اله حاسبه ملونه بلون مريح

7 8 9 + 4 5 6 - 1 2 3 ÷ 0 . = x

الكود

<blockquote> <style type="text/css">
* {
margin: 0;
padding: 0;
box-sizing: border-box;

font: bold 14px Arial, sans-serif;
}

html {
height: 100%;
background: white;
background: radial-gradient(circle, #fff 20%, #ccc);
background-size: cover;
}

#calculator {
width: 325px;
height: auto;

margin: 10px auto;
padding: 20px 20px 9px;

background: #9dd2ea;
background: linear-gradient(#9dd2ea, #8bceec);
border-radius: 3px;
box-shadow: 0px 4px #009de4, 0px 10px 15px rgba(0, 0, 0, 0.2);
}

.top span.clear {
float: left;
}

.top .screen {
height: 40px;
width: 212px;

float: right;

padding: 0 10px;

background: rgba(0, 0, 0, 0.2);
border-radius: 3px;
box-shadow: inset 0px 4px rgba(0, 0, 0, 0.2);

font-size: 17px;
line-height: 40px;
color: white;
text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.2);
text-align: right;
letter-spacing: 1px;
}

.keys, .top {overflow: hidden;}

.keys span, .top span.clear {
float: left;
position: relative;
top: 0;

cursor: pointer;

width: 66px;
height: 36px;

background: white;
border-radius: 3px;
box-shadow: 0px 4px rgba(0, 0, 0, 0.2);

margin: 0 7px 11px 0;

color: #888;
line-height: 36px;
text-align: center;

user-select: none;

transition: all 0.2s ease;
}

.keys span.operator {
background: #FFF0F5;
margin-right: 0;
}

.keys span.eval {
background: #f1ff92;
box-shadow: 0px 4px #9da853;
color: #888e5f;
}

.top span.clear {
background: #ff9fa8;
box-shadow: 0px 4px #ff7c87;
color: white;
}

.keys span:hover {
background: #9c89f6;
box-shadow: 0px 4px #6b54d3;
color: white;
}

.keys span.eval:hover {
background: #abb850;
box-shadow: 0px 4px #717a33;
color: #ffffff;
}

.top span.clear:hover {
background: #f68991;
box-shadow: 0px 4px #d3545d;
color: white;
}

.keys span:active {
box-shadow: 0px 0px #6b54d3;
top: 4px;
}

.keys span.eval:active {
box-shadow: 0px 0px #717a33;
top: 4px;
}

.top span.clear:active {
top: 4px;
box-shadow: 0px 0px #d3545d;
}
</style>
<body>
<div id="calculator">
<div class="top">
<span class="clear">C</span>
<div class="screen"></div>
</div>

<div class="keys">
<span>7</span>
<span>8</span>
<span>9</span>
<span class="operator">+</span>
<span>4</span>
<span>5</span>
<span>6</span>
<span class="operator">-</span>
<span>1</span>
<span>2</span>
<span>3</span>
<span class="operator">÷</span>
<span>0</span>
<span>.</span>
<span class="eval">=</span>
<span class="operator">x</span>
</div>
</div>

<script type="text/javascript">
var keys = document.querySelectorAll('#calculator span');
var operators = ['+', '-', 'x', '÷'];
var decimalAdded = false;

for(var i = 0; i < keys.length; i++) {
keys[i].onclick = function(e) {
var input = document.querySelector('.screen');
var inputVal = input.innerHTML;
var btnVal = this.innerHTML;

if(btnVal == 'C') {
input.innerHTML = '';
decimalAdded = false;
}
else if(btnVal == '=') {
var equation = inputVal;
var lastChar = equation[equation.length - 1];

equation = equation.replace(/x/g, '*').replace(/÷/g, '/');

if(operators.indexOf(lastChar) > -1 || lastChar == '.')
equation = equation.replace(/.$/, '');

if(equation)
input.innerHTML = eval(equation);

decimalAdded = false;
}
else if(operators.indexOf(btnVal) > -1) {
var lastChar = inputVal[inputVal.length - 1];

if(inputVal != '' && operators.indexOf(lastChar) == -1)
input.innerHTML += btnVal;

else if(inputVal == '' && btnVal == '-')
input.innerHTML += btnVal;

if(operators.indexOf(lastChar) > -1 && inputVal.length > 1) {
input.innerHTML = inputVal.replace(/.$/, btnVal);
}

decimalAdded =false;
}

else if(btnVal == '.') {
if(!decimalAdded) {
input.innerHTML += btnVal;
decimalAdded = true;
}
}

else {
input.innerHTML += btnVal;
}

e.preventDefault();
}
}
</script>
</body></blockquote></body>

اله حاسبه ملونه بلون مريح

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