问Javascript/Jquery :在表单提交完成之前，我们如何阻止其他代码的执行

EN

function deleteDocument(form) {
    if (confirm("Do you really want to delete the document?")) 
       form.submit();
       window.dialogArguments.close();
   }

<form action="deleteDocument.php" onsubmit="deleteDocument(this);return false;">

</form>

document.myForm.submit();
setTimeout(
    function() {
      window.dialogArguments.close();    },
 500);

   <form onsubmit="do_something()">

     function do_something(){
      // Do your stuff here
     }

    <form onsubmit="return do_something()">

     function do_something(){
    // Do your stuff here
    return true; // submit the form

    return false; // don't submit the form
   }