如何解决 快速点击多次触发的bug 期望快速点击只一次生效

    var lastClick;    
    lockClick(){
        var nowClick = new Date();
        if (lastClick === undefined) {
            lastClick = nowClick;
            return true;
        } else {
            if (Math.round((nowClick.getTime() - lastClick.getTime())) > 500) {
                lastClick = nowClick;
                return true;
            }
            else {
                lastClick = nowClick;
                return false
            }
        }
    }

        this.on('click',()=>{
            if (this.lockClick()) {
                //你的函数代码
            }
        })    var lastClick;    
    lockClick(){