The following code should suffice for you. Set the ID properties on 2 objects:
- Submit button to ID "pSubmit";
- Input textbox to ID "pValue".
Then simply call TalkPHP_Init(); from the body onload.
Code:
function TalkPHP_Init()
{
var pSubmit = document.getElementById('pSubmit');
pSubmit.onclick = function() { return TalkPHP_Validate(); }
}
function TalkPHP_Validate()
{
var iNumber = +document.getElementById('pValue').value;
if (!iNumber || isNaN(iNumber))
{
alert('You have not entered a number.');
return false;
}
if (iNumber < 1 || iNumber > 100)
{
alert('Your number must be between 1 and 100.');
return false;
}
return true;
}