在Deezer Javascript SDK中,DZ.Event.unsubscribe
方法可以用于unsubscribe all subscriptions for a specific event,但有没有办法取消订阅特定订阅而不是所有订阅?
DZ.Event.subscribe
方法不返回可以在取消订阅调用中给出的任何ID,并且将订阅回调函数发送到unsubscription方法也不起作用:
function callback(args) {
console.log('GOT player_position 1', args);
}
DZ.Event.subscribe('player_position', callback);
DZ.Event.subscribe('player_position', args => {
console.log('GOT player_position 2', args);
});
DZ.Event.unsubscribe('player_position', callback); // Unsubscribes both subscriptions
答案 0 :(得分:1)
目前只有讨厌的方法可以访问DZ.Event.callbacks
例如你可以:
//declare your own unsubscribe function
var unsubscribe = (event, callback) => {
if(DZ.Event.callbacks[event]) {
let index = DZ.Event.callbacks[event].indexOf(callback); //find the index of your callback
if(index !== -1) {
DZ.Event.callbacks[event].splice(index, 1); //remove it
}
}
}