javascript - 访问 JSON 对象数组内的变量

Question

我正在尝试访问存储在该 JSON 数组中的每个对象的“photor”和“captionr”。但它不起作用并给我一个错误“无法读取未定义的属性'photor'”

var slideshow = {

    directory: "images/",

    photos:[
            { "photor": "aurelius.jpg", "captionr" : "Mark Aurelius"}, 
            { "photor": "cesar.png", "captionr" : "Gaius Julius Ceasar"},
            { "photor": "couple.jpg", "captionr" : "Greek Couple"},
            { "photor": "flavian.jpg", "captionr" : "Flavian Woman"},
            { "photor": "lucius.jpg", "captionr" : "Lucius Verus"},
            { "photor": "lupe.jpg", "captionr" : "Emperor Caracalla"},
            { "photor": "sabina.jpg", "captionr" : "Sabina"}
            ],

    currentPhoto: 0,

    getPrevious: function(){
            if (this.currentPhoto == 0) 
                this.currentPhoto = this.photos.length-1;
            else
                this.currentPhoto--;

            var photo   = this.directory + this.photos[this.currentPhoto][0].photor;
            var caption = this.photos[this.currentPhoto][1].captionr;
            return { "photo": photo, "caption": caption };
        };

         var photo=this.directory+this.photos[this.currentPhoto].photor;
    var caption=this.photos[this.currentPhoto].captionr;

Answer 1

试试这个

var photo = this.directory + this.photos[this.当前照片].photo;