update severale solution.md

leviding · leviding · commit f72e035afb73 · 2020-03-05T15:39:38.000+08:00
diff --git a/1-js/04-object-basics/01-object/8-multiply-numeric/solution.md b/1-js/04-object-basics/01-object/8-multiply-numeric/solution.md
@@ -1,10 +0,0 @@
-
-```
-function multiplyNumeric(obj) {
-  for (let key in obj) {
-    if (typeof obj[key] == 'number') {
-      obj[key] *= 2;
-    }
-  }
-}
-```
diff --git a/1-js/05-data-types/03-string/4-extract-currency/solution.md b/1-js/05-data-types/03-string/4-extract-currency/solution.md
@@ -1 +0,0 @@
-
diff --git a/1-js/05-data-types/05-array-methods/2-filter-range/solution.md b/1-js/05-data-types/05-array-methods/2-filter-range/solution.md
@@ -1,14 +1,14 @@
 ```js run demo
 function filterRange(arr, a, b) {
-  // added brackets around the expression for better readability
+  // 在表达式周围添加了括号，以提高可读性
   return arr.filter(item => (a <= item && item <= b));
 }
 
 let arr = [5, 3, 8, 1];
 
 let filtered = filterRange(arr, 1, 4);
 
-alert( filtered ); // 3,1 (matching values)
+alert( filtered ); // 3,1（匹配的值）
 
-alert( arr ); // 5,3,8,1 (not modified)
+alert( arr ); // 5,3,8,1（未经改动的数组中的值）
 ```
diff --git a/1-js/05-data-types/05-array-methods/3-filter-range-in-place/solution.md b/1-js/05-data-types/05-array-methods/3-filter-range-in-place/solution.md
@@ -4,7 +4,7 @@ function filterRangeInPlace(arr, a, b) {
   for (let i = 0; i < arr.length; i++) {
     let val = arr[i];
 
-    // remove if outside of the interval
+    // 如果超出范围，则删除
     if (val < a || val > b) {
       arr.splice(i, 1);
       i--;
@@ -15,7 +15,7 @@ function filterRangeInPlace(arr, a, b) {
 
 let arr = [5, 3, 8, 1];
 
-filterRangeInPlace(arr, 1, 4); // removed the numbers except from 1 to 4
+filterRangeInPlace(arr, 1, 4); // 删除 1 到 4 范围之外的值
 
 alert( arr ); // [3, 1]
 ```
