如何在音频对象的 onerror 事件中访问全局变量

Question

我想从 audio.onerror 函数访问 isDisabled 变量并想重置 isDisabled 的值但无法设置它。

public isDisabled: boolean = false;
private verifyPrompt(url: string): boolean{
           let audio = new Audio(this.promptMessageUrl);
           this.isDisabled = 
           audio.load;
        audio.onerror = function(e){
            this.isDisabled = true;
        }
    }

Answer 1

删除function关键字并使用箭头函数表示法()=>。

audio.onerror = (e) => {
    this.isDisabled = true;
}