Question

我有一个javascript类，

this.snakeList = new Array();
this.snakeList.push(new Snake(10, newSnakeTrail));
this.snakeList.push(new Snake(20, newSnakeTrail));
this.snakeList.push(new Snake(30, newSnakeTrail));
this.snakeList.push(new Snake(22, newSnakeTrail));
this.snakeList.push(new Snake(40, newSnakeTrail));

和一个存储Snake对象的数组。

{{1}}

例如，我要从ID为20的数组中删除元素。

我该怎么做？

Answer 1

那

this.snakeList = this.snakeList.filter(x => x.id != 20);

let snakes = [{name: 'fuss', id: 10}, {name: 'huss', id: 20}, {name: 'hurr', id: 60}]
//Before removal
console.log("Before removal");
console.log(snakes);

snakes = snakes.filter(x => x.id != 20);

//After removal
console.log("After removal");
console.log(snakes);

Answer 2

var snakeList = [
{
id:10,
trail:{}
},
{
id:20,
trail:{}
},
{
id:30,
trail:{}
}
]

snakeList.forEach((x,index)=>{

if(x.id === 20){
snakeList.splice(index,1)
}
})

console.log(snakeList)

看到这是工作示例希望对您有帮助

Answer 3

我将在此处使用拼接：

for (var i = 0; i < snakes.length; i++) {
    var obj = snakes[i];
    if (obj.id === 20) {
        snakes.splice(i, 1);
        i--;
    }
}

代码段：

let snakes = [{name: 'fuss', id: 10}, {name: 'huss', id: 20}, {name: 'hurr', id: 60}]

for (var i = 0; i < snakes.length; i++) {
    var obj = snakes[i];
    if (obj.id === 20) {
        snakes.splice(i, 1);
        i--;
    }
}

console.log(snakes)

从JavaScript中的类数组获取对象

3 个答案: