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AngularJS user selector directive example analysis

高洛峰Original: 2016-12-07 15:59:341061browse

This article analyzes the AngularJS user selector directive with examples. Share it with everyone for your reference, the details are as follows:

When developing forms, we often need to use the user selector. User data is generally stored in the following way:

User 1, User 2, User 3

We Selectors can be implemented using angular directives.

<!DOCTYPE html>
<html ng-app="app">
<head>
  <meta charset="UTF-8">
  <meta http-equiv="content-type" content="text/html; charset=utf-8" />
  <script src="../assets/js/angular.min.js"></script>
  <link rel="stylesheet" href="../assets/css/bootstrap.min.css">
  <link rel="stylesheet" href="../assets/css/bootstrap-theme.min.css">
  <link rel="stylesheet" href="../assets/css/component.css">
  <link rel="stylesheet" href="../assets/css/form.css">
  <link rel="stylesheet" href="../assets/css/font-awesome.min.css">
   <script src="../assets/js/angular.min.js"></script>
   <script type="text/javascript">
     var base=angular.module("directive",[]);
     base.directive(&#39;htSelector&#39;, function() {
      return {
        restrict : &#39;AE&#39;,
        templateUrl:&#39;selector.html&#39;,
        scope: {
          name: &#39;=name&#39;
        },
        link: function(scope, element, attrs) {
          var aryName=scope.name.split(",");
          scope.names=aryName;
          scope.remove=function(i){
            aryName.splice(i,1);
          };
          scope.$watch(
              "names",
              function (newValue,oldValue) {
                if(newValue!=oldValue){
                  scope.name=aryName.join(",");
                }
              },true
          );
          scope.selectUser=function(){
            aryName.length = 0;
            aryName.push("韩信");
          }
        }
      }
    });
    var app=angular.module("app",["directive"]);
    app.controller(&#39;ctrl&#39;, [&#39;$scope&#39;,function($scope){
      $scope.names=&#39;自由港,马云,刘强东&#39;;
      $scope.getData=function(){
        console.info($scope.names)
      }
    }])
   </script>
</head>
<body ng-controller="ctrl">
  <div ht-selector name="names"></div>
  <button ng-click="getData()">获取数据</button>
</body>
</html>

Template URL

<div>
  <span ng-repeat="item in names">
       {{item}}<a class="btn btn-xs fa-remove" title="移除该项" ng-click="remove($index)"></a>
  </span>
  <a class="btn btn-sm btn-primary fa-search" ng-click="selectUser()">选择</a>
</div>

In the command, an independent scope is used. The incoming data is a comma-delimited string, and we use an array for operation.

The trick here is to convert between strings and arrays.

A command-independent scope is used here, and watch is used to operate the array. It should be noted that if you monitor the array, you need to use in-depth monitoring.

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