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Home Web Front-end JS Tutorial jQuery implements simple online calculator method

jQuery implements simple online calculator method

May 17, 2018 pm 04:02 PM
jquery online calculator

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://ipnx.cn/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://ipnx.cn/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>jQuery計算器</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:"微軟雅黑";
 }
.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:"微軟雅黑";
 }
.input{
 border: 1px solid #6666FF;
}</style>
<script src="jquery-1.7.2.min.js" type="text/JavaScript"></script>
<script language="javascript"><!--
$(document).ready(function() {//傳說中的ready
$("form p input:text").addClass("input");//找到form里面p包含的input標(biāo)簽類型為text的元素 jQuery強(qiáng)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簡單計算器</span></p>
<p>第一個數(shù):<input type="text" id="num1" ></p>
<p>第二個數(shù):<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>結(jié)果:<input type="text" id="reset" /></p>
</p>
</form>
</body>
</html>

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