Question

我有办法阅读或获取密钥名称（如果我的用语是正确的）在这种情况下，我指的是“homedata”或“faq”。我想知道是否是“homedata或”faq“，以便我可以将它存储在变量中并用于比较。对于我的jquery，这是我的脚本：

var varHolder ="";  
$.ajax({
type: "POST",
//data: data_json,
dataType: "json",
url: "sql_queries.php",
success: function(data) {
$.each(data, function(key, val) {

            //read the index name here and store it to varholder
            varHolder = data[key];

            //then compare it like this
            if(varHolder == "homedata"){
                //write something to the dome
            }else if(varHolder == "faq"){
                //write something to the dome
            }
        });

    },
    error:function(){
           console.log("error fetching data. please refresh the page");//alert("Send Email Failure,Please try again");
    },
    complete:function(){
        console.log("complete");//alert("Send Email Failure,Please try again");
    }
});

这是我的json结果：

[
{
"homedata":
    {
    "approve_title":"home bla blah",
    "approve_desc":"this is the approve JSON"
    }
},
{
"homedata":
    {
    "approve_title":"another home bla blah",
    "approve_desc":"tthis is the approve JSON",
    "approve_path":"backend/pdf/this is the approve JSON.pdf"
    }
},
{
"faq":
    {
    "progproj_title":"whatever JSON",
    "progproj_details":"sos sos sos"
    }
}

]

Answer 1

您可以使用点符号如果您的json响应看起来像

data = [{ key : value }, { key2 : value2} ]

您可以在键下获取值

var value = data[0].key;
var value2 = data[1].key;

修改

好的，我做了一个粗略的fiddle here它将遍历你的json响应，并将“homedata”或“faq”键的名称写入div。请注意，它将每次覆盖，因此json数组中的最后一个键将显示在最后。这只是为了说明如何获得关键名称。希望这有助于

Answer 2

“的console.log（数据）;” //这已经保留了索引的名称所以你可以这样做 elementIndexName =''+ data; 要么 “ $ .each（data，function（key，val）{

        //read the index name here and store it to varholder
        varHolder = ""+data;

        //then compare it like this
        if(varHolder == "homedata"){
            //write something to the dome
        }else if(varHolder == "faq"){
            //write something to the dome
        }
    });

},

“

如何在JQuery中读取json密钥名称

2 个答案: