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Origin is not allowed by Access-Control-Allow-Origin
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You need to enable CORS on the server (localhost:8080). Check out this site: http://enable-cors.org/
All you need to do is add an HTTP header to the server:
Access-Control-Allow-Origin: http://localhost:3000
Or, for simplicity:
Access-Control-Allow-Origin: *
Thought don't use "*" if your ...
Can I use non existing CSS classes?
... classes that actually occur in the HTML. It's actually quite common for a site to have sitewide CSS used on all pages, even though some of the classes it refers to do not appear on every single page. (For example, the site might have custom styling for external links, a.extlink or whatnot, even if ...
How to automatically reload a page after a given period of inactivity
... No Activity means End User is not on desk or surfing some other site. No Mouse/KB activity on site which I am referring for.
– Umar Adil
Jan 10 '11 at 7:02
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Is it valid to replace http:// with // in a ?
...uld work. I've used that relative URL method myself on heavily trafficked sites and have had zero complaints. Also, we test our sites in Firefox, Safari, IE6, IE7 and Opera. These browsers all understand that URL format.
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What are -moz- and -webkit-? [duplicate]
...hat if a feature is experimental then it shouldn't be in use in production sites; defaulting to disabled discourages that because end-users won't have it enabled but web devs can still experiement with it. And if a feature is ready for production then it shouldn't need a prefix. That's the theory an...
Prevent BODY from scrolling when a modal is opened
...heel while the Modal (from http://twitter.github.com/bootstrap ) on my website is opened.
41 Answers
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SVG drop shadow using css3
..., 0, 0, 1));
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<img class="light-shadow" src="https://cdn.sstatic.net/Sites/stackoverflow/company/img/logos/so/so-logo.svg" />
<img class="dark-shadow" src="https://cdn.sstatic.net/Sites/stackoverflow/company/img/logos/so/so-logo.svg" />
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what is Promotional and Feature graphic in Android Market/Play Store?
...oogle.com/googleplay/android-developer/answer/113469?hl=en
Quote from the site:
The Feature Graphic is used for promotions on Google Play. While this
graphic is not required to save and publish your Store Listing, it is
required in order to be featured on Google Play.
Commentary:
To be c...
How to make input type= file Should accept only pdf and xls
... would allow to upload any file, including a shell. People could hack your site. Do it server site, to be safe.
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ASP.NET MS11-100: how can I change the limit on the maximum number of posted form values?
...d scenario for this error - Shopping cart in one of our client's eCommerce site had a lot of items and we had this error logged when she was accessing the page. In such cases, overriding the max value is the best option.
– Ankur-m
Jul 31 '13 at 5:41
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