javascript遍历对象使用for( let i in obj ) { obj.xxx = XXX, console.log( obj[ i ] ) }
let obj = {
username:"baobao",
age:13,
price:1888888
}

for (let i in obj) {
obj.age = 15
console.log(obj[i])
}
控制台输出为 baobao 15 1888888