quick function question

[bind199]

lo i need a quick data validation for a text box so taht it checks to see if number entered in a box is  a number after all and is a whole number(integer) the name of the text box is amount Thanks for help

[Psycho]

function isInt (value) {
    return (!isNaN(value) && (value==Math.round(value));
}

[bind199]

ok this is an addendum to the first post, i want to validate the text box which takes the value and has to be between 1 and 100 would it be a if statement like if (amt > 100 ll amt <1) alert "incorrect format"? the text box is called "amt"

 

[Psycho]

function validateAmount (value) {

  if (isNaN(value) || value!=Math.round(value)) {
    alert('The value must be an integer.');
    return false;

  } else if (value<1 || value >100) {
    alert('The value must be between 1 and 100.');
    return false;

  return true;
}

[bind199]

thanks for all ur help. One last thing i promise. I am still alittle confused on what to put in the "value" space. For example the Text box named IRate would i put

 

function validateAmount (IRate.value)    ? or something similar.

 

thanks for all the help. Regards

[Psycho]

No, you would call tyhe function like this:

 

validateAmount (IRate.value)

 

Assuming "IRate" is an object reference for the field. You would need to create a trigger such as onblur, onchange, onsubmit, etc. And also have proper alerts or functions to handle if the response is negative. You didn't post any code so I can't offer any suggestions on how to best implement this - I jsut created a function that will return true/false based upon the parameters you asked.