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jQuery implements simple online calculator method

小云云Original: 2018-05-17 16:02:413069browse

This article mainly introduces the simple online calculator function implemented by jQuery, and analyzes the related operating skills of jQuery implementing simple four arithmetic operations in the form of a complete example. Friends who need it can refer to it. I hope it can help everyone.

Let’s take a look at the running effect diagram first:

The complete code is as follows:

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.php.cn/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.php.cn/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>jQuery计算器</title>
<style type="text/css"><!--
 .p{
 border:green 1px;
 border-style:solid;
 width:300px;
 text-align:center;
 }
 span{
 background-color:#CCCCCC;
 font-size:32px;
 font-family:"微软雅黑";
 }
.input{
 border: 1px solid #6666FF;
}
--></style><style type="text/css"> .p{
 border:green 1px;
 border-style:solid;
 width:300px;
 text-align:center;
 }
 span{
 background-color:#CCCCCC;
 font-size:32px;
 font-family:"微软雅黑";
 }
.input{
 border: 1px solid #6666FF;
}</style>
<script src="jquery-1.7.2.min.js" type="text/JavaScript"></script>
<script language="javascript"><!--
$(document).ready(function() {//传说中的ready
$("form p input:text").addClass("input");//找到form里面p包含的input标签类型为text的元素 jQuery强悍
var num1,num2;
$("#jia").click(function() {
num1=parseFloat($("#num1").val());
num2=parseFloat($("#num2").val());
$("#reset").val(num1+num2);
});
$("#jian").click(function() {
num1=parseFloat($("#num1").val());
num2=parseFloat($("#num2").val());
$("#reset").val(num1-num2);
});
$("#cheng").click(function() {
num1=parseFloat($("#num1").val());
num2=parseFloat($("#num2").val());
$("#reset").val(num1*num2);
});
$("#chu").click(function() {
num1=parseFloat($("#num1").val());
num2=parseFloat($("#num2").val());
$("#reset").val(num1/num2);
});
});
// --></script>
</head>
<body style="text-align:center">
<form>
<p class="p">
<p><span>jQuery简单计算器</span></p>
<p>第一个数:<input type="text" id="num1" ></p>
<p>第二个数:<input type="text" id="num2" ></p>
<p><input type="button" value=" + " id="jia"><input type="button" value=" - " id="jian"><input type="button" value=" * " id="cheng"><input type="button" value=" / " id="chu"></p>
<p>结果:<input type="text" id="reset" /></p>
</p>
</form>
</body>
</html>

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