Question

我试图将一个对象添加到另一个对象。

我们说我有两个对象。 selectedItemObj和selectedItemQueue。我想将selectedItemObj添加到selecteditemQueue，但只有selectedItemObject与selectedItemQueue

中的任何对象都不匹配

我们在这里说我有这个对象：

var selecteditemObj = [
   {
      "market_hash_name":"Chroma 2 Case Key 1",
      "assetid":"92700754417_143965972",
      "amount":1,
      "image":"https://steamcommunity-a.akamaihd.net/economy/image/-9a81dlWLwJ2UUGcVs_nsVtzdOEdtWwKGZZLQHTxDZ7I56KU0Zwwo4NUX4oFJZEHLbXX7gNTPcUxuxpJSXPbQv2S1MDeXkh6LBBOie3rKFRh16PKd2pDvozixtSOwaP2ar7SlzIA6sEo2rHCpdyhjAGxr0A6MHezetG0RZXdTA/"
   }];



var selectedItemQueue = [
   {
      "market_hash_name":"Chroma 2 Case Key 2",
      "assetid":"92700754667_143865972",
      "amount":1,
      "image":"https://steamcommunity-a.akamaihd.net/economy/image/-9a81dlWLwJ2UUGcVs_nsVtzdOEdtWwKGZZLQHTxDZ7I56KU0Zwwo4NUX4oFJZEHLbXX7gNTPcUxuxpJSXPbQv2S1MDeXkh6LBBOie3rKFRh16PKd2pDvozixtSOwaP2ar7SlzIA6sEo2rHCpdyhjAGxr0A6MHezetG0RZXdTA/"
   },
   {
      "market_hash_name":"Shadow Case Key 3",
      "assetid":"1293611210722_143865972",
      "amount":1,
      "image":"https://steamcommunity-a.akamaihd.net/economy/image/-9a81dlWLwJ2UUGcVs_nsVtzdOEdtWwKGZZLQHTxDZ7I56KU0Zwwo4NUX4oFJZEHLbXX7gNTPcUxuxpJSXPbQv2S1MDeXkh6LBBOiePrKF4wi6aaIGwStN_jl4bSzvXwMO6AwDlSvsYoiOiZ8dij3QbtqkU9ZnezetFWWxusZg/"
   },
   {
      "market_hash_name":"Shadow Case Key 4",
      "assetid":"123393510722_143861972",
      "amount":1,
      "image":"https://steamcommunity-a.akamaihd.net/economy/image/-9a81dlWLwJ2UUGcVs_nsVtzdOEdtWwKGZZLQHTxDZ7I56KU0Zwwo4NUX4oFJZEHLbXX7gNTPcUxuxpJSXPbQv2S1MDeXkh6LBBOiePrKF4wi6aaIGwStN_jl4bSzvXwMO6AwDlSvsYoiOiZ8dij3QbtqkU9ZnezetFWWxusZg/"
   }
];

这是我的尝试，它会添加到队列中，但它不会检查子对象是否存在。我该如何添加？

function addItemToSelectedQueue(assetId){
    var itemObj = findItemById(assetId);
    var queueHasItem = false;
    for (var i = selectedItemQueue.length - 1; i >= 0; i--) {
        if (selectedItemQueue[i] === itemObj) {
            queueHasItem == true;
        };
    };
    if (queueHasItem == false) {
        selectedItemQueue.push(itemObj);
        updateSelecteditems();
    };
}

Answer 1

这样的事情@JsBIN怎么样？我假设market_hash_name用于区分每个对象。

var selecteditemObj = [
   {
      "market_hash_name":"Chroma 2 Case Key 1",
   }
];

var selectedItemQueue = [
   {
      "market_hash_name":"Chroma 2 Case Key 2",
   },
  {
      "market_hash_name":"Chroma 2 Case Key 3",
   }
];

function addItemObjIfNotExist(obj1, obj2, id) {
  for(var i = 0, len = obj2.length; i < len; i++) {
    if(obj1[1][id] !== obj2[i][id]) {
      obj2.push(obj1);
    }
  }
  return obj2;
}

console.log(addItemObjIfNotExist(selectedItemQueue,selecteditemObj, 'market_hash_name'));

Output：

[[object Object] {
  market_hash_name: "Chroma 2 Case Key 1"
}, [[object Object] {
  market_hash_name: "Chroma 2 Case Key 2"
}, [object Object] {
  market_hash_name: "Chroma 2 Case Key 3"
}]]

Answer 2

我会这样做：

function addItemToSelectedQueue(fromobj, toobj){
    var found = false;
    for(var x=0; x<toobj.length; x++){
      if(toobj[x].market_hash_name == fromobj[0].market_hash_name){
        found = true;
      }
    }

    if(found == false){
      toobj.push(fromobj[0]);
    }
}

用法：

addItemToSelectedQueue(selecteditemObj, selectedItemQueue);

对我来说效果很好！

检查是否存在子对象，如果存在，则添加到对象

2 个答案: