var obj = {'name' : 'quan' , 'sex' : 'male'};
var arr = Object.keys(obj);
console.log(arr); //array
console.log(arr.length); //2
var obj = {'name' : 'quan' , 'sex' : 'male'};
var arr = Object.keys(obj);
console.log(arr); //array
console.log(arr.length); //2