update

simple-demo/js/util.js

@@ -59,7 +59,7 @@ axios.interceptors.response.use(function (response) {
  * @type {{async: (function(*, *, *, *): Promise<unknown>), xhr_send: request.xhr_send, sync: (function(*, *, *, *): any)}}
  */
 const requestUtil = {
-    xhr_send: function (xhr, method, headers, data) {
+    xhr_send(xhr, method, headers, data) {
         if (headers) {
             for (const key in headers) {
                 xhr.setRequestHeader(key, headers[key]);
@@ -67,8 +67,8 @@ const requestUtil = {
         }
 
         if (method.match(/^(POST|PUT)$/i)) {
-            if (!headers || headers.indexOf("Content-Type") <= 0) {
-                xhr.setRequestHeader('Content-Type', 'application/json');
+            if (!headers || !headers.hasOwnProperty("Content-Type")) {
+                xhr.setRequestHeader("Content-Type", "application/json");
             }
             xhr.send(JSON.stringify(data));
         } else {
@@ -81,7 +81,7 @@ const requestUtil = {
      *     .then(data => console.log(data))
      *     .catch(error => console.error(error));
      */
-    async: function (url, method, data, headers) {
+    async(url, method, data = {}, headers = {}) {
         return new Promise((resolve, reject) => {
             const xhr = new XMLHttpRequest();
             xhr.open(method, url, true);
@@ -95,7 +95,7 @@ const requestUtil = {
     /**
      * 拼接 url
      */
-    buildUrl: function (url, params) {
+    buildUrl(url, params) {
         const urlObj = new URL(url);
         // @ts-ignore
         for (const key in params) {
@@ -104,17 +104,16 @@ const requestUtil = {
         return urlObj.toString();
     },
 
-
     /**
      * 同步请求 let a = request.sync("https://httpbin.tianyunperfect.cn/ip","GET",null,null)
      */
-    sync: function (url, method, data, headers) {
+    sync(url, method, data = {}, headers = {}) {
         const xhr = new XMLHttpRequest();
         xhr.open(method, url, false);
         this.xhr_send(xhr, method, headers, data);
         return JSON.parse(xhr.responseText);
-    }
-}
+    },
+};
 
 
 /**