HarmonyOS 用什么api替换所有的需要替换的内容

@Entry 
@Component 
struct Index { 
  @State message: string = 'Hello World'; 
 
  build() { 
    Row() { 
      Column() { 
        Text(this.message) 
          .fontSize(50) 
          .fontWeight(FontWeight.Bold) 
          .onClick(()=>{ 
            let str="1 2 3"; 
            str=str.replace(RegExp(" ", "g"),"*");//'1*2*3' 
            console.log(str) 
          }) 
      } 
      .width('100%') 
    } 
    .height('100%') 
  } 
}