javascript - 数组作为对象对象输出

Question

抱歉，如果我解释错误，但我有一个对象，它是一个数组，我试图获取要输出的字段，但我得到的只是 [object object]

$.getJSON( "https://service1.homepro.com/smart.asmx/GetFAP_ProfileReviewsJSON?bid=141772&sort=1&page=1", function( data ) {
        // console.log(data);
        xmlText = data;
        var jsonObj = x2js.xml_str2json( xmlText );
        // console.log(jsonObj.SMART);

        var html = '<div class="review">';
        $.each( jsonObj, function( key, answer ) {
        // console.log('key', key);
        console.log('answer', answer);

        html += '<div>' + answer + '</div>';
        // html += '<div>' + key + '</div>';
    });

    $('div').html(html);
});

任何人都可以帮助我或告诉我哪里出了问题吗？

谢谢

Answer 1

在 JavaScript 中 [object object] 是 JavaScript object 的默认字符串表示形式(如果它不是 null 或 undefined) ，你可以在JavaScript toString() Reference中看到那:

Every object has a toString() method that is automatically called when the object is to be represented as a text value or when an object is referred to in a manner in which a string is expected. By default, the toString() method is inherited by every object descended from Object. If this method is not overridden in a custom object, toString() returns "[object type]", where type is the object type. The following code illustrates this:

var o = new Object();
o.toString(); // returns [object Object]

Note: Starting in JavaScript 1.8.5 toString() called on null returns [object Null], and undefined returns [object Undefined], as defined in the 5th Edition of ECMAScript and a subsequent Errata. See Using_toString()_to_detect_object_class.

解决方案:

• 如果您想打印您的对象，您需要编写一个自定义 函数将通过生成自定义表示来为您完成此操作 根据对象的属性来确定对象的属性。
• 您还可以使用 JSON.stringify(answer) 它将返回您的对象 作为字符串，但我认为它不会给你想要的输出 参见。