Go4Expert - Javascript error

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Javascript error

I am using this code in a HTML page but every time the result is erroneous.

function check()
{var a=document.getElementById("txt_user").value.trim;
var b=document.getElementById("txt_pwd").value.trim;
if((a=="")||(b==""))
{alert("Required fields can't be left empty");
return false;
}
else if(a==b)
{alert("Username and password are same");
return false;
}
}
Whatever be the values in textboxes txt_user and txt_pwd the alert comes as "Username and password are same".
Please let me know if there is any bug in the code.
Thanks in advance.

Re: Javascript error

OMG ... It's all about a pair of parentheses () !!
Even I was surprised at first sight, how can that code give some errors ?!

Finally found it, though. Here is the rectified code :

Code: JavaScript

function check()
{
    var a=document.getElementById("txt_user").value.trim();
    var b=document.getElementById("txt_pwd").value.trim();
    if((a=="")||(b==""))
    {
        alert("Required fields can't be left empty");
        return false;
    }
    else if(a==b)
    {
        alert("Username and password are same");
        return false;
    }
}

You missed a pair of parentheses behind the trim function. :)

Re: Javascript error