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script.js
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window.onload = function () {
// initiliation des variables
var keys = document.getElementsByTagName('button'),
operators = ['/', '*', '-', '+', '%'],
lastOperator = '',
decimalAdded = false;
for (var i = 0; i < keys.length; i++) {
keys[i].onclick = function () {
// Ajouter des variables initiales
var keyValue = this.innerHTML,
previous = document.getElementById('previous'),
Previous_value = previous.innerHTML,
lastChar = Previous_value[Previous_value.length - 1],
current = document.getElementById('current-value');
// Use switch case for different function of keys
switch (keyValue) {
// Case for pour l'effaceur des nombres
case 'AC':
current.innerHTML = '';
previous.innerHTML = '';
break;
// voir for la calculation currente
case '=':
if (previous.innerHTML != '') {
current.innerHTML = eval(Previous_value);
previous.innerHTML = current.innerHTML;
if (((previous.innerHTML).includes("."))) {
decimalAdded = true;
}
}
else {
previous.innerHTML = current.innerHTML;
}
if (previous.innerHTML == "Infinity" || current.innerHTML == "Infinity") {
previous.innerHTML = "";
}
resultLength = (current.innerHTML).length;
if (resultLength > 14) {
current.innerHTML = (current.innerHTML).substring(0, 12);
previous.innerHTML = current.innerHTML;
}
break;
// Case for pour les chiffres arithmetiques
case '/':
case '*':
case '-':
case '+':
case '%':
if (Previous_value != '' && operators.indexOf(lastChar) == -1) {
previous.innerHTML += keyValue;
}
else {
previous.innerHTML = previous.innerHTML.replace(/.$/, keyValue);
}
decimalAdded = false;
lastOperator = keyValue;
break;
// Case for delete char
case 'DEL':
decimalAdded = false;
previous.innerHTML = previous.innerHTML.replace(/.$/, '');
current.innerHTML = eval(previous.innerHTML);
if (current.innerHTML == "undefined") {
current.innerHTML = "0";
}
break;
// Case for pour ajouter un period
case '.':
if (!decimalAdded) {
if ((lastChar == ")")) {
return;
}
else {
previous.innerHTML += keyValue;
decimalAdded = true;
}
}
break;
case '+/-':
if (Previous_value != '' && operators.indexOf(lastChar) == -1) {
if (lastOperator == '') {
if (Previous_value == Math.abs(Previous_value)) {
previous.innerHTML = -(Previous_value);
} else {
previous.innerHTML = Math.abs(eval(Previous_value));
}
} else {
var array = previous.innerHTML.split(lastOperator),
lastIndex = array.length - 1,
newDetail = '',
oldDetail = '';
if (array[lastIndex] == Math.abs(array[lastIndex])) {
newDetail = '(' + -(array[lastIndex]) + ')';
} else {
newDetail = Math.abs(eval(array[lastIndex]));
}
for (var i = 0; i < lastIndex; i++) {
oldDetail += array[i] + lastOperator;
}
previous.innerHTML = oldDetail + newDetail;
}
}
break;
default:
detailLength = (previous.innerHTML).length;
if (detailLength >= 27) {
previous.innerHTML += keyValue;
previous.innerHTML = (previous.innerHTML).slice(0, -1);
console.log(previous.innerHTML);
console.log(previous.innerHTML);
return
}
if ((lastChar == ")")) {
return;
}
else {
previous.innerHTML += keyValue;
}
break;
}
}
}
}