【JavaScript】手機號碼驗證
<script type='text/javascript'>
function IsNumeric(sText)
{ //判斷是否為數值
var ValidChars = "0123456789";
參考本Blog:判斷是否為數字--IsNumeric
}
function Left(str, n)
{
參考本Blog:字串擷取--Left
}
function ChkMobile()
{
if (document.form1.p_mobile1.value.length!=0 && document.form1.p_mobile2.value.length!=0)
{
var handy=document.form1.p_mobile1.value.length+document.form1.p_mobile2.value.length;
if (IsNumeric(document.form1.p_mobile1.value)==false)
{
alert('手機號碼只能為數字！');
document.form1.p_mobile1.focus();
return false;
}
if (IsNumeric(document.form1.p_mobile2.value)==false)
{
alert('手機號碼只能為數字！');
document.form1.p_mobile2.focus();
return false;
}
if (handy!=10)
{
alert('手機號碼只能為10碼！');
document.form1.p_mobile2.focus();
return false;
}
if (Left(document.form1.p_mobile1.value,2)!='09')
{
alert('手機號碼只能為09開頭的數字！');
document.form1.p_mobile1.focus();
return false;
}
}
}
</script>
部份HTML碼:
<html>
<body>
<form name="form1" method="post" action="">
手機號碼 :
<input name="p_mobile1" type="text" width="15" maxlength="4">
-
<input name="p_mobile2" type="text" width="20" maxlength="6">
<input name="OK" type="button" onClick="ChkMobile();" value="OK">
</form>
</body>
</html>
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