当我单击“计算”按钮时，它如何获取每个A，B框中的值，并将这些值传递给服务器以计算结果并发出Alert（）？

Question

I want to do a simple sum calculation GUI. The website will prompt the user input variable A,B and send to server ( c++ file will do the job ) to calculate and A+B return result by alert().
I have 2 input boxes "variable A" and "Variable B". When I click the "Calculate" button, how can it get the values in each box A,B and pass those value to server to calculate and alert() the result? I am using js and react-bootstrap to develop the website.

Answer 1

You need to do some kind of XMLHttpRequests as mentioned above. You could choose any one of the many XHR libraries out there or use the Fetch API

You can refer to the following link to better choose a particular solution according to your needs.

Answer 2

You might want to look into Axios , on how to post data to your server.

You'll have to make XMLHttpRequests from the browser to your server.