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POSafely parse/work with HTML from XMLHttpRequest
 

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  1. POSafely parse/work with HTML from XMLHttpRequest
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    <p>I'm writing code (right now it's a Chrome extension, though I may make it cross-browser, or try to get the site owners to include the enhancement) that works with the contents of a particular <code>&lt;div&gt;</code> on a webpage that the user is viewing, and any pages that are part of the same discussion thread. So I find links to the other pages of the thread, and get them with <code>XMLHttpRequest</code>. What I want to do is just be able to use <code>.getElementsByClassName('foo')</code> on the resulting page. </p> <p>I know I can do that by loading the results of the request into a div (i.e. <a href="https://stackoverflow.com/questions/7677340/optimal-way-to-extract-a-url-from-web-page-loaded-via-xmlhttprequest">Optimal way to extract a URL from web page loaded via XMLHTTPRequest?</a>). However, while figuring out the best way to do this, I read that there are security concerns (<a href="https://developer.mozilla.org/En/Using_XMLHttpRequest#Analyzing_and_manipulating_HTML_responseText" rel="nofollow noreferrer">MDN - Safely Parsing Simple HTML to DOM</a>).</p> <p>In this case, I'm not sure that matters much, since the extension would just load a page from the same comment thread that the user was already looking at, but I'd still like to do this the right way. </p> <p>So what's the right way to work with HTML from an <code>XMLHttpRequest</code>? </p> <p>P.S. If the best answer is jQuery, then tell me that, but I've yet to start using jQuery, and would also like to know the fundamentals here. </p> <p>Edit: I don't know why I phrased things the way I did, but let me be clearer that I'm really hoping for a non-JQuery answer. I've been trying to learn the basics of javascript before learning JQuery and I'd prefer not to import a whole framework to call one function when I don't understand what I'm doing. That may seem irrational, but it's what I'm doing for the moment. </p>
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    1. USJustin Blank
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    1. COWorking with a raw XHR object can be painful. jQuery would indeed make it much simpler. See the post, get, and ajax functions http://api.jquery.com/?ns0=1&s=ajax&go=
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      1. USAdam Rackis
    2. COjQuery is the way to go.
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      1. USChris Laplante
 

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