我有外部JSON文件调用数据。这是该 JSON 文件的正文。
[
{"value": "1", "text": "aaa"},
{"value": "2", "text": "bbb"},
{"value": "3", "text": "ccc"},
{"value": "4", "text": "ddd"},
{"value": "5", "text": "eee"},
{"value": "6", "text": "fff"},
{"value": "7", "text": "ggg"},
{"value": "8", "text": "hhh"},
{"value": "9", "text": "iii"},
{"value": "10", "text": "jjj"}
]
我想根据以下数组"b"值过滤此 JSON 文件中的数据。(B0、B1、B3 等(
$scope.array = {"badge":"1,2,5,7","id":"0","b0":"1","b1":"2","b2":"5","b3":"7"}
例:
这个数组有 b0、b1、b2 和 b3,这些值是 1、2、5 和 7。因此,我只想从数据 JSON 文件中获取 1、2、5、7 个值数组并显示该数组的文本值。
可以使用相同的格式更改此数组。因此,我想考虑 b+"数字"参数。
示例 1:
$scope.array = {"badge":"1,2,3,9","id":"0","b0":"1","b1":"2","b2":"3","b3":"9"}
示例 2:
$scope.array = {"badge":"1,2,7","id":"0","b0":"1","b1":"2","b2":"7"}
例3:
$scope.array = {"badge":"1,2,5,7,8,9","id":"0","b0":"1","b1":"2","b2":"5","b3":"7","b4":"8","b5":"9"}
我使用这样的angularjs获得JSON外部文件,
$http.get("/json/datas.json").success(function(data) {
$scope.datas= data;
});
值使用重复显示。
<div ng-repeat="data in datas">
<span ng-bind-html="data.text"></span>
</div>
仅显示 HTML 正文
AAA嘟嘟��EEEGGG
是过滤、映射和/或减少具有 "bX"
值的数组,以创建 ID 查找表,然后根据该查找表过滤主data
数组。除了"数组"不是数组之外,它是一个普通对象,因此您不能直接对其使用数组方法。因此,我调用 Object.keys()
以在数组中获取其键,然后我选择使用 .reduce()
根据具有正确格式的键创建查找表:
var data = [ {"value": "1", "text": "aaa"}, {"value": "2", "text": "bbb"}, {"value": "3", "text": "ccc"}, {"value": "4", "text": "ddd"}, {"value": "5", "text": "eee"}, {"value": "6", "text": "fff"}, {"value": "7", "text": "ggg"}, {"value": "8", "text": "hhh"}, {"value": "9", "text": "iii"}, {"value": "10", "text": "jjj"} ]
var $scope = {} // demo $scope object
$scope.array = {"badge":"1,2,5,7","id":"0","b0":"1","b1":"2","b2":"5","b3":"7"}
var bVals = Object.keys($scope.array).reduce(function(a, c) {
if (/^bd+$/.test(c))
a[$scope.array[c]] = true
return a
}, {})
console.log(bVals)
var filteredData = data.filter(function(v) { return bVals[v.value] })
console.log(filteredData)
您可以使用 JavaScript 原型函数map
和find
来过滤数据。首先获取数组的批处理属性,然后映射数组以查找相关值
$scope.array = {"badge":"1,2,3,9","id":"0","b0":"1","b1":"2","b2":"3","b3":"9"}
var batchArr = $scope.array.badge.split(',');
$scope.result = batchArr.map(o=> $scope.datas.find(k=> k.value == o))
angular.module("app",[])
.controller("ctrl",function($scope,$sce){
$scope.datas = [
{"value": "1", "text": "aaa"},
{"value": "2", "text": "bbb"},
{"value": "3", "text": "ccc"},
{"value": "4", "text": "ddd"},
{"value": "5", "text": "eee"},
{"value": "6", "text": "fff"},
{"value": "7", "text": "ggg"},
{"value": "8", "text": "hhh"},
{"value": "9", "text": "iii"},
{"value": "10", "text": "jjj"}
]
$scope.array = {"badge":"1,2,3,9","id":"0","b0":"1","b1":"2","b2":"3","b3":"9"}
var batchArr = $scope.array.badge.split(',');
$scope.result = batchArr.map(o=> $scope.datas.find(k=> k.value == o))
console.log($scope.result)
$scope.trust = function(html){
return $sce.trustAsHtml(html);
}
})
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script>
<div ng-app="app" ng-controller="ctrl">
<div ng-repeat="data in result">
<span ng-bind-html="trust(data.text)"></span>
</div>
</div>