否. ECMAScript指定这样的哈希行为: http://bclary.com/2004/11/07 /#a-8.6

No. ECMAScript specifies hash behavior as such: http://bclary.com/2004/11/07/#a-8.6

对象是属性的无序集合.每个属性都包含一个名称，一个值和一组属性.

An Object is an unordered collection of properties. Each property consists of a name, a value and a set of attributes.

您不能假设给定像{"idfruits":"1","fruit":"Apple"}这样的哈希，id将是第一个，水果将是第二个.您需要按名称称呼他们.

You cannot assume that given a hash like {"idfruits":"1","fruit":"Apple"}, the id will be first and the fruit will be second. You will need to call them by name.

顺便问一下，很好的问题.

Very good question, by the way.

要做你想做的事:

<script type="text/javascript">
$(function () {
    jQuery.ajax({
        url: "index.php",
        type: "POST",
        dataype: "json",
        async: false,
        success: function (data) {
            console.log(data);
            var items = [];
            $.each(data, function (key, fruit_info) {
                items.push('<li id="fruit_' + fruit_info.idfruits + '">' + fruit_info.fruit + '</li>');
            });

            $(items.join('')).appendTo('#listy');
        }
    });
});
</script>