JS求和实例

2015-11-19 11:05:06

存在问题：
如何实现JS的加和

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解决方案：
代码如下

<script type="text/javascript">       
      function sumH() {
            var sunHezhi = 0;
            var SXZ = document.getElementById("TextBox1").value;  //textbox取值
            for (var i = 1; i < SXZ; i++) {
                sunHezhi += 1.0 / (i * i);
                sunHezhi = parseFloat(sunHezhi);  //数字转换
            }
            alert(sunHezhi.toFixed(2));
         }
    </script>
    <asp:Button ID="Button1" runat="server" OnClientClick="sumH()" Text="Button" />
    <asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>