How combine 2 functions on submit?

as you can see, i have to functions first to check if all forms are not empty and the second function is to verify the captcher, when i combine them together both work at the same time, i want to first to verify the first function, when that function returns true then the other function starts,

here is the code that i used on form

<form  action="reg.php" method="post" 开发者_如何转开发enctype="application/x-www-form-urlencoded" onsubmit=" Checking(this); return jcap();" >

As you can see both function execute at the same time

so i tried this

<form  action="reg.php" method="post" enctype="application/x-www-form-urlencoded" onsubmit=" if(Checking(this) == true ){ return jcap();}" >

is bypass both

i also tried this

<form  action="reg.php" method="post" enctype="application/x-www-form-urlencoded" onsubmit=" return(Checking(this) && jcap(this));" >

and it bypassed jcap function

---

It look like that Checking() doesn't have a valid return value. The script might have errored and block the processing. Update the function accordingly. E.g.

function Checking(form) {
    if (form is valid) {
        return true;
    } else {
        return false;
    }
}

This way the third approach should work.

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That said (and unrelated to the actual problem), I'd try to follow the JavaScript coding conventions (functions start with lowercase) and also give the functions a bit more sensible name, e.g. checkCaptcha() and checkForm().

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Combine both of them in a function:

function checkMyForm() {
  if(check_fields() == true) {
    if(check_captha() == true) {
        return true;
    }
  }
  return false;
}

---

No your onsubmit syntax is wrong.

Try this

function checkForm() {
    if(Checking() && jcap())
        return true;
    return false;
}

and your form:

<form action="reg.php" method="post" enctype="application/x-www-form-urlencoded" onsubmit="return checkForm();">