禁止输入非金额数目字 _Web前端

禁止输入非金额数字

<html>?
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<head>?
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<title>禁止输入非金额数字</title>?
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<script type="text/javascript">?
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function CheckInputInt(oInput) {
?? var obj = oInput.value;
?? var length = obj.length;
?? var objStart = obj.substr(0,1);
?? var objSub = obj.substr(1,1);
?? var objVal = obj.substr(1,length);
?? if ('' != objStart.replace(/\d/g,''))??
?? {
????? if(objStart != '-'){
??????? objStart = objStart.replace(/\D/g,'');
????? }else{
?????????? if(objSub == '0'){
???????????? objVal = '';
?????????? }
????? }??
?? }
?? if ('' != objVal.replace(/\d/g,'')){
???????????
????????? objVal = objVal.replace(/\D/g,'');??
??? }else{
?????? if(objStart == 0)
????????????? objVal = '';
??? }???
?? oInput.value = objStart+objVal;
?}?
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</script>?
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</head>?
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<body>?
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禁止输入非金额数字<input? type="text" name="num" onkeyup="CheckInputInt(this);" onblur="CheckInputInt(this);" onafterpaste="CheckInputInt(this);" />?
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</body>?
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</html>