JavaScript & jQuery
JavaScript 숫자 체크
꼬렙
2013. 10. 29. 09:46
<html>
<head>
<script type="text/javascript">
var numberCheck = function() {
var temp = document.getElementById('input').value;
if(isNaN(temp) == true) {
alert("입력된 값 : " + temp + " / 문자");
} else {
alert("입력된 값 : " + temp + " / 숫자");
}
};
</script>
</head>
<body>
<input type="text" id="input" />
<input type="button" value="확인" onClick="numberCheck()" />
</body>
</html>
isNaN("문자") ==> true
isNaN(숫자) ==> false