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code to allow negative numbers(no special charcaters,no decimal,no letters)

 
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Hi
Can anybody provide me the code to accept only negative numerics which doesnot allow special characters, decimals and letters?


Thanks
Ganesh Kumar CH
 
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Where is your code? What problems are you having with it? CodeRanch is NotACodeMill.
 
Ganeshkumar cheekati
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function allow_numericandminus_Tracking(obj){
if (!/^\d+(\d*)?$/.test(obj.value)){
obj.value= theVal = obj.value.replace(/[^0-9.]/g,''); //alert(theVal);
if(theVal>""){
obj.value=parseFloat("0"+theVal);
obj.focus()
}
}
}
above code is not allowing hyphen so please guide how to change the regular expression?
 
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put it together



Eric
 
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