没有ID和名称的HTML按钮如何找到？

Question

I am working with Htmlunit for auto-fill-out-form. There is a submit butoon with the following code:

<input type="submit" class="button" value="Log in" tabindex="104" title="Enter your            username and password in the boxes provided to login, or click the 'register' button to create    a profile for yourself." accesskey="s" />

unfortunately when I try to detect the element, there is no possibility to detect and recognize it by Tabindex or Title. When I try access key it returns an error mentioning that I am entering a string rather an access key. So what should be done? Thanks for help.

Update: Ok. I solved the problem myself. It's possible to detect the element by access key. But instead of "s", it should be 's'. That solved the problem. Thanks for all answers.

Answer 1

Why not alter your HTML to add an id attribute. That is, consider altering your application so it is easier to test.

Answer 2

you can't do it, without passing an attribute to it, either give it an id or a name. That would help you,

Answer 3

Here "0" means it the first input type element.

var but = document.getElementsByTagName("input")[0]; //index of input type element 
console.log(but.value);