add(server.tests.test2): 添加实验2的内容，将pdf里面标重要的进行提取出来

Server/tests/test2/important/sort.js

@@ -0,0 +1,55 @@
+const data1 = [1, 30, 4, 20, 10]
+data1.sort()
+console.log(data1)
+
+// arr.sort(
+//     function (a, b) {...}
+// )
+
+const data2 = [1, 30, 4, 20, 10]
+// 升序排列
+data2.sort((a, b) => a - b)
+console.log(data2)
+
+const data3 = [1, 30, 4, 20, 10]
+// 降序排列
+data3.sort((a, b) => b - a)
+console.log(data3)
+
+const data4 = [
+    { name: 'zs', age: 28, score: 90 },
+    { name: 'ls', age: 38, score: 70 },
+    { name: 'sb', age: 18, score: 70 }
+]
+data4.sort((a, b) => {
+    return a.age - b.age
+})
+console.log(data4)
+
+data4.sort((a, b) => {
+    // 先按分数升序
+    let scoreRst = a.score - b.score
+    // 如果分数相同
+    if (scoreRst == 0)
+        // 按年龄降序
+        return b.age - a.age
+    return scoreRst
+})
+console.log(data4)
+
+/*
+# node sort.js 
+[ 1, 10, 20, 30, 4 ]
+[ 1, 4, 10, 20, 30 ]
+[ 30, 20, 10, 4, 1 ]
+[
+  { name: 'sb', age: 18, score: 70 },
+  { name: 'zs', age: 28, score: 90 },
+  { name: 'ls', age: 38, score: 70 }
+]
+[
+  { name: 'ls', age: 38, score: 70 },
+  { name: 'sb', age: 18, score: 70 },
+  { name: 'zs', age: 28, score: 90 }
+]
+*/