角度范围和ng-click/ng-show设置多个div [英] Angular scope and ng-click / ng-show to set multiple divs

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本文介绍了角度范围和ng-click/ng-show设置多个div的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！

问题描述

我正在寻找到目前为止我的代码方面的帮助.

I am looking for some help with my code I have so far.

主要目的是能够单击任何加号图标，并将其盖在所有其他div块上.

The main objective is to be able to click on any Plus icon and have it place a cover over all other div blocks.

当单击加号图标时，它还将在右侧显示一个div块.

And when a plus icon is clicked it will also show a div block to the right.

正如您将看到的那样，单击块 2 时，它会完成所有预期的工作.

As you will see when block 2 is clicked it does all that is intended.

我正在寻找一种有效的方法，当单击任何加号图标时，可以使用 Angular 进行此操作.

I am looking for an efficient way to do this with Angular when any plus icon is clicked.

这只是我在这里显示的一个小样本，实际上有10到20个块可以覆盖.

This is just a small sample I show here, in reality there would be 10 to 20 blocks to cover.

如果有人可以在这里看到使用较少代码并更好地利用范围的方法，将不胜感激.

If someone could see a way to use less code here and make better use of the scope, this would be greatly appreciated.

我在>在此处发布 > .

I have looked at many options like in this post here.

尝试过此操作，但它不起作用...

Tried this but it doesn't want to work... 

data-ng-class="{coverThisBlock: value2 == 'off',coverThisBlock: value == 'on'}"

如果我不得不使用这种类型的选项(甚至说10个区块)，那将是一团糟.

If I had to use this type of option with even say 10 blocks, it would be a real mess.

主要问题

是否有更好的Angular方式可以工作...单击任何加号图标时，它会更改范围，然后供ngclass和ng-show使用?

Is there a better Angular way for this to work... when any plus icon is clicked it changes scope to then be used by ngclass and ng-show?

如何正确连接此示例的示波器?

How to correctly wire up scope for this example?

非常感谢.

我已经建立了一个可正常运行的 此处找到 .

I have set up a working FIDDLE HERE.

这里是最终的示例，作者是Avijit Gupta.

HERE IS THE FINAL WORKING EXAMPLE by Avijit Gupta. 

<div class="container" ng-app="plusMinusApp"  ng-controller="plusMinusController">

<div class="row" ng-init="value1 = 'off'">
 <!--<div class="col-xs-4" data-ng-class="{coverThisBlock: value2 == 'off',coverThisBlock: value == 'on'}"> --> 
    <div class="col-sm-4 col-xs-6" data-ng-class="{coverThisBlock: value2 == 'off'}">    
        <div class="divClass" 
        data-ng-click="(selectBlock(1)) ; (status1 = !status1) ; (value1 = { 'on': 'off', 'off':'on'}[value1])" 
        data-ng-class="{'active-selection': status1 == activeClass}">
        1
        </div>
        <i ng-click="(selectBlock(1)) ; (status1 = !status1) ; (value1 = { 'on': 'off', 'off':'on'}[value1])" 
        class="btn btn-primary text-center fa" 
        ng-class="{'fa-minus': status1, 'fa-plus': !status1}"></i>
    </div>
    <div  ng-show="value1 == 'on'" class="col-xs-4 textdiv">Hello</div>
</div>

<div class="row" >
    <div class="col-sm-4 col-xs-6" ng-init="value2 = 'on'">    
        <div class="divClass" 
        data-ng-click="(value2 = { 'on': 'off', 'off':'on'}[value2])" 
        data-ng-class="{'active-selection': value2 == 'off'}">
        2
        </div>
        <i ng-click="(value2 = { 'on': 'off', 'off':'on'}[value2])" 
        class="btn btn-primary text-center fa" 
        ng-class="{'fa-minus': (value2 == 'off'), 'fa-plus': value2}"></i>
    </div>
    <div  ng-show="value2 == 'off'" class="col-xs-3 textdiv">Hello</div>
</div>

