javascript - 在对象 `this` 中使用 "Unexpected token this"

Question

我正在使用 DOMString 对象来设置 DOM。我使用 this 指向 init 但它显示 Unexpected token this。我正在学习 JavaScript。请帮助我如何使用它。非常感谢。

let imageView = {

init: function () {
    // store pointers to our DOM elements for easy access later
    let DOMstrings = {
        containerElem: '#cat',
        nameElem: '#cat-name',
        imageElem: '#cat-img',
        countElem: '#cat-count'
    },
    this.catElem = document.getElementById(this.DOMstrings.containerElem);
    this.catNameElem = document.getElementById(this.DOMstrings.nameElem);
    this.catImageElem = document.getElementById(this.DOMstrings.imageElem);
    this.countElem = document.getElementById(this.DOMstrings.countElem);
};

Answer 1

在 DOMstrings 对象后面有一个逗号，它应该是一个分号。

试试这个:

let imageView = {

    init: function () {
        // store pointers to our DOM elements for easy access later
        let DOMstrings = {
            containerElem: '#cat',
            nameElem: '#cat-name',
            imageElem: '#cat-img',
            countElem: '#cat-count'
        };
        this.catElem = document.getElementById(DOMstrings.containerElem);
        this.catNameElem = document.getElementById(DOMstrings.nameElem);
        this.catImageElem = document.getElementById(DOMstrings.imageElem);
        this.countElem = document.getElementById(DOMstrings.countElem);
    }