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script.js
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script.js
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$(function () {
var lastPressed = '';
var coma = false;
$('.num').click(function () {
var value = $(this).val();
var firstChar = $('#result').text().substring(0, 1);
var secondChar = $('#result').text().substring(1, 2);
var isZero = false;
firstChar === '0' ? isZero = true : isZero = false;
if (lastPressed == 'opr' && secondChar !== '.') {
$('#result').html(value);
}
else {
if (isZero && secondChar !== '.') {
$('#result').html(value);
}
else {
$('#result').append(value);
}
}
lastPressed = 'num';
});
$('.specialOpr').click(function(){
var value = $(this).val();
var result = $('#result').text();
var firstChar = result.substring(0, 1);
if(value == '.' && !coma){
if(lastPressed == 'opr'){
$('#result').html('0.');
}
else{
$('#result').append('.');
}
lastPressed = '.';
coma = true;
}
else if(value == '+/-'){
if($.isNumeric(firstChar)){
$('#result').prepend('-');
}
else{
$('#result').html(result.substring(1,result.length));
}
lastPressed = 'opr';
}
});
$('.opr').click(function () {
var value = $(this).val();
var operand = $('#result').text();
var lastChar = $('#progress').text();
lastChar = lastChar.substring(lastChar.length - 1, lastChar.length);
if( value == 'CE' ){
$('#result').html('0');
}
else if(value == 'C'){
$('#progress').html('');
$('#result').html('0');
}
else if(value == '<--'){
if (operand.length > 1) {
$('#result').html(operand.substring(0, operand.length - 1));
}
else {
$('#result').html(0);
}
}
else if (value == '÷' || value == 'x' || value == '+' || value == '-'){
if (lastPressed == 'num') {
var progress = $('#progress').text();
progress += $('#result').text();
number1 = '';
number2 = '';
var opr = '';
for (var i = 0; i < progress.length + 1; i++) {
if(progress[i] == '-' && i == 0){
number1 += progress[i];
}
else if (($.isNumeric(progress[i]) || progress[i] == '.') && opr === '' && number2 === '') {
number1 += progress[i];
}
else if (progress[i] === '÷' || progress[i] === '+' || progress[i] === '-' || progress[i] === 'x') {
opr = progress[i];
}
else if (($.isNumeric(progress[i]) || progress[i] == '.') && opr !== '') {
number2 += progress[i];
}
else if (number1 !== '' && opr !== '' && number2 !== '') { // yang dikali dan dibagi 10000 ini spy ga ancur angka e karena javascript ga akurat 100% hitungannya
if (opr == '+') {
number1 = parseFloat(number1) + parseFloat(number2 );
}
else if (opr == '-') {
number1 = (parseFloat(number1 * 10000) - parseFloat(number2 * 10000)) / 10000;
}
else if (opr == '÷') {
number1 = parseFloat(number1 * 10000) / parseFloat(number2 * 10000);
}
else if (opr == 'x') {
number1 = parseFloat(number1) * parseFloat(number2);
}
number2 = '';
}
}
$('#result').html(number1);
$('#progress').append(' ' + operand + ' ' + value);
}
else {
$('#progress').html(operand + ' ' + value);
}
}
else if(value == '='){
if (lastChar == '=') {
var lastResult = $('#result').text();
var progress = $('#progress').text();
progress += $('#result').text();
var tempResult = '';
var lastNumber = '';
var lastOpr = '';
var done = false;
for (var i = progress.indexOf('='); !done; i--) {
if (($.isNumeric(progress[i] || progress[i] == '-') || progress[i] == '.')) {
lastNumber = progress[i] + lastNumber;
}
else if (progress[i] == '÷' || progress[i] == '+' || progress[i] == '-' || progress[i] == 'x') {
lastOpr = progress[i];
done = true;
}
}
if (lastOpr == '+') {
tempResult = parseFloat(lastResult) + parseFloat(lastNumber);
}
else if (lastOpr == '-') {
tempResult = (parseFloat(lastResult * 10000) - parseFloat(lastNumber * 10000))/10000;
}
else if (lastOpr == '÷') {
tempResult = parseFloat(lastResult * 10000) / parseFloat(lastNumber * 10000);
}
else if (lastOpr == 'x') {
tempResult = parseFloat(lastResult) * parseFloat(lastNumber);
}
$('#progress').html(lastResult + ' ' + lastOpr + ' ' + lastNumber + ' =');
$('#result').html(tempResult);
}
else {
var progress = $('#progress').text();
progress += $('#result').text();
number1 = '';
number2 = '';
var opr = '';
for (var i = 0; i < progress.length + 1; i++) {
if(progress[i] == '-' && i == 0){
number1 += progress[i];
}
else if (($.isNumeric(progress[i]) || progress[i] == '.') && opr === '' && number2 === '') {
number1 += progress[i];
}
else if (progress[i] === '÷' || progress[i] === '+' || progress[i] === '-' || progress[i] === 'x') {
opr = progress[i];
}
else if (($.isNumeric(progress[i]) || progress[i] == '.') && opr !== '') {
number2 += progress[i];
}
else if (number1 !== '' && opr !== '' && number2 !== '') {
if (opr == '+') {
number1 = parseFloat(number1) + parseFloat(number2 );
}
else if (opr == '-') {
number1 = (parseFloat(number1 * 10000) - parseFloat(number2 * 10000)) / 10000;
}
else if (opr == '÷') {
number1 = parseFloat(number1 * 10000) / parseFloat(number2 * 10000);
}
else if (opr == 'x') {
number1 = parseFloat(number1) * parseFloat(number2);
}
number2 = '';
}
}
$('#result').html(number1);
$('#progress').append(' ' + operand + ' =');
}
}
lastPressed = 'opr';
coma = false;
});
});