Firefox Does Not Support Javascript (form Validation) But Ie Fully Support

I developed a user input form in php used (php, html, javascript…). I wrote validate functions in JavaScript. The form is working fine in internet explorer and validate all the f

Solution 1:

You haven't provided any code, so we can only guess. The odds are that you are using a Doctype that fails to trigger standards mode (or no Doctype at all) and that you are using proprietary Microsoft DOM properties instead of standard ones.