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replaced2.html
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<!--sorry no bootstrap is used--->
<!-- pruthviraj created this -->
<html>
<head>
<script>
function insert(num){
document.form.textview.value = document.form.textview.value+num
document.getElementById("demo1").style.backgroundColor = "red";
}
function equal(){
var exp = document.form.textview.value
if(exp){
document.form.textview.value = eval(exp)
}
}
function clean(){
document.form.textview.value = ""
}
function back(){
var exp = document.form.textview.value
document.form.textview.value = exp.substring(0,exp.length-1)
}
function myFunction() {
document.getElementById("demo1").style.backgroundColor = "red";
}
</script>
<style>
*{
margin: 0;
padding: 0;
}
.button{
width: 50;
height: 50;
font-size: 25;
margin: 2;
cursor: pointer;
background: #e76868;
border: none;
}
.textview{
width: 217;
margin: 5;
font-size: 25;
padding: 5;
border: none;
color: #071066;
}
.main{
position: absolute;
top: 50%;
left: 50%;
transform: translateX(-50%) translateY(-50%);
align-content: center;
align-items: center;
}
body{
background-image : url("https://wallpaperaccess.com/full/237627.jpg");
}
h2{
color:#f1d2d2;
position :absolute;
font-size:21px;
transform: translateX(45%) translateY(70%);
}
h3{
color:#b9a8eb;
position :absolute;
font-size:40px;
transform: translateX(190%) translateY(150%);
}
</style>
</head>
<body>
<h2>/you can take input from keyboard aslo> > here note color is changing when input is given <!--sorry no bootstrap is used---></h2>
<!--sorry no bootstrap is used & i know textview also passes the character also suggest an edit for this--->
<h3>King's calculator</h3>
<div class="main">
<form name="form">
<input class="textview" name="textview" type ="text" id ="demo1" onkeydown="insert(num) ;myfunction()" >
</form>
<table>
<tr>
<td><input class ="button" type="button" value="C" onclick="clean()"></td>
<td><input class ="button" type="button" value="<" onclick="back()"></td>
<td><input class ="button" type="button" value="/" onclick="insert('/')"></td>
<td><input class ="button" type="button" value="X" onclick="insert('*')"></td>
</tr>
<tr>
<td><input class ="button" type="button" value="7" onclick="insert(7)"></td>
<td><input class ="button" type="button" value="8" onclick="insert(8)"></td>
<td><input class ="button" type="button" value="9" onclick="insert(9)"></td>
<td><input class ="button" type="button" value="-" onclick="insert('-')"></td>
</tr>
<tr>
<td><input class ="button" type="button" value="4" onclick="insert(4)"></td>
<td><input class ="button" type="button" value="5" onclick="insert(5)"></td>
<td><input class ="button" type="button" value="6" onclick="insert(6)"></td>
<td><input class ="button" type="button" value="+" onclick="insert('+')"></td>
</tr>
<tr>
<td><input class ="button" type="button" value="1" onclick="insert(1)"></td>
<td><input class ="button" type="button" value="2" onclick="insert(2)"></td>
<td><input class ="button" type="button" value="3" onclick="insert(3)"></td>
<td rowspan=5><input class ="button" style="height:106" type="button" value="=" onclick="equal()"></td>
</tr>
<tr>
<td colspan=2><input class ="button" style="width:106" type="button" value="0" onclick="insert(0)"></td>
<td><input class ="button" type="button" value="." onclick="insert('.')"></td>
</tr>
</table>
</div>
</div>
</body>
</html>