限制文本框输入
<script src="../Scripts/jquery-1.4.1.min.js" type="text/javascript"></script> <script type="text/javascript"> $(function () { $("#TextBox1").keypress(function (e) { alert(event.keyCode); if (((event.keyCode < 48 || event.keyCode > 57) && event.keyCode != 46) || //只能输入字母和“.” (/\.\d$/.test($("#TextBox1").val())) || //只能输入一位小数 (event.keyCode == 46 && ($("#TextBox1").val().length == 0 || $("#TextBox1").val().indexOf(".") != -1)) //当输入“.”是不能是第一位而且在输入框中不能含有“.” ) { return false; } }) }) </script>
<script> function regInput(obj, reg, inputStr)
{
var docSel = document.selection.createRange()
if (docSel.parentElement().tagName != "INPUT") return false
oSel = docSel.duplicate()
oSel.text = ""
var srcRange = obj.createTextRange()
oSel.setEndPoint("StartToStart", srcRange)
var str = oSel.text + inputStr + srcRange.text.substr(oSel.text.length)
return reg.test(str)
}
</script>
小写英文:<xmp style= "display:inline"> </xmp>
<input onkeypress = "return regInput(this, /^[a-z]*$/, String.fromCharCode(event.keyCode))"
onpaste = "return regInput(this, /^[a-z]*$/, window.clipboardData.getData('Text'))"
ondrop = "return regInput(this, /^[a-z]*$/, event.dataTransfer.getData('Text'))"
style="ime-mode:Disabled"
><br>
大写英文:<xmp style= "display:inline"> </xmp>
<input onkeypress = "return regInput(this, /^[A-Z]*$/, String.fromCharCode(event.keyCode))"
onpaste = "return regInput(this, /^[A-Z]*$/, window.clipboardData.getData('Text'))"
ondrop = "return regInput(this, /^[A-Z]*$/, event.dataTransfer.getData('Text'))"
style="ime-mode:Disabled">
<br>
任意数字:<xmp style="display:inline"> </xmp>
<input onkeypress = "return regInput(this, /^[0-9]*$/, String.fromCharCode(event.keyCode))"
onpaste = "return regInput(this, /^[0-9]*$/, window.clipboardData.getData('Text'))"
ondrop = "return regInput(this, /^[0-9]*$/, event.dataTransfer.getData('Text'))"
style="ime-mode:Disabled"
><br>
限2位小数:<xmp style="display:inline"> </xmp>
<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}$/, event.dataTransfer.getData('Text'))"
style="ime-mode:Disabled"
> 如: 123.12<br>
日 期:<xmp style="display:inline"> </xmp>
<input onkeypress = "return regInput(this, /^\d{1,4}([-\/](\d{1,2}([-\/](\d{1,2})?)?)?)?$/, String.fromCharCode(event.keyCode))"
onpaste = "return regInput(this, /^\d{1,4}([-\/](\d{1,2}([-\/](\d{1,2})?)?)?)?$/, window.clipboardData.getData('Text'))"
ondrop = "return regInput(this, /^\d{1,4}([-\/](\d{1,2}([-\/](\d{1,2})?)?)?)?$/, event.dataTransfer.getData('Text'))"
style="ime-mode:Disabled"
> 如: 2002-9-29<br>
任意中文:<xmp style="display:inline"> </xmp>
<input onkeypress = "return regInput(this, /^$/, String.fromCharCode(event.keyCode))"
onpaste = "return regInput(this, /^[\u4E00-\u9FA5]*$/, window.clipboardData.getData('Text'))"
ondrop = "return regInput(this, /^[\u4E00-\u9FA5]*$/, event.dataTransfer.getData('Text'))"
><br>
部分英文:<xmp style="display:inline"> </xmp>
<input onkeypress = "return regInput(this, /^[a-e]*$/, String.fromCharCode(event.keyCode))"
onpaste = "return regInput(this, /^[a-e]*$/, window.clipboardData.getData('Text'))"
ondrop = "return regInput(this, /^[a-e]*$/, event.dataTransfer.getData('Text'))"
style="ime-mode:Disabled"
> 范围: a,b,c,d,e<br>
部分中文:<xmp style="display:inline"> </xmp>
<script language=javascript>
function checkChinese(oldLength, obj)
{
var oTR = window.document.selection.createRange()
var reg = /[^一二三四五六七八九十]/g
oTR.moveStart("character", -1*(obj.value.length-oldLength))
oTR.text = oTR.text.replace(reg, "")
}
</script>
<input onkeypress="return false" onkeydown="setTimeout('checkChinese('+this.value.length+','+this.uniqueID+')', 1)"
onpaste = "return regInput(this, /^[一二三四五六七八九十]*$/, window.clipboardData.getData('Text'))"
ondrop = "return regInput(this, /^[一二三四五六七八九十]*$/, event.dataTransfer.getData('Text'))"
> 范围: 一二三四五六七八九十<br>