JQuery - Unfamiliar notation

I am modifying a javascript file in which they have used the following code. Does anyone know what this does / where it开发者_StackOverflow社区 is documented / etc. It appears it is creating an anchor node and giving it the inner html of "Back", but I'm not sure how it works or what it's capabilities are, as I need to add various attributes to the link:

$("<a id=>").html("Back");

Thanks!

jQuery is just being forgiving. Normally, the code would look like this, instead:

$('<a/>').html("Back");

Which means, create an a element and set its inner HTML to "Back". You can chain some attribute assignments directly after:

$('<a/>')
    .html('Back');
    .attr('id', 'your-id');

This code is indeed creating an anchor element:

<a id="">Back</a>

You can add attributes using the "attr" function, like so:

$("<a id=>").html("Back").attr('href', myUrl);

Alternatively, you can add the attributes directly in the markup:

$("<a id='myId' href='url'>").html("Back");

It is creating an anchor element, but it hasn't appended it to anything, what you would normally do, is either:

$("body").append($("<a>").html("Back").attr("target", "_blank"));

(as an example), or even:

$("<a>").html("Back").attr("target", "_blank").appendTo($("body"));

Because it is a jQuery object, you can continue chaining methods on it to build it up how you want to.

I think it's just some bothched HTML being passed to the factory. Should result in a jQuery collection holding one anchor element which is not yet in the DOM and which has an empty id attr and contains the text "Back":

<a id="">Back</a>