使用angular js删除json数组中的重复值
使用angular js删除json数组中的重复值
提问于 2016-06-13 18:30:13
我想从下面的json数组中删除重复项
$scope.array = [
{"name":"aaa","key":"1"},
{"name":"bbb","key":"2"},
{"name":"aaa","key":"1"},
{"name":"ccc","key":"3"},
{"name":"bbb","key":"2"}
];我试着跟踪代码，但它不起作用
var ids = {};
$scope.array.forEach(function (list) {
ids[list.name] = (ids[list.name] || 0) + 1;
});
var finalResult = [];
$scope.array.forEach(function (list) {
if (ids[list.name] === 1) finalResult.push(student);
});
console.log(finalResult);这是预期的结果。
$scope.array = [
{"name":"aaa","key":"1"},
{"name":"bbb","key":"2"} ,
{"name":"ccc","key":"3"}
];回答 6
Stack Overflow用户
发布于 2016-06-13 18:33:40
您可以使用唯一过滤器。
<tr ng-repeat="arr in array | unique: 'key'" >
<td> {{ arr.name }} , {{ arr.key }} </td>
</tr>Stack Overflow用户
发布于 2016-06-13 18:39:29
您可以使用
$scope.array = = [{
"testada": "ecom",
"id": "27"
}, {
"testada": "alorta",
"id": "27"
}, {
"testada": "france24",
"id": "23"
}, {
"testada": "seloger",
"id": "23"
}];
var arr = [],
collection = [];
$scope.array.forEach(json_all, function (index, value) {
if ($.inArray(value.id, arr) == -1) {
arr.push(value.id);
collection.push(value);
}
});
console.log(json_all);
console.log(collection);
console.log(arr);
Stack Overflow用户
发布于 2016-06-13 19:43:51
$scope.array = [
{"name":"aaa","key":"1"},
{"name":"bbb","key":"2"},
{"name":"aaa","key":"1"},
{"name":"ccc","key":"3"},
{"name":"bbb","key":"2"}
];
var newArr = []; //this will be new array with no duplicate value
for (var i = 0; i < $scope.array.length; i++) {
if(!ifContains($scope.array[i])){
newArr.push($scope.array[i]);
}
}
function ifContains(obj){
debugger
var flag = false;
for(var i = 0; i < newArr.length; i++){
if(newArr[i].name == obj.name && newArr[i].key == obj.key )
return true;
else
flag = false;
}
return flag;
}页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/37787397
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