Salary and Numeric form validation: Javascript

[BionicJacks]

I am wanting to create a form to validate a salary number entered into the text box, so it contains a valid, non-negative currency. How would I go about this? Please help me.

 

[twist]

if(!isNaN(yourValue) && yourValue >= 0) {
return true;
} else {
return false;
}

would return true is yourValue was a number greater then 0.

 

[BionicJacks]

Could you explain this a little more to me, please. I don't know if I explain myself correctly, and I am somewhat confused. This text box is blank and the user will enter a salary number, when the user presses the 'apply changes' button, this form will then be validated. If nothing entered into the text box the user is prompted to enter something in with numerical value. Sorry, this stuff confuses me.

 

[twist]

ok that i can do.

in the head of your page put this...

<script>
function checkSalary(obj) {
if(!isNaN(obj.salary.value) && obj.salary.value >= 0 && obj.salary.value.length > 0) {
return true;
} else {
alert(&quot;you must enter a valid salary&quot
return false;
}
}
</script>


and your form tag should have this: onSubmit=&quot;return checkSalary(this)&quot;

and your text box the user puts the salary in should be called &quot;salary&quot;

 

[BionicJacks]

Thank you for your help, twist!
s-)