StackOverflow2013

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PO
primarykey
Id
2538281
data
AcceptedAnswerId
0
AnswerCount
0
ClosedDate
CommentCount
0
CommunityOwnedDate
CreationDate
2010-03-29T13:43:51.897
FavoriteCount
0
LastActivityDate
2010-03-29T13:49:44.570
LastEditDate
2010-03-29T13:49:44.570
LastEditorUserId
94197
OwnerUserId
94197
ParentId
2538215
PostTypeId
2
Score
4
ViewCount
0
LastEditorDisplayName
text
Body
<p>In short, all AJAX requests (and cross-window scripting) are subject to the <a href="http://en.wikipedia.org/wiki/Same_origin_policy" rel="nofollow noreferrer">Same Origin Policy</a>. JSONP (<a href="http://en.wikipedia.org/wiki/JSON#JSONP" rel="nofollow noreferrer">JSON with Padding</a>) isn't subject to the Same Origin Policy because it involves adding a script from an external domain to the DOM, the script itself contains a call to a known function that already exists on the client, with the JSON as the function call's argument. </p> <p>JSONP can't return HTML or XML directly, but it could pass an object that contains a string of HTML or XML data, which in turn could be added to the DOM or parsed by the client.</p> <p>For instance, a JSONP might return:</p> <pre><code>jsonp_callback({"Errors":"none","Data":"<div id='externalWidget'>Hello!</div>"}); </code></pre> <p>When this script is added to the page, the function <code>jsonp_callback</code> will be executed with the JSON object as its argument. That function would then add the HTML code to the page. </p> <p>There are other ways of achieving what you want. For instance, if the client doesn't need to manipulate the data in any way, you could provide a widget via a HTML document that would be iframed by your client's page:</p> <pre><code><iframe id="widget" src="http://mysite.com/widget/v1/" /> </code></pre> <p>If they did need to manipulate the data, they would blocked by the Same Origin Policy as outlined above.</p>
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1. POCross Domain Scripting Issues & JSONP
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1. USAndy E
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1. USAndy E
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1. POCross Domain Scripting Issues & JSONP
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