• Calculator in HTML and Javascript


    <html>
    <h3>Calculator made by Pradeep</h3>
    <style>
     body
    {
    background-color:tan;
    }
    .box
    {
    background-color:#3d4543;
    height:300px;
    width:250px;
    border-radius:10px;
    position:relative;
    top:80px;
    left:40%;
    }
    .display
    {
    background-color:#222;
    width:220px;
    position:relative;
    left:15px;
    top:20px;
    height:40px;
    }
    .display input
    {
    position:relative;
    left:2px;
    top:2px;
    height:35px;
    color:black;
    background-color:#bccd95;
    font-size:21px;
    text-align:right;
    }
    .keys
    {
    position:relative;
    top:15px;
    }
    .button
    {
    width:40px;
    height:30px;
    border:none;
    border-radius:8px;
    margin-left:17px;
    cursor:pointer;
    border-top:2px solid transparent;
    }
    .button.gray
    {
    color:white;
    background-color:#6f6f6f;
    border-bottom:black 2px solid;
    border-top:2px #6f6f6f solid;
    }
    .button.pink
    {
    color:black;
    background-color:#ff4561;
    border-bottom:black 2px solid;
    }
    .button.black
    {
    color:white;
    background-color:303030;
    border-bottom:black 2px solid;
    border-top:2px 303030 solid;
    }
    .button.orange
    {
    color:black;
    background-color:FF9933;
    border-bottom:black 2px solid;
    border-top:2px FF9933 solid;
    }
    .gray:active
    {
    border-top:black 2px solid;
    border-bottom:2px #6f6f6f solid;
    }
    .pink:active
    {
    border-top:black 2px solid;
    border-bottom:#ff4561 2px solid;
    }
    .black:active
    {
    border-top:black 2px solid;
    border-bottom:#303030 2px solid;
    }
    .orange:active
    {
    border-top:black 2px solid;
    border-bottom:FF9933 2px solid;
    }
    p
    {
    line-height:10px;
    }
    </style>
    <div class="box">
    <div class="display"><input type="text" readonly size="15" id="d"></div>
    <div class="keys">
       
        <input type="button" class="button pink"

        value="/" onclick='v("/")'></p>
        <p><input type="button" class="button black"

        value="7" onclick='v("7")'><input type="button"

        class="button black" value="8" onclick='v("8")'>
        <input type="button" class="button black" value="9"

        onclick='v("9")'><input type="button"

        class="button pink" value="*" onclick='v("*")'></p>
        <p><input type="button" class="button black"

        value="4" onclick='v("4")'><input type="button"

        class="button black" value="5" onclick='v("5")'>
        <input type="button" class="button black" value="6"

        onclick='v("6")'><input type="button"

        class="button pink" value="-" onclick='v("-")'></p>
        <p><input type="button" class="button black"

        value="1" onclick='v("1")'><input type="button"

        class="button black" value="2" onclick='v("2")'>
        <input type="button" class="button black" value="3"

        onclick='v("3")'><input type="button"

        class="button pink" value="+" onclick='v("+")'></p>
        <p><input type="button" class="button black"

        value="0" onclick='v("0")'><input type="button"

        class="button black" value="." onclick='v(".")'>
        <input type="button" class="button black" value="C"

        onclick='c("")'><input type="button"

        class="button orange" value="=" onclick='e()'></p>
    </div>
    </div>
    <script>
    function c(val)
    {
    document.getElementById("d").value=val;
    }
    function v(val)
    {
    document.getElementById("d").value+=val;
    }
    function e()
    {
    try
    {
      c(eval(document.getElementById("d").value))
    }
    catch(e)
    {
      c('Error')
    }
    }
    </script>
    </html>
    Your Calculator is ready now.
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