Trigger onSubmit from submit function

Is it possible to trigger onSubmit event of the form by calling it with

function submitEdit(){
    document.getElementById("edit").submit();
};

THIS WAY IS NOT WORKING

Form:

echo "<form id='edit' onsubmit='validate(flag, typeFlag)' method='post' style='width: 100%;height:86%;'>";`

onSubmit event:

window.flag=false;
var typeFlag;

    function validate(flag, typeFlag) { 
        if   ( (flag==true) && (typeFlag==true) ){
            document.getElementById("edit").setAttribute('target', '_self');
            document.getElementById("edit").action ="date.php";
        } else if ( (flag==true) && (typeFlag==false) ){
            document.getElementById("edit").setAttribute('target', '_blank');
            document.getElementById("edit").action ="date_PDF.php"; 
        } else
            alert("Select an aircraft");
    } 

Am I doing it right? I need to submit this form by clicking on a radio button.

echo '<td class="c3" style="color: #f79393">
                                <div class="radio">
                                    <label><input type="radio" name="name_check" onclick="typeFlag=true; submitEdit();" class="c3" value="in" id="c3" '; if($flag) echo'checked'; echo '>in</label>
                                </div>
                              </td>';

Thank You!

2022 UPDATE

This post is old, but I might as well leave a new working solution. It appears that requestSubmit() does exactly what OP needed. MDN documentation

The updated function:

function submitEdit(){
    document.getElementById("edit").requestSubmit();
};