i don’t know how to use matlab in javascript

You cannot use Matlab directly in Javascript since they are two separate programming languages. However, you can use a library or API like MathWorks' MATLAB Online API to execute calculations in Matlab using Javascript.

First, you need to create an account on MATLAB Online that provides APIs to connect to MATLAB. After creating an account and generating an access token, you can use the API to execute Matlab code from Javascript.

Here is an example of how to use the Matlab Online API in Javascript:

index.tsx
var url = "https://matlab.mathworks.com";

var data = {
    "code": "a=rand(2000); b=rand(2000); c=a*b;",
    "inputs": {},
    "outputs": [{"name": "c", "type": "matrix"}]
};

fetch(url + "/matlabapi/v1/execute?access_token=YOUR_ACCESS_TOKEN", {
    method: "POST",
    headers: {
        "Content-Type": "application/json"
    },
    body: JSON.stringify(data)
})
.then(response => response.json())
.then(data => console.log(data))
.catch(error => console.error(error));
473 chars
19 lines

This code sends a request to Matlab Online API to execute a simple multiplication of two random matrices. You will need to replace YOUR_ACCESS_TOKEN with the access token that you generated on Matlab Online website.

Note that this is just a simple example of how to connect to Matlab Online API from Javascript. The official documentation of Matlab Online and relevant Javascript libraries should be consulted for a more comprehensive guide.