JS如何獲得JSON字段的長(zhǎng)度

//JS 獲得JSON 字典的長(zhǎng)度的代碼 
 
var jsonData = {"name":"txt1","name2":"txt2"}; 
 
function getJsonLength(jsonData) { 
 
 var jsonLength = 0; 
 
 for (var item in jsonData) { 
 
 jsonLength++; 
 
 } 
 
 return jsonLength; 
 
} 
 
console.log("json對(duì)象的長(zhǎng)度為:",getJsonLength(jsonData));