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How to use Cors in JavaScript in Salesforce?
For example, using CORS, JavaScript code at https://www.example.com could request a resource from https://www.salesforce.com. To access supported Salesforce APIs, Apex REST resources, and Lightning Out from JavaScript code in a web browser, add the origin serving the code to a Salesforce CORS allowlist.
How to access Salesforce APIs from a web browser?
To access supported Salesforce APIs, Apex REST resources, and Lightning Out from JavaScript code in a web browser, add the origin serving the code to a Salesforce CORS allowlist. These Salesforce technologies support CORS. In Salesforce, add the origin serving the code to a CORS allowlist.
How to add origin to Cors allowlist in Salesforce?
In Salesforce, add the origin serving the code to a CORS allowlist. If a browser that supports CORS makes a request to an origin in the allowlist, Salesforce returns the origin in the Access-Control-Allow-Origin HTTP header along with any additional CORS HTTP headers.
How to return origin status code in Salesforce?
If a browser that supports CORS makes a request to an origin in the allowlist, Salesforce returns the origin in the Access-Control-Allow-Origin HTTP header along with any additional CORS HTTP headers. If the origin isn’t included in the allowlist, Salesforce returns HTTP status code 403.
How to access Salesforce resources from web browsers?
Use CORS to Access Salesforce Resources from Web Browsers. Cross-Origin Resource Sharing (CORS) enables web browsers to request resources from origins other than their own (cross-origin). For example, using CORS, JavaScript code at https://www.example.com could request a resource from https://www.salesforce.com.
Why do I get an error on Cors?
Thus your request doesn’t succeed and the browser gives you the error. What is a little confusing about CORS is that you make a request to the server and it will respond with headers to indicate whether the request was allowed or not. You are absolutely right. This is cross origin call.
What is the status code for Salesforce origin?
If the origin is not included in the allowlist, Salesforce returns HTTP status code 403. From Setup, enter CORS in the Quick Find box, then select CORS. Select New.