【#文档大全网# 导语】以下是®文档大全网的小编为您整理的《html_网页计算器_函数编程源代码_Java函数》,欢迎阅读!
主函数: <html> <head>
<title>加减乘除title> <script type="text/javascript"> //java计算函数 function fun() {
var fa = parseInt(document.getElementById('fa').value); var fb = parseInt(document.getElementById('fb').value);
var t = parseInt(document.getElementById('DropDownList1').value); var fc = document.getElementById('fc'); if(isNaN(fa) || isNaN(fb)){ alert("输入错误,请重新输入"); return; }
switch(t){ case 1:
fc.value = fa + fb; break; case 2:
fc.value = fa - fb; break; case 3:
fc.value = fa * fb; break; case 4:
fc.value = fa / fb; break; } } script> head> <body>
<form id="form1" runat="server">
<input type="text" id="fa" value=""/> <%-- 选项菜单选择--%>
<asp:DropDownList ID="DropDownList1" runat="server"> <asp:ListItem Value="1">+asp:ListItem> <asp:ListItem Value="2">-asp:ListItem> <asp:ListItem Value="3">*asp:ListItem> <asp:ListItem Value="4">/asp:ListItem> asp:DropDownList>
<input type="text" id="fb" value=""/>
<input id="Button1" type="button" value="=" onclick="fun()" /> <input type="text" id="fc" value=""/> form> body> html>
只要将此函数运行即可出来一个简单的计算器 实现加减乘除功能
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