使用滚动显示/隐藏div [英] Show/Hide div with scroll

问题描述

我知道标题不是最具描述性的，并且有类似问题的更多主题，但我找不到任何答案。事实上，我得到了这很感谢你们这样，这是我想做的。

I know the title isn't the most descriptive and there are many more topics with similar questions like this, but I couldn't find any answers. In fact, I got this far thanks to you guys so, here's what I'm trying to do.

我有一个DIV，当页面是滚动到某个位置（触发器），标记为 #othdiv 。当您向下滚动到标记为＃othdiv2 的下一个位置（触发器）时，此DIV消失。

I have a DIV that I want to show when the page is scrolled to a certain position (trigger), marked by #othdiv. This DIV disappears when you scroll further down to the next position (trigger) marked as #othdiv2.

这是一个非常简单的解决方案但我只是不能弄清楚。我尝试了条件if语句，重复代码，删除行，新变量...叹息...请帮助。

This feels like it's a very simple solution but I just can't figure it out. I have tried conditional if statements, duplicating codes, removing lines, new variables... sigh... please help.

$(document).ready(function() {
$("#dvid").hide(); //hide your div initially
var topOfOthDiv = $("#othdiv").offset().top;
var topOfOthDiv2 = $("#othdiv2").offset().top;
$(window).scroll(function() {
    if($(window).scrollTop() > topOfOthDiv) { //scrolled past the other div?
        $("#dvid").show(); //reached the desired point -- show div
    }
        else
    if($(window).scrollTop() < topOfOthDiv) { //scrolled past the other div?                
        $("#dvid").hide(); //reached the desired point -- show div            
    }           
    });
});

当前代码示例：
http://jsfiddle.net/DnJ2z/124/

底线：
I尝试做类似这样的事情： http://mailchimp.com/2012/ （注意标题[应用程式，支援，操作等]）

Bottom line: I'm trying to do something similar to this: http://mailchimp.com/2012/ (notice the titles [the app, support, operations, etc])

推荐答案

尝试使用&& code>如：if（this and that）{do something} else {do not}

Try using && as in: if (this and that){do something} else{don't}

工作示例

Working Example

$(document).ready(function () {
    var topOfOthDiv = $("#othdiv").offset().top;
    var topOfOthDiv2 = $("#othdiv2").offset().top;
    $(window).scroll(function () {
        if ($(window).scrollTop() > topOfOthDiv && $(window).scrollTop() < topOfOthDiv2) {
            $("#dvid").show();
        } else {
            $("#dvid").hide();
        }
    });
});

有关逻辑运算符的更好解释，请参阅：逻辑运算符MDN

For a much better explanation of logical operators check out: Logical Operators MDN

这篇关于使用滚动显示/隐藏div的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！