Javascript简单的表单验证不起作用

Question

I have been trying to figure this simple code out. I have it down to where the IF Firstname is empty or == 1, it will ALERT, but the final IF statement is always ringing true and doesn't alert false or true. Any ideas?

function validateForm()
{
    var firstname=document.getElementById('firstname').value.trim();


var count=0;
if (firstname.length==0)
 { alert("EMPTY");
  document.getElementById("err_firstname").innerHTML="<br><span class='errorbar'>*This is a required field</span>";
  } else  {
   count++; 
   alert("COUNTED");
   document.getElementById("err_firstname").innerHTML="";
  }

  if (count==1)
      {
   return true; 
  alert("true");
   } else {
   document.getElementById("err_allerrors").innerHTML="<br><span class='errorbar'>*There is required information missing. Please enter all required data.</span>";
      return false;
             alert("false");       

     }
    //Verified         
}

Answer 1

在alert()之前返回是问题所在