remove object from js array knowing it's Id

This question already has an answer here:

How do I remove a particular element from an array in JavaScript? 63 answers

---

Try like this

var id=2;
var list=[
  { Id : 1,Name : 'a' },
  { Id : 2,Name : 'b' },
  { Id : 3,Name : 'c' }
];
var index=list.map(function(x){ return x.Id; }).indexOf(id);

list.splice(index,1);

JSFIDDLE

---

你能试一下吗

newArray = myArr
  .filter(function(element) {
    return element.id !== thisId;
  });

---

Two solutions, one evolve creating new instance and one changes the instance of your array.

Filter:

idToRemove = DESIRED_ID;

myArr = myArr.filter(function(item) {
    return item.Id != idToRemove;
});

As you can see, the filter method returns new instance of the filtered array.

Second option is to find the index of the item and then remove it with splice :

idToRemove = DESIRED_ID;

index = myArr.map(function(item) {
    return item.Id
}).indexOf(idToRemove);

myArr.splice(index, 1);

链接地址: http://www.djcxy.com/p/19018.html

上一篇: 来自数组中的对象的值，Javascript

下一篇: 从js数组中移除对象知道它是Id