javascript - 如何从json键值中删除下划线

Question

我有一个像这样的 json 文件

{
"Asian_Cities_Countries":[
{"name":"Beijing",
"country":"China"
},
{"name":"Ankara",
"country":"Turkey"
}
],
"European_Cities_Countries":[
{"name":"Paris",
"country":"France"
},
{"name":"Madrid",
"country":"Spain"
}
]
}

它只是一个 json 文件的一部分，实际的 json 相当大。我正在通过 angularjs 获取这个 json 并将其显示为我的 html 页面

    <div class="panel-group" id="accordion">
            <div ng-repeat="key in notSorted(items) track by $index" class="panel panel-default menu-panel" ng-init="value = items[key]" style="margin-bottom:10px;">
            <a data-toggle="collapse" data-parent="#accordion" id="menu-link" href="#{{key}}">
                <div class="panel-heading panel-types">
                    <h4 class="panel-title">
                    {{key}}
  </h4>
                </div></a>
                <div id="{{key}}" class="panel-collapse collapsing menu-items">
                    <div ng-repeat="item in value">
                        <div class="row">
                            <div class="col-sm-12 col-lg-3">
                                <p class="item-name">
                                {{item.name}}
                                </p>
                            </div>
                            <div class="col-sm-12 col-lg-3">
                                <p>{{item.country}}</p>
                            </div>
                        </div>
                    </div>
                </div>
            </div>
        </div>

现在我想从键值中删除下划线并将其替换为空格。我该怎么做。

我试过 {{key.replace('_',' ')}} 。但它只删除第一个下划线，而不是全部。

Answer 1

var app = angular.module("app",[]);

app.controller("ctrl" , function($scope){
  $scope.items = {
     "Asian_Cities_Countries":
           [
             {"name":"Beijing","country":"China"},
             {"name":"Ankara","country":"Turkey"}
           ],
      "European_Cities_Countries":
          [
             {"name":"Paris","country":"France"},
             {"name":"Madrid","country":"Spain"}
          ]
 };
  
  });

app.filter('removeUnderscores', [function() {
return function(string) {
    if (!angular.isString(string)) {
        return string;
    }
    return string.replace(/[/_/]/g, ' ');
 };
}])

<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script>
<div ng-app="app" ng-controller="ctrl" class="panel-group" id="accordion">
            <div ng-repeat="(key,value) in items track by $index" class="panel panel-default menu-panel" ng-init="value = items[key]" style="margin-bottom:10px;">
            <a data-toggle="collapse" data-parent="#accordion" id="menu-link" href="#{{key}}">
                <div class="panel-heading panel-types">
                    <h4 class="panel-title">
                    {{key | removeUnderscores}}
  </h4>
                </div></a>
                <div id="{{key}}" class="panel-collapse collapsing menu-items">
                    <div ng-repeat="item in value">
                        <div class="row">
                            <div class="col-sm-12 col-lg-3">
                                <p class="item-name">
                                {{item.name}}
                                </p>
                            </div>
                            <div class="col-sm-12 col-lg-3">
                                <p>{{item.country}}</p>
                            </div>
                        </div>
                    </div>
                </div>
            </div>
        </div>

试试这个。使用类似这样的过滤器

 app.filter('removeUnderscores', [function() {
return function(string) {
    if (!angular.isString(string)) {
        return string;
    }
    return string.replace(/[/_/]/g, ' ');
 };
}])

在 html 中

   {{key | removeUnderscores}}