Can you use an XMLHttpRequest to access an API such as the police API or the World Bank API? If so, how does the site circumvent Same-Origin Policy?
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Beta Decay
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@Alexander Possible, but this isn't about any site, just APIs – Beta Decay Jul 13 '16 at 18:42
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2Same-Origin Policy does not recognize a difference. – Alexander O'Mara Jul 13 '16 at 18:43
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@Alexander So, no, I cannot access these APIs with JavaScript? – Beta Decay Jul 13 '16 at 18:47
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1Exactly, the restrictions are the same, regardless of the URL. – Haroldo_OK Jul 13 '16 at 18:47
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Have you even tried making a request to any of these APIs in JavaScript? `fetch('https://data.police.uk/api/crimes-street-dates')` seems to work without any issues. – fny Jul 13 '16 at 18:52
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@faraz Well, not yet. I was trying to see whether it is worth writing a program to use an API tomorrow – Beta Decay Jul 13 '16 at 19:02
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Your question is entirely moot since there's no CORS issue to begin with... – fny Jul 13 '16 at 19:04