各位,我对javascript和HTML部分有一个问题。
我需要单击向下箭头来从第一个更改为另一个,等等。不幸的是,代码没有反应,所以我真的不知道如何解决它。
一个简短的代码,以获得更好的概述。
主要问题将在javascript中。
HTML
HTML足够好,可以更好地面向对象。
<section> <div style="width:40px; height:40px; background-color:black;" onclick="bottomscroll()"> </section>
<section > <h1>text</h1></section>
<section> <h1>text</h1></section>
<section> <h1>text</h1></section>
<section> <h1>text</h1></section>
CSS
我还缩短了CSS以获得更好的概述
.display-block { display:block; }
.display-none { display:none; }
#fullpage { overflow: hidden; margin: 0; padding: 0;
}
#fullpage section { min-height: 100%; }
#fullpage section h4 { margin: 0; padding: 0; }
#fullpage section:nth-child(1)
{
color:black;
background:url(/img/fabian-grohs-597395-unsplash.jpg);
background-repeat: no-repeat;
background-size: cover;
background-position: center;
height: 100vh;
}
#fullpage section:nth-child(1) h1
{
margin: 0;
padding: 0;
color:whitesmoke;
text-align: center;
padding: 70px;
font-family: 'Montserrat', sans-serif;
font-size:40px;
}
#fullpage section:nth-child(1) p
{
text-align: center;
color:white;
font-size:18px;
width: 70%;
margin:0 auto;
font-family: 'Inconsolata', monospace;
position: relative;
}
#fullpage section:nth-child(2)
{
color:#333;
background: white;
min-height: 100vh;
}
#fullpage section:nth-child(2) h1
{
margin: 0;
padding: 0;
color:#333;
text-align: center;
padding: 20px 0px;
font-family: 'Montserrat', sans-serif;
}
#fullpage section:nth-child(3)
{
color:black;
background: green;
min-height: 100vh;
}
#fullpage section:nth-child(4)
{
color:black;
background: green;
min-height: 100vh;
}
#fullpage section:nth-child(5)
{
color:black;
background: green;
min-height: 100vh;
}
Javascript
主要问题将在javascript中。
var page = 1;
function topscroll()
{
if(page != 1)
{
page -= 1;
var page = document.querySelector("#fullpage section:nth-child("+page")");
for(i = 0; i < 5; i++)
{
var pagehidden = document.querySelector("#fullpage section:nth-child("+i")");
pagehidden.classList.add("display-none");
pagehidden.classList.remove("display-block");
}
page.classList.add("display-block");
}
}
function bottomscroll()
{
if(page != 5)
{
page += 1;
var page = document.querySelector("#fullpage section:nth-child("+page")");
for(i = 0; i < 5; i++)
{
var pagehidden = document.querySelector("#fullpage section:nth-child("+i")");
pagehidden.classList.add("display-none");
pagehidden.classList.remove("display-block");
}
page.classList.add("display-block");
}
}
var page = 1;
function topscroll()
{
if(page != 1)
{
page -= 1;
var page = document.querySelector("#fullpage section:nth-child("+page")");
for(i = 0; i < 5; i++)
{
var pagehidden = document.querySelector("#fullpage section:nth-child("+i")");
pagehidden.classList.add("display-none");
pagehidden.classList.remove("display-block");
}
page.classList.add("display-block");
}
}
function bottomscroll()
{
if(page != 5)
{
page += 1;
var page = document.querySelector("#fullpage section:nth-child("+page")");
for(i = 0; i < 5; i++)
{
var pagehidden = document.querySelector("#fullpage section:nth-child("+i")");
pagehidden.classList.add("display-none");
pagehidden.classList.remove("display-block");
}
page.classList.add("display-block");
}
}
.display-block { display:block; }
.display-none { display:none; }
#fullpage { overflow: hidden; margin: 0; padding: 0;
}
#fullpage section { min-height: 100%; }
#fullpage section h4 { margin: 0; padding: 0; }
#fullpage section:nth-child(1)
{
color:black;
background:url(/img/fabian-grohs-597395-unsplash.jpg);
background-repeat: no-repeat;
background-size: cover;
background-position: center;
height: 100vh;
}
#fullpage section:nth-child(1) h1
{
margin: 0;
padding: 0;
color:whitesmoke;
text-align: center;
padding: 70px;
font-family: 'Montserrat', sans-serif;
font-size:40px;
}
#fullpage section:nth-child(1) p
{
text-align: center;
color:white;
font-size:18px;
width: 70%;
margin:0 auto;
font-family: 'Inconsolata', monospace;
position: relative;
}
#fullpage section:nth-child(2)
{
color:#333;
background: white;
min-height: 100vh;
}
#fullpage section:nth-child(2) h1
{
margin: 0;
padding: 0;
color:#333;
text-align: center;
padding: 20px 0px;
font-family: 'Montserrat', sans-serif;
}
#fullpage section:nth-child(3)
{
color:black;
background: green;
min-height: 100vh;
}
#fullpage section:nth-child(4)
{
color:black;
background: green;
min-height: 100vh;
}
#fullpage section:nth-child(5)
{
color:black;
background: green;
min-height: 100vh;
}
<section> <div style="width:40px; height:40px; background-color:black;" onclick="bottomscroll()"> </section>
<section><h1>text</h1></section>
<section><h1>text</h1></section>
<section><h1>text</h1></section>
<section><h1>text</h1></section>
https://stackoverflow.com/questions/52936140
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