如何从数组中删除对象？

Question

我正在尝试从数组中删除对象，我已经尝试过并且似乎并不正确。 所以有人可以看看我使用的代码

码：

数组内部文件->

[{
  "favouriteLinkContent": "Group",
  "favouriteLinkID": "groupBTNFav"
}, {
  "favouriteLinkContent": "Server",
  "favouriteLinkID": "serverBTNFav"
}, {
  "favouriteLinkContent": "User",
  "favouriteLinkID": "userBTNFav"
}, {
  "favouriteLinkContent": "Sync",
  "favouriteLinkID": "syncBTNFav"
}]

 $(document).on('click', '.removeFavourite', function () { var buttonValue = $(this).closest('a')[0].innerText; // Reading $.ajax( { global: false, type: "POST", cache: false, dataType: "json", data: ( { action: 'read' }), url: 'php/saveFavouriteLinks.php', success: function (data) { $.each(data, function (key, value) { newValue = ' ' + value['favouriteLinkContent']; if (newValue == buttonValue) { console.log(value['favouriteLinkContent']); delete value['favouriteLinkContent']; } //$("#favouritesList").append("<li><a id=" + value['favouriteLinkID'] + "><i class='fa fa-dashboard fa-fw'></i> " + value['favouriteLinkContent'] + "<i class='glyphicon glyphicon-minus pull-right removeFavourite'></i></a></li>"); }); } }); }); 

 <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script> 

我想要发生的事的例子

按钮单击->按钮值是组->从阵列中删除组->

{"favouriteLinkContent":"Group","favouriteLinkID":"groupBTNFav"}

->删除后->

[{
  "favouriteLinkContent": "Server",
  "favouriteLinkID": "serverBTNFav"
}, {
  "favouriteLinkContent": "User",
  "favouriteLinkID": "userBTNFav"
}, {
  "favouriteLinkContent": "Sync",
  "favouriteLinkID": "syncBTNFav"
}]

Answer 1

您可以在数组过滤器中使用辅助函数：

var removeObjectFromArray = function(array, property, objName){          
    return array.filter(function(e){
        return e[property] != objName;
    });
}


 console.log(removeObjectFromArray(array, 'favouriteLinkContent', 'Group'));

的jsfiddle

Answer 2

您可以使用拼接

for(var i=0;i<arr.length;i++){
  if(arr[i].favouriteLinkContent === "Group"){ // <---- if you want to remove Group
    array.splice(i, 1); 
    i--;  // <--- have to do i-- because splice changes the array and array size will be altered
  }
}

您可以将其包装在函数中，然后根据项目从数组中删除元素

removeElement(arr, "Group");

function removeElement(arr, item) {
  for (var i = 0; i < arr.length; i++) {
    if (arr[i].favouriteLinkContent === item) { 
      array.splice(i, 1);
      i--;
    }
  }
}

Answer 3

您可以使用过滤器功能https://developer.mozilla.org/en/docs/Web/JavaScript/Reference/Global_objects/Array/filter

function removeGroup (arr, groupName) {
    return arr.filter(function (el) {return el.favouriteLinkContent !== groupName;});
}

希望能帮上忙，丹