JSFiddle - React, Tailwind, and code Playground

by dshilkret

HTML

<input type="button" id="button" value="Get" />
<input type="button" id="clear" value="Clear" />
<div id="response">
</div><br>
<div id="response2">

</div>

JavaScript

var json1 = [{id:1,name:'aaa'},{id:5,name:'ccc'},{id:3,name:'bbb'}];

var json2 = [{id:3,parameter1:'x', parameter2:'y', parameter3:'z'},
 {id:1,parameter1:'u', parameter2:'v', parameter3:'w'},
 {id:5,parameter1:'q', parameter2:'w', parameter3:'e'}
];

function joinObjects() {
  var idMap = {};
  // Iterate over arguments
  for(var i = 0; i < arguments.length; i++) { 
    // Iterate over individual argument arrays (aka json1, json2)
    for(var j = 0; j < arguments[i].length; j++) {
       var currentID = arguments[i][j]['id'];
       if(!idMap[currentID]) {
          idMap[currentID] = {};
        }
       // Iterate over properties of objects in arrays (aka id, name, etc.)
      for(key in arguments[i][j]) {
          idMap[currentID][key] = arguments[i][j][key];
      }
    }
  }

  // push properties of idMap into an array
  var newArray = [];
  for(property in idMap) {
    newArray.push(idMap[property]);
  }
  return newArray;
}

var json3 = joinObjects(json1, json2);