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Cross-domain access issues, I believe everyone has encountered. This is a very tricky question. But however persuasive, outsmart, there is always a solution to this kind of problem. Recently I have come into contact with this problem, the solution is AJAX+JSONP.Speaking of this problem, we have to say "homologous strategy", which is a famous security policy proposed by Netscape. Same-origin. This policy is now used by all JavaScript-enabled browsers.

is, the cross-origin access requests generated by the user to access website B are submitted to the specified page of website B, which replaces the user page for interaction, return the appropriate results. 2. Cross-origin security restrictions refer to cross-origin security restrictions on the browser side. The server side does not have cross-

When a 403 Cross-domain error occurs, the No ' Access-control-allow-origin ' header is present on the requested resource needs to be configured with the header parameter of the response for the Nginx server: First, the solution You only need to configure the following parameters in the Nginx configuration file: Location/{ add_header access-control-allow-origin *; Add_header access-control-allow-header

When a 403 cross-domain error occursNo ‘Access-Control-Allow-Origin‘ header is present on the requested resource, you need to configure the header parameters for the response to the Nginx server:First, the solutionYou only need to configure the following parameters in the Nginx configuration file:location / { add_header Access-Control-Allow-Origin *; add_header Access-Control-Allow-Headers "

Original 53580683No ‘Access-Control-Allow-Origin‘ header is present on the requested resource.What is cross-domain accessFor a chestnut: In a site, we want to use Ajax to get specific content from the B site. Cross-domain access issues occur if the A site is not in the same domain as the B site. You can understand that two domain names cannot cross a domain name to send requests or request data, otherwise it is unsafe. Cross-domain access violates the

Tags: use IP) between Header response remote Ros requested defaultNo ' Access-control-allow-origin ' header is present on the requested resource.When using AJAX to access a remote server, the request fails and the browser is reported as an error. This is due to security considerations, which prohibit cross-domain access by default. One, what is cross-domain access For a chestnut: In a site, we want to use Ajax to get specific content from the B site.

This Policy imposes significant limitations on the page content that JavaScript code can access, that is, JavaScript can only access content in the same domain as the document containing it.JavaScript, a security policy, is particularly important in Multi-iframe or Multi-Window Programming and Ajax programming. According to this policy, the JavaScript code contained in the page under baidu.com cannot access the page content under the google.com domain name; even pages of different subdomains can

This article mainly introduces the javascript same-origin policy and analyzes in detail the concept of same-origin policy in javascript and related application precautions, for more information about the js same-origin policy, see the following section. Share it with you for your reference. The details are as follows: Concept: same-

GetJSON cross-origin SyntaxError analysis, getjsonsyntaxerror. GetJSON cross-origin SyntaxError problem analysis. getjsonsyntaxerror wrote a function yesterday: Click "mobile phone verification" to obtain json data at the same time. The javascript code is as follows: $ (. check_mobile). getJSON cross-origin SyntaxError problem analysis, getjsonsyntaxerror Yester

What is a cross-origin request? A simple understanding is to send a request to a server file that is not in the same domain name. This is an example. For example, if baidu.com sends a request to phpernote.com, the two domain names are different, so this is cross-origin. For the sake of security, this is not allowed. In addition, it should be noted that requests sent between different subdomain names, differ

What Is AJAX cross-origin request? For the sake of security, if you want to request the content of another website www. B .com via Ajax from www.a.com, the browser does not allow you to do this (I do not understand what security here refers? Think about what hackers can do without this restriction ). Under what circumstances is cross-origin? Domain names are different. For example, if a.com sends a request

Details of js jsop cross-origin request instances, jsjsop Cross-origin problems encountered during project development are generally solved through JSONP. But what exactly is JSONP and the principle of implementation. You can take a good look at the project's free time. 1. What is JSONP? To understand JSONP, I have to mention JSON. What is JSON? JSON is a subset of the object literal notation of JavaScript.

What is cross-origin? Concept: as long as the Protocol, domain name, and port are different, they are regarded as different domains. The URL indicates whether www communication is allowed. a. coma. jswww. a. comb. www. a. comlaba. jswww. a. comscriptb. different folders under the same domain name of js allow www. a .. what is cross-origin? Concept: as long as the Protocol, domain name, and port are differen