Object.defineProperties()使用方法
Object.defineProperties()使用方法nvar book=;nObject.defineProperties(book,n _year:n writable:true,n value:2004n ,n edition:n writable:true,n value:1n ,n y…
Object.defineProperties()使用方法nvar book=;nObject.defineProperties(book,n _year:n writable:true,n value:2004n ,n edition:n writable:true,n value:1n ,n y…