How to catch 401 error using fetch method of javascript

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野性不改
野性不改 2021-02-12 10:09

I need to catch error 401 Code of response so that I can retry after getting a new token from token endpoint. I am using fetch method get data from API.

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  •  忘掉有多难
    2021-02-12 10:54

    (function () {
    var originalFetch = fetch;
    fetch = function() {
        return originalFetch.apply(this, arguments).then(function(data) {
            someFunctionToDoSomething();
            return data;
        });
    };})();
    

    source Can one use the Fetch API as a Request Interceptor?

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