问Chrome JavaScript调试器断点不做任何事情？

EN

//function to check name and comment field 
var test = "this is a test";
var test2 = "this is another test";

function validateLogin(){
    //if(userEmail.attr("value") && userPass.attr("value"))
        return true;
    //else
        //return false;
}

//onclick on different buttons, do different things.
function ajaxRequest(){

}
$(document).ready(function(){
  //When form submitted
    $("#frmVerification").submit(function(){
        var username = $("#username");
        var token = $("#token");
        var action = $("#action");
        var requester = $("#requester");
        if(validateLogin()){
            $.ajax({
            type: "post",
            url: "verification.php",
            data: "username="+username.html()+"&token="+token.val()+"&action="+action.val()+"&requester="+requester.val(),
            success: function(data) {
                try{
                    var jsonObj = $.parseJSON(data); //convert data into json object, throws exception if data is not json compatible
                    if(jsonObj.length > 0){//if there is any error output all data
                        var htmUl = $('<ul></ul>');
                        $.each(jsonObj, function(){
                            htmUl.append('<li>' + this + '</li>');
                        });
                        $("#errOut").html(htmUl);
                    }else{
                        alert("Your account is now activated, thank you. If you have already logged in, press OK to go to the home page. If not, you must log in first.");
                        window.location.replace("home.php");
                    }
                }
                catch(e){//if error output error to errOut]
                    $("#errOut").html("PHP module returned non JSON object: <p>"+data+"</p>");
                }
            }
        });
    }
    else alert("Please fill UserName & Password!");
        return false;
    });
});