我一直在尝试几种方法，如何在一个数组中找到一个对象，其中ID = var，如果找到，从数组中删除对象，并返回新的对象数组。
数据:
[
{"id":"88","name":"Lets go testing"},
{"id":"99","name":"Have fun boys and girls"},
{"id":"108","name":"You are awesome!"}
]
我能够搜索数组使用jQuery $grep;
var id = 88;
var result = $.grep(data, function(e){
return e.id == id;
});
但是，当id == 88时，如何删除整个对象，并返回如下数据?
数据:
[
{"id":"99", "name":"Have fun boys and girls"},
{"id":"108", "name":"You are awesome!"}
]
当前回答
假设id是唯一的，你只需要删除一个元素拼接就可以了:
var data = [
{"id":"88","name":"Lets go testing"},
{"id":"99","name":"Have fun boys and girls"},
{"id":"108","name":"You are awesome!"}
],
id = 88;
console.table(data);
$.each(data, function(i, el){
if (this.id == id){
data.splice(i, 1);
}
});
console.table(data);
其他回答
如果测试严格相等，请确保将对象id强制为整数:
var result = $.grep(data, function(e, i) {
return +e.id !== id;
});
Demo
如果你使用的是Underscore.js，很容易根据键删除对象。
例子:
var temp1=[{id:1,name:"safeer"}, // Temporary array
{id:2,name:"jon"},
{id:3,name:"James"},
{id:4,name:"deepak"},
{id:5,name:"ajmal"}];
var id = _.pluck(temp1,'id'); // Get id array from temp1
var ids=[2,5,10]; // ids to be removed
var bool_ids=[];
_.each(ids,function(val){
bool_ids[val]=true;
});
_.filter(temp1,function(val){
return !bool_ids[val.id];
});
我可以grep数组的id，但我怎么能删除整个对象的id == 88
简单地通过相反的谓词进行过滤:
var data = $.grep(data, function(e){
return e.id != id;
});
也许你正在寻找$.grep()函数:
arr = [
{"id":"88","name":"Lets go testing"},
{"id":"99","name":"Have fun boys and girls"},
{"id":"108","name":"You are awesome!"}
];
id = 88;
arr = $.grep(arr, function(data, index) {
return data.id != id
});
Array.prototype.removeAt = function(id) {
for (var item in this) {
if (this[item].id == id) {
this.splice(item, 1);
return true;
}
}
return false;
}
这应该可以做到，jsfiddle
