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
const data = [
{"id":"88","name":"Lets go testing"},
{"id":"99","name":"Have fun boys and girls"},
{"id":"108","name":"You are awesome!"}
];
这里我们得到了id值为88的对象的索引
const index = data.findIndex(item => item.id === "88");
console.log(index); // 0
我们使用splice函数从数据数组中删除指定的对象
data.splice(index,1);
console.log(data); // [{"id":"99","name":"Have fun boys and girls"},{"id":"108","name":"You are awesome!"}]
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
var items = [
{"id":"88","name":"Lets go testing"},
{"id":"99","name":"Have fun boys and girls"},
{"id":"108","name":"You are awesome!"}
];
如果你用的是jQuery，那就用jQuery吧。Grep是这样的:
items = $.grep(items, function(item) {
return item.id !== '88';
});
// items => [{ id: "99" }, { id: "108" }]
使用ES5 Array.prototype.filter:
items = items.filter(function(item) {
return item.id !== '88';
});
// items => [{ id: "99" }, { id: "108" }]
也许你正在寻找$.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
});
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];
});
下面是一个解决方案，如果你没有使用jQuery:
myArray = myArray.filter(function( obj ) {
return obj.id !== id;
});
