Home / Questions / 94910
Accepted
Norak
Asked: 2020-08-15 07:18:31 +0800 CST 2020-08-15 07:18:31 +0800 CST

How to access elements of a json?

  • 772

After calling a web service, it returns this data to me in json format.

I need to take the numeric value of $value and store it in a variable. I am working with JavaScript. Thank you

Here the json:

 {"return":{"attributes":{"xsi:type":"xsd:int"},"$value":115822961}}
javascript

1 Answers

  1. Best Answer

    If what you get back is a string, you should convert it to an object to be able to access the attribute:

    let objJson = JSON.parse(string)

    Now back to your case, having that structure (I organized it better using JsonLint so that the structure and its levels are more readable):

      {
      "return": {
          "attributes": {
              "xsi:type": "xsd:int"
          },
          "$value": 115822961
      }
  }

    to have the value of $valueyou just have to do

     let value = objJson.return.$value.;

    normally if there are no strange characters you can access the attributes of an object separating by .the identifiers, but for identifiers with a special character you can use ['clave']and you could bring fields with spaces for example having ['mi atributo']said that the following calls are identical:

     objJson.return.$value;
 objJson['return']['$value'];
    • 7