Allow Numbers Only on Textbox

format_num=function(input){
var num = input.value.replace(/\,/g,”);
if(!isNaN(num)){
if(num.indexOf(’.') > -1){
num = num.split(’.');
num[0] = num[0].toString().split(”).reverse().join(”).replace(/(?=\d*\.?)(\d{3})/g,’$1,’).split(”).reverse().join(”).replace(/^[\,]/,”);
if(num[1].length > 2){
alert(’Maksimum 2 Desimal !!!’);
num[1] = num[1].substring(0,num[1].length-1);
}  input.value = num[0]+’.'+num[1];
} else{ input.value = num.toString().split(”).reverse().join(”).replace(/(?=\d*\.?)(\d{3})/g,’$1,’).split(”).reverse().join(”).replace(/^[\,]/,”) };
}
else{ alert(’Input Harus Numerik !!!’);
input.value = input.value.substring(0,input.value.length-1);
}
};

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