<div class="row">  
    <div class="col-sm-4 col-xs-6" data-ng-class="{'coverThisBlock': value2 == 'off'}">    
        <div class="divClass" 
        data-ng-click="(selectBlock(3)) ; (status3 = !status3)" 
        data-ng-class="{'active-selection': !status3 == activeClass}">
        3
        </div>
        <i ng-click="(selectBlock(3)) ; (status3 = !status3)" 
        class="btn btn-primary text-center fa" 
        ng-class="{'fa-minus': status3, 'fa-plus': !status3}"></i>
    </div>
</div>

<div class="row"> 
    <div class="col-sm-4 col-xs-6" data-ng-class="{'coverThisBlock': value2 == 'off'}">    
        <div class="divClass" 
        data-ng-click="(selectBlock(1)) ; (status4 = !status4)" 
        data-ng-class="{'active-selection': status4 == activeClass}">
        4
        </div>
        <i ng-click="(selectBlock(1)) ; (status4 = !status4)" 
        class="btn btn-primary text-center fa" 
        ng-class="{'fa-minus': status4, 'fa-plus': !status4}"></i>
    </div>
    <div  ng-show="status4" class="col-xs-4 textdiv">Hello</div>   
</div>

<div class="row" ng-init="value = 'off'">
    <div class="col-sm-4 col-xs-6" data-ng-class="{'coverThisBlock': value2 == 'off'}">    
        <div class="divClass" 
        data-ng-click="(selectBlock(1)) ; (status = !status) ; (value = { 'on': 'off', 'off':'on'}[value])" 
        data-ng-class="{'active-selection': status == activeClass}">
        5
        </div>
        <i ng-click="(selectBlock(1)) ; (status = !status) ; (value = { 'on': 'off', 'off':'on'}[value])" 
        class="btn btn-primary text-center fa" 
        ng-class="{'fa-minus': status, 'fa-plus': !status}"></i>
    </div>
    <div  ng-show="value == 'on'" class="col-xs-4 textdiv">Hello</div>
</div>
</div>

<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.4.8/angular.min.js"></script>
<script src="js/plusMinusApp.j"></script>
<script>

var myModule = angular.module('plusMinusApp', []);
myModule.controller('plusMinusController', function ($scope) {

    $scope.status  = false;    
    $scope.status1 = false;
    $scope.status2 = false;
    $scope.status3 = false;
    $scope.status4 = false;    

$scope.blocks = [{
    id: '1',
    block: "1",
  }, {
    id: '2',
    block: "2",
  }, {
    id: '3',
    block: "3",
  }, {
    id: '4',
    block: "4",
  }, {
    id: '5',
    block: "5"
  }];
 // $scope.activeClass = 0;  
  $scope.selectBlock = function(id) {
    $scope.activeClass = id;
    console.log(id);
  };  
});    
</script>

回答有关NG-REPEAT的问题

ng-repeat可以为每个不同的div使用多个CSS类

显然可以.

像这样使用范围 id ...

By using the scope id like this... 

<div class="block-{{block.id}}">

和这样的CSS ...

and the css like this... 

.block-1 {...

在此工作的人

WORKING FIDDLE OF THIS HERE

推荐答案

编辑(基于提问者的评论):

更新字段

  1. 一次只能单击一个?或者，如果另一个打开/单击，则第一个打开的将重置并关闭

这将您的代码简化了近两倍.

This simplifies your code by almost 2x.

初始状态:

  • 没有选择任何块.
  • 没有一个方块被覆盖.

代码:

$scope.setToInitialState = function() {
  $scope.blocks.forEach(function(block) {
    $scope.isSelected[block.id] = false;
    $scope.isCovered[block.id] =  false;
  });
};

触摸状态:

  • 切换单击的块的选定状态. (在选择和取消选择之间切换).
  • 如果选中，则覆盖并取消选择所有其他块.
  • 如果取消选择，则使应用程序进入初始状态.

