Is it valid to put table element into list element in HTML5?

Question

So that is the question, can i do thing like this:

<li><table></table></li>

I can't check on W3 as it's disabled at my workplace...

Answer 1

You don't necessarily need to check with W3 for information like this. Mozilla Developer Network is a great resource full of information regarding standards and compatibility. For instance, the page for <li> elements describes them as follows (emphasis mine):

Content categories: None.
Permitted content: Flow content.

And there's even a section describing flow content:

Elements belonging to the flow content category typically contain text or embedded content. They are: <a>, <abbr>, <address>, <article>, <aside>, <audio>, <b>, <bdo>, <blockquote>, <br>, <button>, <canvas>, <cite>, <code>, <command>, <datalist>, <del>, <details>, <dfn>, <div>, <dl>, <em>, <embed>, <fieldset>, <figure>, <footer>, <form>, <h1>, <h2>, <h3>, <h4>, <h5>, <h6>, <header>, <hgroup>, <hr>, <i>, <iframe>, <img>, <input>, <ins>, <kbd>, <keygen>, <label>, <map>, <mark>, <math>, <menu>, <meter>, <nav>, <noscript>, <object>, <ol>, <output>, <p>, <pre>, <progress>, <q>, <ruby>, <samp>, <script>, <section>, <select>, <small>, <span>, <strong>, <sub>, <sup>, <svg>, <table>, <textarea>, <time>, <ul>, <var>, <video>, <wbr> and Text.

So, those pages tell us that a <table> is indeed valid within a <li>. Of course, you can find this information in mirrors of the HTML spec too, I just find MDN a little quicker to navigate.