).color.match(/\d+/g);
const r = rgb[0];
const g = rgb[1];
const b = rgb[2];
element.style.color = `rgba(${r}, ${g}, ${b}, ${interpolatedOpacity})`;
const rgb = window.getComputedStyle(element).color.match(/\d+/g)
const r = rgb[0]
const g = rgb[1]
const b = rgb[2]
element.style.color = `rgba(${r}, ${g}, ${b}, ${interpolatedOpacity})`

if (progress < 1) {
window.requestAnimationFrame(step);
window.requestAnimationFrame(step)
}
};
}

window.requestAnimationFrame(step);
window.requestAnimationFrame(step)
}



// Function to calculate and display the result
function calculateResult() {
const inputValue = inputField.value;
function calculateResult () {
const inputValue = inputField.value
try {
// Replace percentage symbol (%) with '/100' before evaluation
inputString = inputValue.replace(/%/g, '/100');
inputString = inputValue.replace(/%/g, '/100')
// Replace √(first digit group) with 'Math.sqrt()' function for that digit group before evaluation
inputString = inputValue.replace(/√([+-]*\d+)/g, 'Math.sqrt($1)');


inputString = inputValue.replace(/√([+-]*\d+)/g, 'Math.sqrt($1)')

// Evaluate the user input as a mathematical expression using eval
const result = eval(inputString);
const result = eval(inputString)

// Display the result in the second input field
animateValueChange(resultDisplay, result, 500);
animateValueChange(resultDisplay, result, 500)

// Revert back the Math.sqrt() function
inputString = inputValue.replace(/Math.sqrt\((\d+)\)/g, '√$1');
inputString = inputValue.replace(/Math.sqrt\((\d+)\)/g, '√$1')

// Change the background color here
changeBackgroundColor();
changeBackgroundColor()
} catch (error) {
// Handle invalid expressions
navigator.vibrate(200);
inputField.value = '';
inputString = '';
resultDisplay.value = error.message; // Clear the dashboard on error
navigator.vibrate(200)
inputField.value = ''
inputString = ''
resultDisplay.value = error.message // Clear the dashboard on error
}
}

// Function to continuously update the result as the user types or presses buttons
function updateResult() {
inputString = inputField.value;
function updateResult () {
inputString = inputField.value

try {
// Check if the inputString is not empty and contains a valid expression
if (inputString) {
const result = eval(inputString);
animateValueChange(resultDisplay, result, 500);
const result = eval(inputString)
animateValueChange(resultDisplay, result, 500)
} else {
resultDisplay.value = ''; // Clear the dashboard if the input is empty
resultDisplay.value = '' // Clear the dashboard if the input is empty
}
} catch (error) {
resultDisplay.value = ''; // Clear the dashboard on error
resultDisplay.value = '' // Clear the dashboard on error
}
}

// Add an event listener to each button
calculatorButtons.forEach((button) => {
button.addEventListener('click', () => {
const buttonValue = button.textContent;
const buttonValue = button.textContent

switch (buttonValue) {
case '=':
// Check if the inputString is not empty and contains a valid expression
if (inputString) {
calculateResult();
calculateResult()
}
break;
break
case 'C':
// Clear the inputString and reset the input field
inputString = '';
inputField.value = inputString;
inputString = ''
inputField.value = inputString
// claer the Display field
resultDisplay.value = '';
break;
resultDisplay.value = ''
break
case 'M+':
// Add the current input value to the memory value
memoryValue += parseFloat(inputField.value) || 0;
inputString = '';
break;
memoryValue += parseFloat(inputField.value) || 0
inputString = ''
break
case 'M-':
// Subtract the current input value from the memory value
memoryValue -= parseFloat(inputField.value) || 0;
inputString = '';
break;
memoryValue -= parseFloat(inputField.value) || 0
inputString = ''
break
case 'sin':
inputField.value = Math.sin(parseFloat(inputField.value));
inputString = inputField.value.toString();
break;
inputField.value = Math.sin(parseFloat(inputField.value))
inputString = inputField.value.toString()
break
case 'cos':
inputField.value = Math.cos(parseFloat(inputField.value));
inputString = inputField.value.toString();
break;
inputField.value = Math.cos(parseFloat(inputField.value))
inputString = inputField.value.toString()
break
case 'tan':
inputField.value = Math.tan(parseFloat(inputField.value));
inputString = inputField.value.toString();
break;
inputField.value = Math.tan(parseFloat(inputField.value))
inputString = inputField.value.toString()
break
case '^':
const num = parseFloat(inputField.value);
const result = num * num;
//inputString = result.toString();
break;
const num = parseFloat(inputField.value)
const result = num * num
// inputString = result.toString();
break
case '√':
// inputField.value = Math.sqrt(parseFloat(inputField.value));

