Use & instead of &&. && uses short-circuit evaluation and so doesn’t evaluate the right-hand operand if the left-hand operand is falsy. & always evaluates both operands. onsubmit=”return !!(validateName() & validatePhone() & validateAddress() & validateEmail());” EDIT: Sorry, I forgot that & won’t return an actual boolean. Wrap the expression in parentheses and use a double … Read more
You should stop the submit procedure by returning false on the onsubmit callback. <script> function checkRegistration(){ if(!form_valid){ alert(‘Given data is not correct’); return false; } return true; } </script> <form onsubmit=”return checkRegistration()”… Here you have a fully working example. The form will submit only when you write google into input, otherwise it will return an … Read more
Sorry, misunderstood your question. According to Javascript – capturing onsubmit when calling form.submit(): I was recently asked: “Why doesn’t the form.onsubmit event get fired when I submit my form using javascript?” The answer: Current browsers do not adhere to this part of the html specification. The event only fires when it is activated by a … Read more