Magento - 验证器和validator.validate（）之间的区别

Question

In the login.phtml, what is the difference between validator and validate - Could someone explain what is the meaning of each of the lines below

function onepageLogin(button)
        {
            if(loginForm.validator && loginForm.validator.validate()){
                button.disabled = true;
                loginForm.submit();
            }
        }

Thanks.

Answer 1

loginForm.validator只是检查对象是否存在（如果存在则继续）， loginForm.validator.validate()调用对象的函数validate（）（如果函数也返回true，那么if中的命令） -clause将被执行）。