Alternatively or objects inside the array variable name and a value corresponding to

// Replace or an array of objects inside the corresponding variable names and values 
    // define a variable 
    var jsonObj;
     // variables which we desired object or array 
    jsonObj = {code: "200" , name: "300", sex : "400" };
     // define a new variable so that he is equal to the object you want to change the value of 
    the let codeVal = jsonObj.code;
     // then remove unneeded or unwanted objects 
    the delete jsonObj.code;
     // new definition of a Object property equal to the value you want 
    jsonObj.supCode = codeVal;