Cross-domain security restrictions are for the browser end, and there are no cross-domain security restrictions for the server end。
Generally, a. Com web page does not communicate directly with b. Com's server, and the browser's co-source policy limits the interaction of documents or scripts loaded from one source with resources from another source。
If you agree that the port and the host are the same for both pages, both pages have the same source, otherwise they are different。
If cross-domain requests are to be initiated in js, some special treatment is required. Alternatively, you can send the request to your own server, launch the request via a code and return the data to the front end. (i've hardly used a jsonp. I've sent cross-border requests to the highest level of service. I'm not sure
Browser-end has more related articles that can get data directly across domains, such as js-crossing js-crossing js-and-crossing of HTML - which will allow you to understand the principle of jsonp (old)(jsonp)
The js cross-domain here refers to data transfer or communication between different domains through js, for example, by ajax to request data from a different domain, or by js to access a framework of different domains in the page (if)If there's any difference between the protocol, the domain name, the port, it's all...
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The js cross-domain here refers to data transfer or communication between different domains through js, for example, by ajax to request data from a different domain, or by js to access a framework of different domains in the page (if)If there's any difference between the protocol, the domain name, the port, it's all...
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The js cross-domain here refers to data transfer or communication between different domains through js, for example, by ajax to request data from a different domain, or by js to access a framework of different domains in the page (if)If there's any difference between the protocol, the domain name, the port, it's all...
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The js cross-domain here refers to data transfer or communication between different domains through js, for example, by ajax to request data from a different domain, or by js to access a framework of different domains in the page (if)If there's any difference between the protocol, the domain name, the port, it's all...
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