87,910
社区成员
发帖
与我相关
我的任务
分享
<html>
<head>
<title>j计算器</title>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<style>
*{margin:0px;padding:0px}
#back{background-color:yellow;font-size: 20px;width:800px;height: 500px;margin:0px auto;}
.cal{text-align: center;}
.cal button{width:100px;height:100px;}
</style>
<script type="text/javascript" language="javascript">
function c1(){
var x=document.calculate.num1.value;
var y=document.calculate.num2.value;
var result=parseFloat(x)+parseFloat(y);
document.calculate.finalnum.value=result;
}
function c2(){
var x=document.calculate.num1.value;
var y=document.calculate.num2.value;
var result=parseFloat(x)-parseFloat(y);
document.calculate.finalnum.value=result;
}
function c3(){
var x=document.calculate.num1.value;
var y=document.calculate.num2.value;
var result=parseFloat(x)*parseFloat(y);
document.calculate.finalnum.value=result;
}
</script>
</head>
<body>
<div id="back">
<form name="calculate" class="cal">
第1个数:<input type="text" name="num1" value="0" id="only"><br>
第2个数:<input type="text" name="num2" ><br>
结果为:<input type="text" name="finalnum"><br>
<input type="button" name='add' value='+' onClick="c1()">
<input type="button" name='minus' value='-' onClick="c2()">
<input type="button" name='cheng' value='*' onClick="c3()">
<input type="button" name='jj' value='++'>
<input type="button" name='jian' value='--'>
<input type="button" name='division' value='/'>
<input type="button" name='bai' value='%'>
</form>
</div>
</body>
</html>