Javascript 循环遍历对象数组

Question

我试图循环遍历一个数组，它一直显示 length是 0

数组截图:

我已经尝试过for(key in results)...和for( var i = 0; i < length...但两者都不在循环内运行任何内容:console.log(results[i]); // Or key if it's a key in loop

我确信这是一个菜鸟错误，有人能发现吗？

我正在使用的代码:

    var store = new Lawnchair({name: 'testing'}, function (store) {

        // Create an object
        var me = {key: 'Jordy', age: 19, date_of_birth: "1233-09-06"};
        var mee = {key: 'dude', age: 17, date_of_birth: "2222-09-06"};
        var meee = {key: 'gast', age: 8, date_of_birth: "5555-09-06"};

        // Save it
        store.save(me);
        store.save(mee);
        store.save(meee);

//         Access it later... Yes even after a page refresh!
        store.where('record.age < 20', function (records) {
            var html = "";
            var list = document.getElementById('people');
//            for (var i = 0; i < records.length; i++) {
//                var record = records[i];
//                html += "<li>" + record.key + " is " + record.age + " years old and was born on " + record.date_of_birth + "</li>";
//            }

            for(var key in records){
                console.log("SD");
            }

            console.log(records);
            list.innerHTML = html;

        });
    });

当我 console.log(records)如上所示，结果是屏幕截图。当我循环它时，没有任何反应，因为 records.length === 0

编辑:

store.where('record.age < 20', function(records){
        console.log(records); // Array with property length 3
        console.log(records.length); // 0
    });

第一个console.log显示数组 records.length === 3但第二个console.log显示0 。怎么办？

Answer 1

如果不提供代码，很难说您是否犯了菜鸟错误!我发现您使用的是 length 而不是 arrayName.length？我不知道你的数组的名称...

for (var i = 0; i < array.length;i++){
    //logic here
    };