只能输入价格和数字

 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)
 }
 
===只能输入数字
<input type=text name=text1 id=text1 runat=server onkeypress="return regInput(this, /^[0-9]*$/, String.fromCharCode(event.keyCode))" 
onpaste="return regInput(this, /^[0-9]*$/, window.clipboardData.getData('Text'))" 
ondrop="return regInput(this, /^[0-9]*$/, event.dataTransfer.getData('Text'))"> 

== 只能输入价格
<input type=text name=text1 id=text1 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'))"> 

 

 

function IsDigit()
{
  return ((event.keyCode >= 48) && (event.keyCode <= 57));
}

<input type=text name=text1 id=text1 runat=server onkeypress="event.returnValue=IsDigit();">

 

 

以上文本框里再加上style="ime-mode:disabled" （禁用输入法）彻底OK