代码:

$scope.selectBlock = function(id) {
  $scope.isSelected[id] = !$scope.isSelected[id];
  $scope.isCovered[id] = false;
  if ($scope.isSelected[id]) {
    $scope.blocks.forEach(function(block) {
      if (block.id !== id) {
        $scope.isCovered[block.id] = true;
        $scope.isSelected[block.id] = false;
      }    
    });
  }
  else {
    $scope.setToInitialState();
  }
};

  1. 该演示使用所有相同的设置块大小，但实际使用的所有div块的高度和宽度均不同.每个区块都是不同的图片

您应该考虑使用 ng-src .

You should consider using ng-src.

我假设您可能正在从数据库中检索所有这些内容.然后，如果可能，您可以将每个图像放置在固定大小的div内，以使它们的大小都相同.

I am assuming that you might be retreiving all this content from the DB. Then, if possible, you may place each of your image inside a div of fixed size, so that they all come out to be of the same size.

  1. 此外，显示屏还分为2个垂直半屏部分

可以通过调整一点CSS来正确设置.

That can be set right tweaking a little bit of css.

原始答案:

工作场所

假设您的应用有2种状态:

Let's say your app has 2 states:

  1. 初始状态(未更改)
  2. 触摸状态

最初，您处于初始状态:

Initially, you are in the Initial state:

  • 没有显示正确的div.
  • 所有图标均为加号"(无减号")
  • 没有一个方块被覆盖.

代码:

$scope.setToInitialState = function() {
  $scope.plusCount = 0;
  $scope.blocks.forEach(function(block) {
    $scope.isPlus[block.id] = true;
    $scope.isShowDiv[block.id] = false;
    $scope.isCoverBlock[block.id] = false;
    $scope.plusCount += 1;
  });
};

处于触摸"状态时:

  • 所有这些块均已覆盖，并带有加号"图标.
  • 仅显示那些块的右div，这些未覆盖.

代码:

// Run when user clicks on the 'plus' or 'minus' icon.
$scope.selectBlock = function(id) {
  $scope.isPlus[id] = !$scope.isPlus[id]; // toggle between 'plus' and 'minus' icons
  if ($scope.isPlus[id]) {
    $scope.plusCount += 1;
  }
  else {
    $scope.plusCount -= 1;
  }
  $scope.blocks.forEach(function(block) {

    if ($scope.isPlus[block.id]) {
      $scope.isCoverBlock[block.id] = true;
    }
    else {    
      $scope.isCoverBlock[block.id] = false;
    }
    $scope.isShowDiv[block.id] = !$scope.isCoverBlock[block.id];

  });
};

因此，基本上，当用户与视图交互并实际单击图标时，他/她将转到touched state(运行上面的代码).

So, basically when the user interacts with the view and actually clicks on the icon, then he/she goes to the touched state (the above code is run).

仅当所有图标均为加号"时，才必须将用户发送到initial state:

Only when all the icons are 'plus', then the user must be sent to the initial state:

if ($scope.plusCount === $scope.blocks.length) {
  $scope.setToInitialState();
}

HTML中的更改:

  1. 将ng-init="setToInitialState()"添加到最外面的div，以便我们最初处于初始状态.
  1. Add ng-init="setToInitialState()" to the outermost div, so that we are in the initial state initially.

代码:

<div class="container" ng-app="plusMinusApp"  ng-controller="plusMinusController" ng-init="setToInitialState()">

  1. 对于每个块，请使用 ng-repeat 而不是粘贴代码:

代码:

<div class="row" ng-repeat="block in blocks">
    <div class="col-sm-4 col-xs-6" data-ng-class="{ 'coverThisBlock': isCoverBlock[block.id]}">    
        <div class="divClass" 
        data-ng-class="{'active-selection': !isPlus[block.id]}">
        {{block.id}}
        </div>
        <i data-ng-click="selectBlock(block.id)" 
        class="btn btn-primary text-center fa" 
        data-ng-class="{'fa-minus': !isPlus[block.id], 'fa-plus': isPlus[block.id]}"></i>
    </div>
    <div data-ng-show="isShowDiv[block.id]" class="col-xs-3 textdiv">Hello</div>
</div>

希望它对您有帮助！

这篇关于角度范围和ng-click/ng-show设置多个div的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！

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