?? validphone.html
字號:
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML>
<HEAD>
<TITLE> New Document </TITLE>
<script language="javaScript">
function validphone(theField)
{
var varstring=theField.value;
var varLength=varstring.length;
var flag=true;
if(varLength!=11)
{
flag=false;
}
if(varLength==11)
{
testphone = new Array(11);
testphone = varstring;
for(var i=0;i<varLength;i++)
{
if(testphone[i]>"9"||testphone[i]<"0")
{
flag=false;
}
}
}
if(flag==false)
{
alert("it's wrong!");
}
if(flag==true)
{
alert("that's right!")
}
}
</script>
</HEAD>
<BODY>
<form name="thisForm">
phone:
<input type="text" name="phone" size=11 onBlur="validphone(this.form.phone)">
</form>
</BODY>
</HTML>
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