Firefox is having trouble defining the HTML form attribute "name"

Here is some code that I have in my JSP page:

<form name = loginform method = post action="">
<table class=registerTable>
<tr>         
    <td>Username:</td></tr>
    <tr><td>
    <input name=user type=text class=usnm required size=28 maxlength=35 autocomplete="off" onblur="validateUser()" onkeyup="checkUsernameAvailability(this.value)"><br></td></tr>
    <tr><td>
    <span id = uerrmsg class = error></span><br></td></tr>
</table>
</form>

When calling onblur=validateUser(), the following function executes:

function validateUser(){
if(loginform.user.value.length<5){
    document.getElementById("uerrmsg").innerHTML="minimum 5 characters";
    return false;
}else{
    document.getElementById("uerrmsg").innerHTML="";
    return true;
    }
}

Upon checking the Error Console in Firefox, the following error is displayed:

loginform is not defined

If you could provide guidance on this issue, it would be greatly appreciated.

Also, I would like to mention that the above code works perfectly fine in all other browsers.

Answer №1

To retrieve the name attribute of an input, you can utilize input.getAttribute("name"). This method is compatible with most browsers.

On a side note, if you are using getElementById, it is essential to assign a value to the "id" field of the input element.

Answer №2

It is recommended to use document.loginform.

Answer №3

To achieve this, you can simply assign an id to your input: id="user". Then, you can retrieve its value using document.getElementById(), similar to how you access the value of another element, like so:

document.getElementById("user").value.length

It's worth noting that your current code deviates from standard practice. For instance, avoid placing a space between the attribute and the = sign. Additionally, make sure to enclose attribute values in quotes (as seen in the source code of this page).

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