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diff --git a/‎Promise理解和Demo/javascript-promise-book.pdf
1.21 MB b/‎Promise理解和Demo/javascript-promise-book.pdf
1.21 MB
diff --git a/‎Promise理解和Demo/promise和数组.html
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+<!DOCTYPE html>
+<html lang="en">
+
+<head>
+    <meta charset="utf-8">
+    <script type="text/javascript">
+    //使用Promise#then同时处理多个异步请求
+    function getURL(url) {
+        return new Promise(function(resolve, reject) {
+            var req = new XMLHttpRequest();
+            req.open('GET', url, true);
+            req.onlaod = function() {
+                if (req.status === 200) {
+                    resolve(req.responseText);
+                } else {
+                    reject(new Error(req.statusText));
+                }
+            }
+            req.onerror = function() {
+                reject(new Error(req.statusText));
+            }
+            req.send();
+        });
+    }
+    var request = {
+        comment: function getComment() {
+            return getURL('http://azu.github.io/promises-book/json/comment.json').then(JSON.parse);
+        },
+        people: function getPeople() {
+            return getURL('http://azu.github.io/promises-book/json/people.json').then(JSON.parse);
+        }
+    };
+    function main() {
+    	return Promise.all([request.comment(),request.people()]);
+    }
+    main().then(function(value) {
+    	console.log(value);
+    }).catch(function(error) {
+    	console.log(error);
+    });
+    </script>
+</head>
+
+<body>
+</body>
+
+</html>