Edit promise reduce4

PromiseReduce.js

@@ -0,0 +1,49 @@
+async function PromiseReduce() {
+
+  var arrayResolve = [];
+  var flag = 1;
+  var reduceFun = arguments[1];
+  var reduceInitValue = arguments[2];
+  var res = 0;
+  var i = 0;
+
+  var TempArray = async function(x) {
+    while (i < x.length) {
+      await x[i].then((val) => {
+        arrayResolve.push(val);
+        console.log('-', val);
+      }).catch(() => {
+        flag = 0;
+      });
+      i++;
+    }
+  }
+
+  await TempArray(arguments[0]);
+
+  if (flag === 0)
+    throw new Error('Oops');
+
+  if (typeof(reduceInitValue) != 'undefined') {
+    res = arrayResolve.reduce(reduceFun, reduceInitValue);
+  } else {
+    res = arrayResolve.reduce(reduceFun);
+  };
+
+  return (res);
+
+}
+
+// var p1 = Promise.resolve(13);
+// var p2 = Promise.resolve(2);
+// var p3 = Promise.resolve(9);
+// var p4 = Promise.resolve(1);
+// var p5 = Promise.reject(3);
+// var p6 = new Promise((resolve) => {
+//   setTimeout(() => {
+//     resolve(100);
+//   }, 5000);
+// });
+// PromiseReduce([p1,p2,p3,p4],(a,b)=>(a*b)).then ((r)=>(console.log(r)))
+// PromiseReduce([p1,p2,p3,p5],(a,b)=>(a*b)).then ((r)=>(console.log(r)))
+// PromiseReduce([p1,p2,p3,p6],(a,b)=>(a*b)).then ((r)=>(console.log(r)))

promiseReduce.js

@@ -0,0 +1,39 @@
+var promiseReduce = function() {
+
+    var Promise0 = arguments[0][0];
+    var Promise1 = arguments[0][1];
+    var Promise2 = arguments[0][2];
+    var reduceFun = arguments[1];
+    var reduceInitValue = arguments[2];
+    var arrayResolve = [];
+    var res;
+    var flag;
+
+    Promise0.then((value0) => {
+        arrayResolve.push(value0);
+        return Promise1
+    }).then((value1) => {
+        arrayResolve.push(value1);
+        return Promise2
+    }).then((value2) => {
+        arrayResolve.push(value2);
+        if (typeof(reduceInitValue) != 'undefined') {
+            res = arrayResolve.reduce(reduceFun, reduceInitValue);
+            flag = 1;
+        } else {
+            res = arrayResolve.reduce(reduceFun);
+            flag = 1;
+        };
+    }).catch(() => {
+        res = 'eRRoR';
+        flag = 0;
+    });
+
+    return new Promise((resolve, reject) => {
+        setTimeout(() => {
+            if (flag === 1) resolve(res);
+            else reject(res);
+        }, 1)
+    });
+
+};