选择单选按钮后调用JSON

时间:2015-05-20 16:24:49

标签: javascript jquery html ajax json

编辑:

包含名为services.json的Json文件:

{
"0": "Dog",
"1": "Cat",
"2": "Pony"
}

HTML:

   <form class="form-horizontal">
                    <div class="form-group" id="radiobuttongroup">
                        <label for="inputservice" class="col-sm-2 control-label">Service</label>
                            <div class="radio">
                                <label>
                                <input type="radio" class="buttondog" name="optionsRadios" id="optionsRadios1" value="Dog">
                                Dog</label>
                            </div>
                        <label for="inputservice" class="col-sm-2 control-label">&nbsp</label>
                            <div class="radio">
                                <label>
                                <input type="radio" class="buttoncat" name="optionsRadios" id="optionsRadios2" value="Cat">
                                Cat</label>
                            </div>
                        <label for="inputservice" class="col-sm-2 control-label">&nbsp</label>
                            <div class="radio">
                                <label>
                                <input type="radio" class="buttonpony" name="optionsRadios" id="optionsRadios3" value="Pony">
                                Pony</label>
                            </div>
                        </div>
                    <span id="displayresults"></span>

Jquery我正在尝试:

    <script type="text/javascript">
$(document).ready(function() {
     $('.buttondog').click(function(){
        $.ajax({
            url: "services.json",
            dataType: "text",
            success: function(data){
                var json = $.parseJSON(data);
                     $('#displayresults').html(json.dog);
                }
            });
        });
    });
</script>

我尝试了下面的代码但由于某种原因它不会起作用。这似乎削减了很多不相关的剧本,但即使这样也无法奏效。我当时打算使用这种方法为每个按钮创建一个脚本。 我想要的是,一旦选择了狗单选按钮,当猫,1和小马2时,0将显示在跨度中。

我做错了什么?

由于

2 个答案:

答案 0 :(得分:2)

我知道这个话题可能已经死了,但我认为你的问题已经存在 这一行var json = $.parseJSON(data); $('#displayresults').html(json.dog); 您的对象没有属性“dog”,因此您必须将其称为json[1]json['1']

答案 1 :(得分:0)

您可以使用jQuery绑定到无线电点击事件,然后匹配标签中的值(或将无线电value更改为返回值 - 即'Dog','Fish','Rabbit')和然后用它来得到你的“结果”。

示例:

var data = {
  "result1": "Dog",
  "result2": "Fish",
  "result3": "Rabbit"
};

$('input[name="optionsRadios"]').click(function(){
    
    var radioVal = $(this).val(); // <-- if you change input val
    var labelVal = $(this).next('label').html(); //<-- get the label HTML
    
    // get the correct item from the data object
    $.each(data, function(k,v){
    
        if(v === labelVal){
        
          // added to results div
          $('#displaydata').html(k + " " + v);
          
        }
      
    });
  
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div class="form-group" id="radiobuttongroup">
  <label for="inputservice" class="col-sm-2 control-label">Service</label>
  <div class="radio">
    <label>
      <input type="radio" name="optionsRadios" id="optionsRadios1" value="Dog"> <!-- <-- Changed value -->
      <label>Dog</label>
  </div>
  <label for="inputservice" class="col-sm-2 control-label">&nbsp</label>
  <div class="radio">
    <label>
      <input type="radio" name="optionsRadios" id="optionsRadios2" value="Fish">
      <label>Fish</label>
  </div>
  <label for="inputservice" class="col-sm-2 control-label">&nbsp</label>
  <div class="radio">
    <label>
      <input type="radio" name="optionsRadios" id="optionsRadios3" value="Rabit">
      <label>Rabbit</label>
  </div>
</div>
<div id="displaydata"></div>

[编辑 - 有关JQuery的信息.ajax()]

在您的评论中,您使用jQuery的.getJSON()函数。 Per the documentation这只是简写等同于:

// example:
$.ajax({
  dataType: "json",
  url: url,
  data: data,
  success: success
});

......其中:

  

发送到服务器的数据[data]作为查询附加到URL   串。如果data参数的值是普通对象,则为   转换为字符串并进行url编码后再将其附加到   URL。

请查看.getJSON()文档[上面链接]和.ajax() documentation

下面是一些伪代码,它们有效地描述了如何处理获取ajax结果并使用jquery显示它:

[注意 - 如果您还有针对ajax的其他问题或需要帮助排查您的请求,请将该主题作为新问题打开并提供您尝试过的示例]

// psuedo code for ajax request

// setup:
// global variable for results object so it can be used by other functions
// inentionally left as 'undefined' for debugging:

var results;

// radio click event:
$('input[name="optionsRadios"]').click(function() {
  
  var radioVal = $(this).val();
  
  //see helper function below
  // adds response objec to 'results` variable
  getObject(radioVal);
  
  
  $('#displaydata').html(results);
  
});


// seperate function for ajax call
function getObject(id) {
  
  var reqData = { "id" : id };
  
  // fake ajax:
  $.ajax({
    dataType: "json",
    url: "/objContoller/",
    data: reqData,
    success: function(data){
      // here's where you handle success!
      // data can be accessed exactly how it was in the previous example
      // you can parse it and...
      // global variable assignment:
      
      results = JSON.parse(data);
      
      // or just return the json
      // results = data;
      
    },
    error: function(response){
      // always handle the error..
      // how you deal with this is based on server side code
      alert("this is just an example, so it will always throw this error!!! ID: " + id + " || reqData: " + JSON.stringify(reqData));
    }
  });

}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div class="form-group" id="radiobuttongroup">
  <label for="inputservice" class="col-sm-2 control-label">Service</label>
  <div class="radio">
    <input type="radio" name="optionsRadios" id="optionsRadios1" value="Dog">
    <label>Dog</label>
  </div>
  <label for="inputservice" class="col-sm-2 control-label">&nbsp</label>
  <div class="radio">
    <input type="radio" name="optionsRadios" id="optionsRadios2" value="Fish">
    <label>Fish</label>
  </div>
  <label for="inputservice" class="col-sm-2 control-label">&nbsp</label>
  <div class="radio">
    <input type="radio" name="optionsRadios" id="optionsRadios3" value="Rabbit">
    <label>Rabbit</label>
  </div>
</div>
<div id="displaydata"></div>