DefineProperty accessor property error stack overflow

var book = {
    year:2004,
    edition:1
}
Object.defineProperty(book,"year",{
    get:function(){
        return this.year
    },
    set:function(newVal){
        if(newVal>2004){
            this.year = newVal ;
            this.edition += newVal - 2004 ;
        }
    }
});
book.year = 2005 ;
console.log(book.edition)

as shown above, running directly will report an error Maximum call stack size exceeded 

at Object.set [as year]

but if you add an identifier or other letter before the year, there will be no problem. Who can answer it?

Javascript
Mar.05,2021

you define setter, to year and then assign a value to year in setter, which calls the setter, loop and calls

in this case, it is generally recommended to use closures to handle circular calls 



[Getter/Setter]


var book = {
    year:2004,
    edition:1
}

let temp=book.year //book = {    year:2004,    edition:1}

Object.defineProperty(book,"year",{
    get:function(){
        return temp
    },
    set:function(newVal){
        if(newVal>2004){
            temp = newVal ;
            this.edition += newVal - 2004 ;
        }
    }
});             //book = {    year:[Getter/Setter],    edition:1}
book.year = 2005 ;
console.log(book.edition)

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