HarmonyOS 如何遍历一个JSON Object

const jsonStr = '{"name": "Alice", "age": 30}'; 
let jsonObj: Object = JSON.parse(jsonStr); 
 
let keyArr: string[] = Object.keys(jsonObj); 
let valueArr: string[] = Object.values(jsonObj); 
let entryArr: [string, string][] = Object.entries(jsonObj) 
for(let i = 0; i < entryArr.length; i++){ 
  console.log(keyArr[i]+":" + valueArr[i]); 
}