add

t.js

@@ -0,0 +1,52 @@
+let employeeList = [
+    {
+        id: -1,
+        name: "Toàn",
+        age: 33,
+        gender: "male" // male, female, other
+    },
+    {
+        id: 1,
+        name: "Tiến",
+        age: 33,
+        gender: "male" // male, female, other
+    },
+    {
+        id: 2,
+        name: "Hải",
+        age: 33,
+        gender: "male" // male, female, other
+    }
+]
+
+
+
+function deleteItem(id) {
+    // for(let i = 0; i < employeeList.length; i++) {
+    //     if(id == employeeList[i].id) {
+    //         employeeList.splice(i, 1)
+    //         break
+    //     }
+    // }
+
+    employeeList = employeeList.filter(em => em.id != id)
+}
+
+function findById(id, arr) {
+    // for (let i = 0; i < arr.length; i++) {
+    //     if (id == arr[i].id) {
+    //         return arr[i]
+    //     }
+    // }
+
+    return arr.find(em => em.id == id)
+}
+
+
+let findEmp = findById(1, employeeList)
+
+findEmp.age = 18
+
+console.log("findEmp", findEmp)
+
+console.log("employeeList", employeeList)