计算器小练习 

*{
                margin: auto;
                padding: 0px;
            }
            #a1{
                width: 100px;
                height: 50px;
                border: 1px solid red;
            }
            #a2{
                width: 50px;
                height: 50px;
                border: 1px solid red;
            }
            #a3{
                width: 100px;
                height: 50px;
                border: 1px solid red;
            }
            #a4{
                width: 100px;
                height: 50px;
                border: 1px solid red;
            }
            #a5{
                width: 100px;
                height: 50px;
                border: 1px solid red;
            }
            #a6{
                width: 100px;
                height: 20px;
                border: 1px solid red;
            }
            #a7{
                width: 100px;
                height: 40px;
                border: 1px solid red;
            }
            
        </style>
    </head>
    <body>
        <div id="a1">
            <input type="" name="b1" id="b1" value="" />
        </div>
        <div id="a2">
            <input type="" name="b2" id="b2" value="" />
        </div>
        <div id="a3">
            <input type="" name="b3" id="b3" value="" />
        </div>
        <div id="a4">
            <input type="submit" name="b4" id="b4" value="计算" onclick="b8()"/>
        </div>
        <div id="a5">
            <div id="a6">
                计算结果
            </div>
            <div id="a7">
                
            </div>
        </div>



</body>

 

posted @ 2018-04-17 06:59  张禄  阅读(127)  评论(0)    收藏  举报