javascript判斷字元(所有)

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上載者:User

javascript判斷字元(轉載)2007-07-19 08:52<html>
<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>
<body>
小寫英文:<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-modeisabled"
><br>

大寫英文:<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-modeisabled">
<br>

任一數字:<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-modeisabled"
><br>

限2位小數:<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-modeisabled"
> 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-modeisabled"
> 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-modeisabled"
> 範圍: 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'))"
> 範圍: 一二三四五六七八九十
</body>
</html>
 

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