Javascript 获取唯一和重复的值
我有以下JSON数据:Javascript 获取唯一和重复的值,javascript,angularjs,json,for-loop,filter,Javascript,Angularjs,Json,For Loop,Filter,我有以下JSON数据: vm.userListData = [{ "listId": 1, "permission": "READ" }, { "listId": 2, "permission": "WRITE" }, { "listId": 2, "permission": "READ" }, { "listId": 3, "permissio
vm.userListData = [{
"listId": 1,
"permission": "READ"
}, {
"listId": 2,
"permission": "WRITE"
}, {
"listId": 2,
"permission": "READ"
}, {
"listId": 3,
"permission": "READ"
}, {
"listId": 3,
"permission": "WRITE"
}, {
"listId": 4,
"permission": "WRITE"
}, {
"listId": 5,
"permission": "WRITE"
}]
还有这个:
vm.userComplementaryList = [{
"listId": 1,
"confidentiality": "PUBLIC",
"listName": "List name here..1",
"permission": "WRITE"
}, {
"listId": 2,
"confidentiality": "PUBLIC",
"listName": "List name here..2",
"permission": "READ"
}, {
"listId": 3,
"confidentiality": "CONFIDENTIAL",
"listName": "List name here..3",
"permission": "WRITE"
}, {
"listId": 4,
"confidentiality": "CONFIDENTIAL",
"listName": "List name here..4",
"permission": "WRITE"
}, {
"listId": 5,
"confidentiality": "CONFIDENTIAL",
"listName": "List name here..5",
"permission": "READ"
}]
有了这两个JSON数据,我必须过滤并获得唯一的值,并将它们放入数组中,而重复的值(listId和permission)则将它们放入另一个数组中。
我这样做:
vm.listForGrid = [];
vm.listForDropDown = [];
(function(){
for(var i = 0; i < vm.userComplementaryList.length; i++) {
for(var j = 0; j < vm.userListData.length; j++) {
if( (vm.userComplementaryList[i].listId == vm.userListData[j].listId) && (vm.userComplementaryList[i].permission == vm.userListData[j].permission) ) {
vm.listForGrid.push(vm.userComplementaryList[i]);
}
else {
vm.listForDropDown.push(vm.userComplementaryList[i]);
}
}
}
})();
vm.listformrid=[];
vm.listForDropDown=[];
(功能(){
对于(var i=0;i
vm.listForGrid
正常,但是vm.listForDropDown
值不止一次是相同的值,我必须中断
循环
重复的值在两个数组中都是具有listId和权限的相同值
谢谢大家! 如果授予了权限,您仍然可以使用哈希表作为引用。然后,您只需要一个没有嵌套循环的单循环来对项目进行排序
var vm={},
权限={};
vm.userListData=[{“listId”:1,“权限”:“读取”},{“listId”:2,“权限”:“读取”},{“listId”:2,“权限”:“读取”},{“listId”:3,“权限”:“写入”},{“listId”:4,“权限”:“写入”},{“listId”:5,“权限”:“写入”};
vm.userComplementaryList=[{“listId”:1,“机密性”:“PUBLIC”,“listName”:“List name here..1”,“权限”:“WRITE”},{“listId”:2,“机密性”:“PUBLIC”,“listName”:“List name here..2”,“权限”:“READ”},{“listId”:3,“机密性”,“listName”:“List name here..3”,“权限”:“WRITE”},{“listId”:4,“机密性”:“机密性”,“列表名”:“此处列表名..4”,“权限”:“写入”},{“列表ID”:5,“机密性”:“机密性”,“列表名”:“此处列表名..5”,“权限”:“读取”}];
vm.listForDropDown=[];
vm.userListData.forEach(函数(p){
权限[p.listId]=权限[p.listId]| |{};
权限[p.listId][p.permission]=true;
});
vm.listformrid=vm.userComplementaryList.filter(函数(a){
if(权限[a.listId]&&permissions[a.listId][a.permission]){
返回true;
}
