angular 监听 Windows 滚动事件 实现页面滚动加载

 this.renderer2.listen('window', 'scroll', () => {
            console.log('scroll');
        });
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  //监听滚动，加载数据
    @HostListener('window:scroll', ['$event']) public onScroll = ($event) => {

        //客户端高度
        var clientH = document.documentElement.clientHeight;
        //body高度
        var bodyH = document.body.clientHeight;

        //滚动的高度
        var scrollTop = document.documentElement.scrollTop;
        console.log(bodyH)
        //滚动到底部60以内
        if (bodyH - clientH - scrollTop < 80) {
            if (!this.flag) {
                console.log('翻页');
                //翻页
                this.changePage('+');
            }
            this.flag = true;
        } else {
            this.flag = false;
        }
    }Copy