Question

a在json中有一组数组如下：

[{"id":"0","NameInData":"","name":"","type":"mf","greeting":"Bonjour","message":"GENERIC: Lorem ipsum."},
{"id":"1","NameInData":"alexis","name":"Alexis","type":"mf","greeting":"Bonjour Alexis","message":"ONE: Lorem ipsum."},
{"id":"2","NameInData":"laurence","name":"Laurence","type":"ff","greeting":"Hello Laurence","message":"TWO: Lorem ipsum."},
{"id":"3","NameInData":"francois","name":"Francois","type":"mm","greeting":"Konnichiwa Francois","message":"THREE: Lorem ipsum."},
{"id":"4","NameInData":"dirk","name":"Dirk","type":"mf","greeting":"Ni hao Dirk","message":"FOUR: Lorem ipsum."},
{"id":"5","NameInData":"coline","name":"Coline","type":"ff","greeting":"high 5! Coline","message":"FIVE: Lorem ipsum."}]}

我能够从这个数组中识别一个键的值，并使用以下代码识别//do something：

function getID(name){

    $.each(data,function(key,value){    //value = object.value (name)

        $.each(value,function(key1,value1){     //value1 = user name (actual names in array)

            // name is identified   
            if(value1 == content){    //content is the "name" user entered
                console.log(value.id);

                var name = value.name;                  
                $('#nameText').text(name);
                console.log("Name: " + name);

                var greeting = value.greeting;
                $('#greetingText').text(greeting);
                console.log("Greeting: " + greeting);

                return;

            }                   
        });

    });

                // name is unidentified, new user
                var name = content;     //content is the "name" user entered            
                $('#nameText').text(name);
                console.log("Name: " + name);               

                var greeting = data[0].greeting;
                $('#greetingText').text(greeting);
                console.log("Greeting: " + greeting);

                console.log('0');
                return;

}

getID(data);
return false;

如果名称未在列表中使用以下代码未识别，我正在尝试//do other things。但是，由于我的数组有6个项目，输出将重复整个过程6次，打印0我只想要一个输出，一个结果（或者，一个名称及其ID已被识别并打印出什么它与OR有关，名称未被识别，id将被设置为0并打印它的相关内容。）

您可以在 here 链接中找到我的完整代码。如果有人能告诉我我的语法哪部分是错的，那将是非常好的吗？

来自答案的更新代码HERE

Answer 1

您可以使用Array.filter()创建一个新数组，该数组仅包含原始数组中传递测试的元素。在这种情况下，您的测试是“此项目的名称是否与用户提供的名称相匹配？”：

success: function(data) {
  var data = data || [];
  var results = data.filter(function(element, index, array) {
    if (element.name === $('#nameText').text(name)) {
      return (true);
    }

    return (false);
  });

  if (results[0]) {
    // an element in the array matched what the user entered
    console.log(results[0]);
  }
  else {
    // no name in the array matched $('#nameText').text(name)
    // set id to 0 or whatever
  }
}

这不是完美的代码;除其他外，它假设$.ajax()总是返回一个数组，并且该数组不包含重复的名称。但它应该足以让你开始。

ajax：仅从数组中打印标识的结果

1 个答案: