web-dev-projects/calculator.html at master · deep0711/web-dev-projects · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
<html>
    <head>
        <title>CALCULATOR</title>

        <style>

            body
            {
                position: absolute;
                top:50%;
                left:50%;
                transform:translateX(-50%) translateY(-50%);
                background:linear-gradient(to right,red,blue);

            }

            .main
            {

                height:100%;
            }

            .in
            {border:1px solid black;
             height: 50px;
             width: 330px;
             margin:0px;
             padding:8px;
             margin-bottom: 1px;
             }

             .btn
             {
                height:60px;
                width: 80px;
                border-style: none;
                color:white;
                background-color: #1e2838;

             }


        </style>

        <script>
            function add(x)
            {
                document.inp.textview.value=document.inp.textview.value+x;
            }

            function answer()
            {
                var an=document.inp.textview.value;
                document.inp.textview.value=eval(an);
            }

            function back()
            {
             var y=document.inp.textview.value;
             var l=y.length;

             console.log(l);

             document.inp.textview.value=y.substr(0,l-1);
            }

            function clean()
            {
                document.inp.textview.value="";
            }

        </script>

</head>

<body>
    <div class="main"></div>
    <form name="inp">
        <input type="text" name="textview" class="in">
    </form>

    <table>

        <tr>
                    <td><input class="btn" type="button" value="*" onclick="add('*')"></td>
                    <td><input  class="btn" type="button" value="/" onclick="add('/')"></td>
                    <td colspan="2"><input  class="btn" type="button" value="C" onclick="clean()" style="width:164px"></td>

        </tr>


        <tr>
            <td><input class="btn" type="button" value="1" onclick="add(1)"></td>
            <td><input  class="btn" type="button" value="2" onclick="add(2)"></td>
            <td><input  class="btn" type="button" value="3" onclick="add(3)"></td>
            <td><input  class="btn" type="button" value="=" onclick="answer()"></td>
        </tr>

        <tr>
            <td><input  class="btn" type="button" value="4" onclick="add(4)"></td>
            <td><input  class="btn" type="button" value="5" onclick="add(5)"></td>
            <td><input  class="btn" type="button" value="6" onclick="add(6)"></td>
            <td><input  class="btn" type="button" value="-" onclick="add('-')"></td>
        </tr>

        <tr>
                <td><input  class="btn" type="button" value="7" onclick="add(7)"></td>
                <td><input  class="btn" type="button" value="8" onclick="add(8)"></td>
                <td><input  class="btn" type="button" value="9" onclick="add(9)"></td>
                <td rowspan="2"><input  class="btn" type="button" value="+" style="height:120px;" onclick="add('+')"></td>
        </tr>

        <tr>
                <td><input  class="btn" type="button" value="<" onclick="back()"></td>
                <td><input  class="btn" type="button" value="0" onclick="add(0)"></td>
                <td><input  class="btn" type="button" value="."  onclick="add('.')"></td>

        </tr>


    </table>
</body>
 </html>