Javascript SyntaxError：意外令牌'（'

Question

I'm having a strange issue when defining a method named get or set inside a class. For example, I am defining the class Mem as follows:

class Mem {
    constructor() {
        this.list=[]
    }

    get(index) {
        return this.list[index];
    }

    set(index, value) {
        this.list[index] = value;
    }
}

But I get a SyntaxError: Unexpected token '('

However, when I change the method name to geta or seta , the class definition works and I don't get the SyntaxError.

class Mem {
    constructor() {
        this.list=[]
    }

    geta(index) {
        return this.list[index];
    }

    seta(index, value) {
        this.list[index] = value;
    }
}

I checked that get and set were not restricted keywords in Javascript, so I am confused as to what I am doing wrong.

Answer 1

You are colliding with the getter and setter syntax .

{get prop() { ... } }
{get [expression]() { ... } }