在javascript中从类数组中获取对象[重复]
这个问题在这里已有答案:
我有一个类似的javascript类,
class Snake{
constructor(id, trail){
this.velocityX = 0;
this.velocityY = -1;
this.trail = trail;
this.id = id;
}
moveRight(){
console.log('move');
}
}
和一个存储Snake对象的数组 .
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));
例如,我想从数组中删除id为20的元素 .
我怎样才能做到这一点?
回答(3)
那这个呢
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);
2 years ago
我在这里使用拼接:
Snippet: