[JS/jQuery] action, submit

HTML

<form name='formName' id='formId' method='post' action='action.do'>
    <input type='hidden' name='dataName' value='dataVal'/>
    <a href='#' onclick='fnSubmit()'>Submit</a>
</form>

 

JavaScript

function fnSubmit() {
    var form = document.formName;
    form.submit();
}

 

jQuery

function fnSubmit() {
    $('#formId').attr('action', 'action.do').submit();
}