Vue with axios api delay

note
source from 
axios/axios#164 (comment)

README.md

@@ -0,0 +1,38 @@
+# Memo
+axios.interceptors.response.use(undefined, function axiosRetryInterceptor(err) {
+    var config = err.config;
+    // If config does not exist or the retry option is not set, reject
+    if(!config || !config.retry) return Promise.reject(err);
+
+    // Set the variable for keeping track of the retry count
+    config.__retryCount = config.__retryCount || 0;
+
+    // Check if we've maxed out the total number of retries
+    if(config.__retryCount >= config.retry) {
+        // Reject with the error
+        return Promise.reject(err);
+    }
+
+    // Increase the retry count
+    config.__retryCount += 1;
+
+    // Create new promise to handle exponential backoff
+    var backoff = new Promise(function(resolve) {
+        setTimeout(function() {
+            resolve();
+        }, config.retryDelay || 1);
+    });
+
+    // Return the promise in which recalls axios to retry the request
+    return backoff.then(function() {
+        return axios(config);
+    });
+});
+#example
+axios.get('/some/endpoint', { retry: 5, retryDelay: 1000 })
+    .then(function(res) {
+        console.log('success', res.data);
+    })
+    .catch(function(err) {
+        console.log('failed', err);
+    });