diff --git a/go.mod b/go.mod
index eed65bf..19b37c7 100644
--- a/go.mod
+++ b/go.mod
@@ -3,9 +3,9 @@ module apigo.cc/gojs/util
 go 1.18
 
 require (
-	apigo.cc/gojs v0.0.4
+	apigo.cc/gojs v0.0.7
 	github.com/ZZMarquis/gm v1.3.2
-	github.com/emmansun/gmsm v0.29.2
+	github.com/emmansun/gmsm v0.29.3
 	github.com/obscuren/ecies v0.0.0-20150213224233-7c0f4a9b18d9
 	github.com/ssgo/u v1.7.11
 	gopkg.in/yaml.v3 v3.0.1
diff --git a/util.go b/util.go
index a5ec94c..308e7c7 100644
--- a/util.go
+++ b/util.go
@@ -604,16 +604,75 @@ func init() {
 				panic(vm.NewGoError(err))
 			}
 		},
-		"id": func(argsIn goja.FunctionCall, vm *goja.Runtime) goja.Value {
-			return vm.ToValue(u.Id12())
-		},
 		"uniqueId": func(argsIn goja.FunctionCall, vm *goja.Runtime) goja.Value {
-			return vm.ToValue(u.UniqueId())
+			args := gojs.MakeArgs(&argsIn, vm)
+			size := args.Int(0)
+			var id string
+			if size >= 20 {
+				id = u.UniqueId()
+			} else if size >= 16 {
+				id = u.UniqueId()[0:16]
+			} else if size >= 14 {
+				id = u.ShortUniqueId()
+			} else if size >= 12 {
+				id = u.ShortUniqueId()[0:12]
+			} else {
+				id = u.UniqueId()
+			}
+			return vm.ToValue(id)
+		},
+		"uniqueIdL": func(argsIn goja.FunctionCall, vm *goja.Runtime) goja.Value {
+			args := gojs.MakeArgs(&argsIn, vm)
+			size := args.Int(0)
+			var id string
+			if size >= 20 {
+				id = u.UniqueId()
+			} else if size >= 16 {
+				id = u.UniqueId()[0:16]
+			} else if size >= 14 {
+				id = u.ShortUniqueId()
+			} else if size >= 12 {
+				id = u.ShortUniqueId()[0:12]
+			} else {
+				id = u.UniqueId()
+			}
+			return vm.ToValue(strings.ToLower(id))
+		},
+		"id": func(argsIn goja.FunctionCall, vm *goja.Runtime) goja.Value {
+			args := gojs.MakeArgs(&argsIn, vm)
+			size := args.Int(0)
+			var id string
+			if size >= 12 {
+				id = u.Id12()
+			} else if size >= 10 {
+				id = u.Id10()
+			} else if size >= 8 {
+				id = u.Id8()
+			} else {
+				id = u.Id6()
+			}
+			return vm.ToValue(id)
+		},
+		"idL": func(argsIn goja.FunctionCall, vm *goja.Runtime) goja.Value {
+			args := gojs.MakeArgs(&argsIn, vm)
+			size := args.Int(0)
+			var id string
+			if size >= 12 {
+				id = u.Id12()
+			} else if size >= 10 {
+				id = u.Id10()
+			} else if size >= 8 {
+				id = u.Id8()
+			} else {
+				id = u.Id6()
+			}
+			return vm.ToValue(strings.ToLower(id))
 		},
 		"token": func(argsIn goja.FunctionCall, vm *goja.Runtime) goja.Value {
-			size := 20
-			if len(argsIn.Arguments) > 0 {
-				size = u.Int(argsIn.Arguments[0].Export())
+			args := gojs.MakeArgs(&argsIn, vm)
+			size := args.Int(0)
+			if size == 0 {
+				size = 20
 			}
 			return vm.ToValue(u.MakeToken(size))
 		},
diff --git a/util.ts b/util.ts
index d68f4ec..5be590a 100644
--- a/util.ts
+++ b/util.ts
@@ -45,7 +45,9 @@ export default {
     gzip,
     gunzip,
     id,
+    idL,
     uniqueId,
+    uniqueIdL,
     token,
     md5,
     sha1,
@@ -127,8 +129,10 @@ function encryptRSA(data: any, pubKey: any): any { return '' }
 function decryptRSA(data: any, priKey: any): any { return '' }
 function gzip(data: any): string { return '' }
 function gunzip(data: string): any { return null }
-function id(): string { return '' }
-function uniqueId(): string { return '' }
+function id(size?: number): string { return '' }
+function idL(size?: number): string { return '' }
+function uniqueId(size?: number): string { return '' }
+function uniqueIdL(size?: number): string { return '' }
 function token(size: number): any { return '' }
 function md5(...data: any[]): any { return '' }
 function sha1(...data: any[]): any { return '' }