return false; onclick submit button not working

Question

Ive been trying to get my submit button to return false if there are any error in my code, but it keeps bringing me to a broken page, i have tried in the console of firefox and there are no errors. Thanks the return false is at the bottom Code:

function searchForm(){
//checks all the boxes to see if there are any errors
confirmFName();

confirmLName();

confirmEmail();

confirmAddress1();

confirmAddress2();

confirmCity();

confirmCode();

confirmUName();

confirmPass();

//check to make sure a region is selected
if(nhlForm.regBox == "Choose a Country first", "Choose your Country First"){
    //shows error message
    showMessage(nhlForm.regBox, "error", "*Choose a region");
    showMessage(nhlForm.counBox, "error", "*Choose a country");
}

//checks if checkbox is checked, if not messgae will appear and form will not send
if(nhlForm.agebox.checked == true){
    showMessage(nhlForm.agebox, "bingo", "");
}else{

    //shows error message
    showMessage(nhlForm.agebox, "error", "You must be at least 14 to have an account"); 
}

if(nhlForm.checkbox.checked == true){

    showMessage(nhlForm.checkbox, "bingo", "");
}else{

    //shows error message
    showMessage(nhlForm.checkbox, "error", "You must accept the terms of use to continue"); 
}

//if there are no errors, form will send
if(document.querySelectorAll(".error").length > 0){

//dont submit the form till errors are fixed
return false;
    }
}

Answer 1

Try this code

function searchForm(){
//checks all the boxes to see if there are any errors
confirmFName();

confirmLName();

confirmEmail();

confirmAddress1();

confirmAddress2();

confirmCity();

confirmCode();

confirmUName();

confirmPass();
var flag=true;

//check to make sure a region is selected
if(nhlForm.regBox == "Choose a Country first", "Choose your Country First"){
    //shows error message
    showMessage(nhlForm.regBox, "error", "*Choose a region");
    showMessage(nhlForm.counBox, "error", "*Choose a country");
flag=false;
}

//checks if checkbox is checked, if not messgae will appear and form will not send
if(nhlForm.agebox.checked == true){
    showMessage(nhlForm.agebox, "bingo", "");
}else{

    //shows error message
    showMessage(nhlForm.agebox, "error", "You must be at least 14 to have an account"); 
flag=false;
}

if(nhlForm.checkbox.checked == true){

    showMessage(nhlForm.checkbox, "bingo", "");
}else{

    //shows error message
    showMessage(nhlForm.checkbox, "error", "You must accept the terms of use to continue"); 
flag=false;
}
 return flag;
}

and onSubmit="return searchForm()" in form tag