<html>
<head>
<SCRIPT LANGUAGE="JavaScript">
function isNumber(inputStr) {
var pos = inputStr.indexOf(".");
if(pos != -1) {
var parts = inputStr.split(".");
inputStr = parts[0]+parts[1];
}
for (var i = 0; i < inputStr.length; i++) {
var oneChar = inputStr.substring(i, i + 1)
if (oneChar < "0" || oneChar > "9") {
alert("Please enter valid numeric or decimal values only.")
return false
}
}
return true
}
function checkIt(str) {
inputStr = str
if (!isNumber(inputStr)) {
form.numeric.focus()
form.numeric.select()
}
}
</SCRIPT>
</head>
<body>
<FORM>
Enter any positive integer: <INPUT TYPE="text" NAME="numeric" onChange="checkIt(this.form.numeric.value)"><P>
</FORM>
</body>
</html>
<?php
?>
<head>
<SCRIPT LANGUAGE="JavaScript">
function isNumber(inputStr) {
var pos = inputStr.indexOf(".");
if(pos != -1) {
var parts = inputStr.split(".");
inputStr = parts[0]+parts[1];
}
for (var i = 0; i < inputStr.length; i++) {
var oneChar = inputStr.substring(i, i + 1)
if (oneChar < "0" || oneChar > "9") {
alert("Please enter valid numeric or decimal values only.")
return false
}
}
return true
}
function checkIt(str) {
inputStr = str
if (!isNumber(inputStr)) {
form.numeric.focus()
form.numeric.select()
}
}
</SCRIPT>
</head>
<body>
<FORM>
Enter any positive integer: <INPUT TYPE="text" NAME="numeric" onChange="checkIt(this.form.numeric.value)"><P>
</FORM>
</body>
</html>
<?php
?>
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