如何在Javascript中解析Json结果

How to Parse Json Result in Javascript

本文关键字：Json 结果 Javascript      更新时间：2023-11-17

我有json结果我有代码，但它只适用于唯一的键在我的数据中，每个值都有不同的键
请帮我

{
    "images": [
    {
        "time": 2.86091,
        "transaction":
        {
            "status": "Complete",
            "subject": "test2",
            "confidence": 0.77,
            "gallery_name": "gallerytest1",
        },
        "candidates": [
        {
          "subtest1": "0.802138030529022",
          "enrollment_timestamp": "1416850761"
        },
        {
          "elizabeth": "0.802138030529022",
          "enrollment_timestamp": "1417207485"
        },
        {
          "elizabeth": "0.777253568172455",
          "enrollment_timestamp": "1416518415"
        },
        {
          "elizabeth": "0.777253568172455",
          "enrollment_timestamp": "1416431816"
        }
        ]
    } ]
}

我想从中解析所有catidate及其值伊丽莎白=0.77777subtest1=0.802138030529022

JSON已经被"解析"为Javascript，因为JSON意味着Javascript对象符号。如果你的问题是你不知道如何循环通过JSON对象的候选对象，下面是你的方法：

var candidates = jsonObject.images[0].candidates
for (var key in candidates) {
        alert(jsonObject[key]);
}

只需简单地将jsonObject引用到变量var jsonData，然后使用简单循环根据json结构遍历复杂的jsonObject

var jsonData = {.....}  // Your JSON Object that you added in your Question.

这里jsonData包含复杂的jsonObject现在通过json元素进行迭代。

for(i=0; i < jsonData.images.length; i++){ //iterate throughout the Images Node Array.
    var candidates = obj.images[i].candidates; //Get the Candidate Node of each Image.
    for(j=0; j < candidates.length; j++){ //iterate throughout the Candidates Node Array.
       console.log(candidates[j]); // get the each Candidate to print on Console log of Web Browser.
  }

json字符串中有错误，请检查此行："gallery_name": "gallerytest1",字符CCD_ 8是问题所在。

解析的代码示例：

var data = JSON.parse(jsonString);
alert(data["images"][0]["candidates"][0]["subtest1"]);

更新：

下面是一个如何使用dinamic属性的示例。

    var jsonData = JSON.parse(jsonString);
        for(i=0; i < jsonData["images"].length; i++) { // foreach image
            var candidates = jsonData["images"][i]["candidates"]; // array of candidates
            for (j = 0; j < candidates.length; j++) { // foreach candidate
                var candidate = candidates[j]; // single candidate
                for (var key in candidate){ // foreach candidate property
                    // this if condition is required when working with for loop on this way.
                    // for more visit http://stackoverflow.com/questions/9329446/for-each-over-an-array-in-javascript
                    if (typeof candidate[key] === 'function') {
                       continue;
                    }
                    alert("Key: " + key + "'nValue: " + candidate[key]);
                }
            }
        }
相关文章：