Question

我是Angular的新手，我想使用jQuery插件（d3pie.js）。我搜索了我的需求，我发现很少的例子可以解释我必须创建一个指令并输入我的参数（并且真诚地对我这样的初学者来说有点混乱）。

我的问题是我没有找到如何使用需要对象作为参数的插件，知道这个对象在另一个控制器中？

Answer 1

下面是一个使用条形图的示例，一个用于控制数据的控制器和一个使用D3的指令。这都是使用此链接找到的，但我稍微修改了它以获得更好的角度代码样式。 http://odiseo.net/angularjs/proper-use-of-d3-js-with-angular-directives

所有D3逻辑和演示文稿必须包含在指令
使用HTML声明性语法将数据提供给指令实例
通过这样做，您可以将数据存储在控制器中，通过参数的双向数据绑定将其传递给D3指令

＆＃13;

angular.module('myApp', [])
  .controller('BarsController', function($scope) {
    $scope.myData = [10,20,30,40,60, 80, 20, 50];
  })
  //camel cased directive name
  //in your HTML, this will be named as bars-chart
  .directive('barsChart', function ($parse) {
    //explicitly creating a directive definition variable
    //this may look verbose but is good for clarification purposes
    //in real life you'd want to simply return the object {...}
    var directiveDefinitionObject = {
      //We restrict its use to an element
      //as usually  <bars-chart> is semantically
      //more understandable
      restrict: 'E',
      //this is important,
      //we don't want to overwrite our directive declaration
      //in the HTML mark-up
      replace: false,
      //our data source would be an array
      //passed thru chart-data attribute
      scope: {data: '=chartData'},
      link: function (scope, element, attrs) {
        //in D3, any selection[0] contains the group
        //selection[0][0] is the DOM node
        //but we won't need that this time
        var chart = d3.select(element[0]);
        //to our original directive markup bars-chart
        //we add a div with out chart stling and bind each
        //data entry to the chart
        chart.append("div").attr("class", "chart")
          .selectAll('div')
          .data(scope.data).enter().append("div")
          .transition().ease("elastic")
          .style("width", function(d) { return d + "%"; })
          .text(function(d) { return d + "%"; });
        //a little of magic: setting it's width based
        //on the data value (d)
        //and text all with a smooth transition
      }
    };
    return directiveDefinitionObject;
  });

＆＃13;

.chart {
    background: #eee;
    padding: 3px;
}

.chart div {
  width: 0;
  transition: all 1s ease-out;
  -moz-transition: all 1s ease-out;
  -webkit-transition: all 1s ease-out;
}

.chart div {
  font: 10px sans-serif;
  background-color: steelblue;
  text-align: right;
  padding: 3px;
  margin: 5px;
  color: white;
  box-shadow: 2px 2px 2px #666;
}

＆＃13;

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<script src="http://d3js.org/d3.v3.min.js" charset="utf-8"></script>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script>

<div ng-app="myApp" ng-controller="BarsController">
    <bars-chart chart-data="myData"  ></bars-chart>
</div>

＆＃13;

Angular使用jQuery插件与外部控制器中的对象

1 个答案: