Implemented gjson Example

1. New 2.NewWithTag 3.NewWithOptions

encoding/gjson/gjson_z_example_new_test.go

@@ -72,3 +72,61 @@ func Example_newFromStructWithTag() {
 	// 100
 	// engineer
 }
+
+func ExampleNew() {
+	jsonContent := `{"name":"john", "score":"100"}`
+	j := gjson.New(jsonContent)
+	fmt.Println(j.Get("name"))
+	fmt.Println(j.Get("score"))
+
+	// Output:
+	// john
+	// 100
+}
+
+func ExampleNewWithTag() {
+	type Me struct {
+		Name  string `tag:"name"`
+		Score int    `tag:"score"`
+		Title string
+	}
+	me := Me{
+		Name:  "john",
+		Score: 100,
+		Title: "engineer",
+	}
+	j := gjson.NewWithTag(me, "tag")
+	fmt.Println(j.Get("name"))
+	fmt.Println(j.Get("score"))
+	fmt.Println(j.Get("Title"))
+
+	// Output:
+	// john
+	// 100
+	// engineer
+}
+
+func ExampleNewWithOptions() {
+	type Me struct {
+		Name  string `tag:"name"`
+		Score int    `tag:"score"`
+		Title string
+	}
+	me := Me{
+		Name:  "john",
+		Score: 100,
+		Title: "engineer",
+	}
+
+	j := gjson.NewWithOptions(me, gjson.Options{
+		Tags: "tag",
+	})
+	fmt.Println(j.Get("name"))
+	fmt.Println(j.Get("score"))
+	fmt.Println(j.Get("Title"))
+
+	// Output:
+	// john
+	// 100
+	// engineer
+}