<script language="JavaScript">
<!--
function myGo(theForm)
{
var iCapitalNum = theForm.CapitalNum.value;
var iCount = 0;
var jCount = 0;
var strContractCode = theForm.ContractCode.value; if(iCapitalNum.length == 0)
{
alert("请填写金额!");
return false;
}
for(var i=0;i<iCapitalNum.length;i++)
{
if(iCapitalNum.charAt(i) == '.')
iCount++;
if((iCapitalNum.charAt(i) < '0' || iCapitalNum.charAt(i) > '9') && iCapitalNum.charAt(i) != '.')
{
alert("金额填写不正确!");
return false;
}
}
if(iCapitalNum.charAt(0) == '.' || iCapitalNum.charAt(iCapital.length-1) == '.' || iCount > 1)
{
alert("金额填写不正确!");
return false;
} return true;
}
<!--
function myGo(theForm)
{
var iCapitalNum = theForm.CapitalNum.value;
var iCount = 0;
var jCount = 0;
var strContractCode = theForm.ContractCode.value; if(iCapitalNum.length == 0)
{
alert("请填写金额!");
return false;
}
for(var i=0;i<iCapitalNum.length;i++)
{
if(iCapitalNum.charAt(i) == '.')
iCount++;
if((iCapitalNum.charAt(i) < '0' || iCapitalNum.charAt(i) > '9') && iCapitalNum.charAt(i) != '.')
{
alert("金额填写不正确!");
return false;
}
}
if(iCapitalNum.charAt(0) == '.' || iCapitalNum.charAt(iCapital.length-1) == '.' || iCount > 1)
{
alert("金额填写不正确!");
return false;
} return true;
}
function checkmoney(){
if(!isReal(document.dataform.money.value)){
alert("输入错误!");
return false;
document.dataform.money.focus();
}
}
//测试是否为实数
function isReal(inputVal){ var obj;
var inputStr;
obj=0;
inputStr=inputVal.toString(); for (var i=0;i<inputStr.length;i++)
{
var oneChar=inputStr.charAt(i);
if (i!=0 && oneChar=="." && i!=inputStr.length-1)
{
++obj;
continue;
}
if (i!=0 && i!=inputStr.length-2 && (oneChar=="E" || oneChar=="e"))
{
twoChar=inputStr.charAt(i+1)
if(twoChar=="-"||twoChar=="+")
{
i++;
continue;
}else{
return false;
}
}
if (oneChar!=".")
{
if (oneChar<"0" || oneChar>"9")
{
return false;
}
}
} if (obj!=1)
{
return false;
} return true;}//测试是否为负实数.
function isPosReal(inputVal){ var obj;
var inputStr;
obj=0;
inputStr=inputVal.toString();
for (var i=0;i<inputStr.length;i++)
{
var oneChar=inputStr.charAt(i);
if (i==0 && oneChar=="-") //ÅжÏÊÇ·ñΪ¸º
{
continue;
}
if (i!=0 && oneChar=="." && i!=inputStr.length-1)
{
++obj;
continue;
}
if (i!=0 && i!=inputStr.length-2 && (oneChar=="E" || oneChar=="e"))
{
twoChar=inputStr.charAt(i+1)
if(twoChar=="-"||twoChar=="+")
{
i++;
continue;
}else{
return false;
}
}
if (oneChar!=".")
{
if (oneChar<"0" || oneChar>"9")
{
return false;
}
}
} if (obj!=1)
{
return false;
} return true;}<input type="text" name="money" >
function f_check(obj){
if(obj.value.match(/\d+.\d{2}/)){
return true;
}
alert("货币格式不正确,请重新输入");
obj.value="";
return false;}
</script><input type=text name=text1 value="" onblur="return f_check(this);">
<input type="text" name="jiage" size="47" onkeypress="if((event.keyCode<45 || event.keyCode>57) && event.keyCode!=46) event.returnValue=false;">
我稍微该了下,现铁出:
<input type=text name= caolig value ="" onblur="if (!(/^[\d]+\.?\d*$/.test(this.value)) ){alert('您的输入有误'); this.value='';this.focus();}">