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there's no &lt;document&gt;&lt;/document&gt; in the page so we use $(document)<br />
there's no &lt;window&gt;&lt;/window&gt; so we use $(window)<br />
window.document : <a href="https://developer.mozilla.org/en-US/docs/Web/API/Window/document" rel="ugc">https://developer.mozilla.org/en-US/docs/Web/API/Window/document</a><br />
window.window : <a href="https://developer.mozilla.org/en-US/docs/Web/API/Window/window" rel="ugc">https://developer.mozilla.org/en-US/docs/Web/API/Window/window</a><br />
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note : window. is used to access global objects<br />
<br />
check this :<br />
<br />
<a href="https://filedb.experts-exchange.com/incoming/2019/07_w29/1426259/Capture-d-e-cran-2019-07-14-a--08.29.png" target="_blank" title="Capture-d-e-cran-2019-07-14-a--08.29.png (16 KB)"><img alt="Capture-d-e-cran-2019-07-14-a--08.29.png" class="file-block lazyload" style="max-width: 272px;" data-src="https://filedb.experts-exchange.com/incoming/2019/07_w29/1426259/Capture-d-e-cran-2019-07-14-a--08.29.png" /></a>
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there's no <document></document> in the page so we use $(document)
there's no <window></window> so we use $(window)
window.document : https://developer.mozilla.org/en-US/docs/Web/API/Window/document [https://developer.mozilla.org/en-US/docs/Web/API/Window/document]
window.window : https://developer.mozilla.org/en-US/docs/Web/API/Window/window [https://developer.mozilla.org/en-US/docs/Web/API/Window/window]

note : window. is used to access global objects

check this :

Capture-d-e-cran-2019-07-14-a--08.29.pnghttps://filedb.experts-exchange.com/incoming/2019/07_w29/1426259/Capture-d-e-cran-2019-07-14-a--08.29.png

Capture-d-e-cran-2019-07-14-a--08.29.png

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I gather you're telling me that $(document) is correct, which is fine. The question remains &quot;why does ('document') also work with no issues?
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I gather you're telling me that $(document) is correct, which is fine. The question remains "why does ('document') also work with no issues?

Principal

dlearman1

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What is the correct jQuery usage ( document ).ready... or ('document').ready...? &nbsp;I've always used ( document ).ready, but I'm working with a developer module that uses ('document').ready; and it seems to work. Are the forms interchangeable?
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What is the correct jQuery usage ( document ).ready... or ('document').ready...?  I've always used ( document ).ready, but I'm working with a developer module that uses ('document').ready; and it seems to work. Are the forms interchangeable?

What is the correct jQuery usage ( document ).ready... or ('document').ready...?

jQuery (Core) is a cross-browser JavaScript library that provides abstractions for common client-side tasks such as Document Object Model (DOM) traversal, DOM manipulation, event handling, animation and Ajax. jQuery also provides a platform to create plugins that extend jQuery's capabilities beyond those already provided by the library.