2020-3-27原生JS/ZL5：上拉加载对scroll的实际运用

KaTeX parse error: Expected '}', got 'EOF' at end of input: …    var viewH =(window).height();//可见高度812
        // console.log(viewH)
        var contentH = $(document).height();//内容高度989         // console.log(contentH)         var scrollTop =$(window).scrollTop();//滚动高度177
        // console.log(scrollTop)
        var nr =$("#xl").height();//文本内容489
        // console.log(nr)
        if(contentH - viewH - scrollTop <= 0){
            if(record.length != 0){
                if(record.length == 10){
                    p = p + 1;
                    obtain();
                }
            }
        }
    });