vm.listForDropDown.push(a);
});
console.log(vm.listformrid);
console.log(vm.listForDropDown)代码>
.as console wrapper{max height:100%!important;top:0;}
如果授予了权限,您仍然可以使用哈希表作为引用。然后,您只需要一个没有嵌套循环的单循环来对项目进行排序
var vm={},
权限={};
vm.userListData=[{“listId”:1,“权限”:“读取”},{“listId”:2,“权限”:“读取”},{“listId”:2,“权限”:“读取”},{“listId”:3,“权限”:“写入”},{“listId”:4,“权限”:“写入”},{“listId”:5,“权限”:“写入”};
vm.userComplementaryList=[{“listId”:1,“机密性”:“PUBLIC”,“listName”:“List name here..1”,“权限”:“WRITE”},{“listId”:2,“机密性”:“PUBLIC”,“listName”:“List name here..2”,“权限”:“READ”},{“listId”:3,“机密性”,“listName”:“List name here..3”,“权限”:“WRITE”},{“listId”:4,“机密性”:“机密性”,“列表名”:“此处列表名..4”,“权限”:“写入”},{“列表ID”:5,“机密性”:“机密性”,“列表名”:“此处列表名..5”,“权限”:“读取”}];
vm.listForDropDown=[];
vm.userListData.forEach(函数(p){
权限[p.listId]=权限[p.listId]| |{};
权限[p.listId][p.permission]=true;
});
vm.listformrid=vm.userComplementaryList.filter(函数(a){
if(权限[a.listId]&&permissions[a.listId][a.permission]){
返回true;
}
vm.listForDropDown.push(a);
});
console.log(vm.listformrid);
console.log(vm.listForDropDown)代码>
.as控制台包装{max height:100%!important;top:0;}
我解决了这个问题:
(function(){
for(var i = 0; i < vm.userComplementaryList.length; i++) {
var found = false;
for(var j = 0; j < vm.userListData.length; j++) {
if( (vm.userComplementaryList[i].listId == vm.userListData[j].listId) && (vm.userComplementaryList[i].permission == vm.userListData[j].permission) ) {
found = true;
break;
}
}
if(found) {
vm.listForGrid.push(vm.userComplementaryList[i]);
}
else {
vm.listForDropDown.push(vm.userComplementaryList[i]);
}
}
})();
(函数(){
对于(var i=0;i
我解决了这个问题:
(function(){
for(var i = 0; i < vm.userComplementaryList.length; i++) {
var found = false;
for(var j = 0; j < vm.userListData.length; j++) {
if( (vm.userComplementaryList[i].listId == vm.userListData[j].listId) && (vm.userComplementaryList[i].permission == vm.userListData[j].permission) ) {
found = true;
break;
}
}
if(found) {
vm.listForGrid.push(vm.userComplementaryList[i]);
}
else {
vm.listForDropDown.push(vm.userComplementaryList[i]);
}
}
})();
(函数(){
对于(var i=0;i
这是一个使用array.some的分拣机版本
vm.userComplementaryList.forEach(function(vCom) {
vm.userListData.some(function(vUser) {
return (vCom.listId == vUser.listId && vCom.permission == vUser.permission);
}) ? vm.listForGrid.push(vCom) : vm.listForDropDown.push(vCom);
})
这是一个使用array.some的分拣机版本
vm.userComplementaryList.forEach(function(vCom) {
vm.userListData.some(function(vUser) {
return (vCom.listId == vUser.listId && vCom.permission == vUser.permission);
}) ? vm.listForGrid.push(vCom) : vm.listForDropDown.push(vCom);
})
break
当您发现listid相同时。将代码放入plunkrbreak
当您发现listid相同时。将代码放入plunkr您仍然需要一个嵌套循环来查找相同的元素。您仍然需要一个嵌套循环来查找相同的元素。