JS控制文字框只能輸入正整數和兩位小數點以內的小數

來源:互聯網
上載者:User

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default2.aspx.cs" Inherits="Default2" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head id="Head1" runat="server">
    <title>無標題頁</title>

    <script type="text/javascript" language="javascript">
 function regInput(obj, reg, inputStr)
 {
  var docSel = document.selection.createRange()
  if (docSel.parentElement().tagName != "INPUT") return false
  oSel = docSel.duplicate()
  oSel.text = ""
  var srcRange = obj.createTextRange()
  oSel.setEndPoint("StartToStart", srcRange)
  var str = oSel.text + inputStr + srcRange.text.substr(oSel.text.length)
  return reg.test(str)
 }
    </script>

</head>
<body>
    <form id="form1" runat="server">
        測試伺服器控制項:
        <asp:TextBox ID="txt1" runat="server" onkeypress="return regInput(this,/^\d*\.?\d{0,2}$/,String.fromCharCode(event.keyCode))"
            onpaste="return regInput(this,/^\d*\.?\d{0,2}$/,window.clipboardData.getData('Text'))"
            ondrop="return regInput(this,/^\d*\.?\d{0,2}$/,event.dataTransfer.getData('Text'))"
            Style="ime-mode: Disabled"></asp:TextBox><br />
        測試html控制項:
        <input onkeypress="return regInput(this,/^\d*\.?\d{0,2}$/,String.fromCharCode(event.keyCode))"
            onpaste="return regInput(this,/^\d*\.?\d{0,2}$/,window.clipboardData.getData('Text'))"
            ondrop="return regInput(this,/^\d*\.?\d{0,2}$/,event.dataTransfer.getData('Text'))"
            style="ime-mode: Disabled">
    </form>
</body>
</html>

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