Question

我有这个数组：

sudo xcode-select -s /Applications/Xcode.app

我正在尝试使用lodash删除var myArray = [{state: {name: 'object #1'}}, {state: {name: 'object #2'}}, {state: {name: 'object #3'}}]; 'object＃1'的对象。目前我这样做：

state.name

但它不起作用。最初我尝试过这样，对我来说这是更明显的做法：

_.remove(myArray, {
        name: 'object #1'
    });

但它也没有用，我的JS验证器抱怨那里的点符号。

你如何在lodash中这样做？

Answer 1

File file = new Java.IO.File("/sdcard/Movies/videoFile.mp4"); videoPanel.setVideoPath(file.getAbsolutePath());采用谓词函数。你可以这样做：

_.remove

Answer 2

在纯粹的js中，使用Array#filter。

＆＃13;

var myArray = [{state: {name: 'object #1'}},
               {state: {name: 'object #2'}},
               {state: {name: 'object #3'}}];

    myArray = myArray.filter(v => v.state.name != 'object #1');
    console.log(myArray);

＆＃13;

或使用Array#forEach。

＆＃13;

var myArray = [{state: {name: 'object #1'}},
               {state: {name: 'object #2'}},
               {state: {name: 'object #3'}}],
    newArr = [];
    myArray.forEach(v => v.state.name !== 'object #1' ? newArr.push(v) : null);
    console.log(newArr);

＆＃13;

Answer 3

如果要求从现有数组中删除元素，您可以使用Array.prototype.splice()，Array.prototype.findIndex()

＆＃13;

var myArray = [{state: {name: 'object #1'}},
               {state: {name: 'object #2'}},
               {state: {name: 'object #3'}}];

myArray.splice(myArray.findIndex(({state:{name}}) => name === "object #1"), 1);

console.log(myArray);

＆＃13;

Answer 4

您可以使用lodash reject和matchesProperty简写。

var result = _.reject(myArray, ['state.name', 'object #1']);

var myArray = [{
    state: {
      name: 'object #1'
    }
  },
  {
    state: {
      name: 'object #2'
    }
  },
  {
    state: {
      name: 'object #3'
    }
  }
];

var result = _.reject(myArray, ['state.name', 'object #1']);

console.log(result);

body > div { min-height: 100%; top: 0; }

<script src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.4/lodash.js"></script>

Answer 5

你可以使用_.remove这样的回调：

_.remove(myArray, function(o) {
    return o.name === 'object #1';
});

或短暂使用箭头功能，如下所示：

_.remove(myArray, o => o.name === 'object #1');

Answer 6

为什么要使用lodash，当你可以在计划JS中做到这一点？

await client.execute(function() {
            WebForm_DoPostBackWithOptions(new WebForm_PostBackOptions('ctl00$ContentPlaceHolder1$ucNCDList$ucPagination$nextPage', '', true, '', '', false, true));
        });

使用lodash中的嵌套属性从数组中删除对象

6 个答案: