如何使用Javascript警报显示特定的JSON数据？

Question

这是我的JSON数据：

{
  "status": "Succeeded",
  "recognitionResult": {
    "lines": [
      {
        "boundingBox": [
          2,
          52,
          65,
          46,
          69,
          89,
          7,
          95
        ],
        "text": "The quick brown fox jumps over the lazy",
        }
    ]
}

我想从这个JSON数据中提取文本。我该怎么做？

Answer 1

您可以尝试以下方式：

var myJSON = {
  "status": "Succeeded",
  "recognitionResult": {
    "lines": [
      {
        "boundingBox": [
          2,
          52,
          65,
          46,
          69,
          89,
          7,
          95
        ],
        "text": "The quick brown fox jumps over the lazy",
        }
  ]
}
}

var text = myJSON.recognitionResult.lines[0].text;
console.log(text)

Answer 2

var status = myJSON.status;
alert( status );

var text = myJSON.recognitionResult.lines[0].text;
alert( text );

Answer 3

让代码考虑动态行为总是更好。如果您的lines数组有多个对象怎么办？因此，我建议在这种情况下使用循环，尽管甚至有一个对象。

＆＃13;

＆＃13;

var jsonData = {
  "status": "Succeeded",
  "recognitionResult": {
    "lines": [
      {
        "boundingBox": [
          2,
          52,
          65,
          46,
          69,
          89,
          7,
          95
        ],
        "text": "The quick brown fox jumps over the lazy"
      },
       {
        "boundingBox": [
          2,
          52,
          65,
          95
        ],
        "text": "fox jumps over the lazy"
      }
    ]
  }
};
jsonData.recognitionResult.lines.forEach(function(line){
  console.log(line.text);
});

＆＃13;

＆＃13;

＆＃13;