// Check if input field value is empty and if it is, not then √ should precede *
const inputFieldValueLength = inputField.value.length;
if(inputFieldValueLength != 0 && !operators.includes(inputField.value[inputFieldValueLength - 1]))
inputField.value += '*';
inputField.value += '√';
inputString = inputField.value.toString();
const inputFieldValueLength = inputField.value.length
if (inputFieldValueLength != 0 && !operators.includes(inputField.value[inputFieldValueLength - 1])) { inputField.value += '*' }
inputField.value += '√'
inputString = inputField.value.toString()

break;
break
case 'log':
inputField.value = Math.log(parseFloat(inputField.value));
inputString = inputField.value.toString();
break;
inputField.value = Math.log(parseFloat(inputField.value))
inputString = inputField.value.toString()
break
case 'π':
inputField.value += Math.PI.toFixed(3);
inputString = inputField.value.toString();
break;
inputField.value += Math.PI.toFixed(3)
inputString = inputField.value.toString()
break
case 'e':
inputField.value = Math.E;
inputString = inputField.value.toString();
break;
inputField.value = Math.E
inputString = inputField.value.toString()
break
case 'X!':
const numX = parseFloat(inputField.value);
let factorial = 1;
const numX = parseFloat(inputField.value)
let factorial = 1
for (let i = 1; i <= numX; i++) {
factorial *= i;
factorial *= i
}
inputString = factorial.toString();
break;
inputString = factorial.toString()
break
case 'CE':
inputField.value = inputField.value.slice(0, -1);
inputString = inputField.value;
break;
inputField.value = inputField.value.slice(0, -1)
inputString = inputField.value
break
default:
// Append the clicked button's value to the input field
inputString += buttonValue;
inputField.value = inputString;
updateResult(); // Update the result as you add operators
break;
inputString += buttonValue
inputField.value = inputString
updateResult() // Update the result as you add operators
break
}
});
});
inputField.addEventListener('input', updateResult);
})
})
inputField.addEventListener('input', updateResult)

// Set the date we're counting down to
var countDownDate = new Date("Oct 31, 2023 23:59:59").getTime();
const countDownDate = new Date('Oct 31, 2023 23:59:59').getTime()

// Update the count down every 1 second
var x = setInterval(function() {

var x = setInterval(function () {
// Get today's date and time
var now = new Date().getTime();
const now = new Date().getTime()

// Find the distance between now and the count down date
var distance = countDownDate - now;
const distance = countDownDate - now

// Time calculations for days, hours, minutes and seconds
var days = Math.floor(distance / (1000 * 60 * 60 * 24));
var hours = Math.floor((distance % (1000 * 60 * 60 * 24)) / (1000 * 60 * 60));
var minutes = Math.floor((distance % (1000 * 60 * 60)) / (1000 * 60));
var seconds = Math.floor((distance % (1000 * 60)) / 1000);
const days = Math.floor(distance / (1000 * 60 * 60 * 24))
const hours = Math.floor((distance % (1000 * 60 * 60 * 24)) / (1000 * 60 * 60))
const minutes = Math.floor((distance % (1000 * 60 * 60)) / (1000 * 60))
const seconds = Math.floor((distance % (1000 * 60)) / 1000)

// Display the result in the element with id="demo"
document.getElementById("timer-text").innerHTML = "Ends in " + days + "d " + hours + "h "
+ minutes + "m " + (seconds < 10 ? "0" : "") + seconds + "s ";
document.getElementById('timer-text').innerHTML = 'Ends in ' + days + 'd ' + hours + 'h ' +
minutes + 'm ' + (seconds < 10 ? '0' : '') + seconds + 's '

// If the count down is finished, write some text
if (distance < 0) {
clearInterval(x);
document.getElementById("timer-text").innerHTML = "ENDED";
clearInterval(x)
document.getElementById('timer-text').innerHTML = 'ENDED'
}
}, 1000);
}, 1000)