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Javascript: Seamless control between left and right _ javascript tips-js tutorial

Source: Internet
Author: User
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This article mainly introduces the method and sample code for javascript to implement seamless scrolling between left and right controls. For more information, see seamless scrolling, which is a special effect that is frequently used in projects, there are also a lot of sample code on the Internet. Here we will share with you a piece of simple and practical code with good compatibility. Let's take a closer look at it.

Html code:

The Code is as follows:


<Html>
<Head lang = "en">
<Meta charset = "UTF-8">
<Title> seamless scrolling Title>
<Script src = "js/0010.js? 1.1.23 "> Script>
<Link rel = "stylesheet" type = "text/css" href = "css/0010.css? 1.1.23 "/>
Head>
<Body>
<A href = "javascript:"> left A>
<A href = "javascript:"> right A>
<P id = "p1">
<Ul>
<Li> Li>
<Li> Li>
<Li> Li>
<Li> Li>
Ul>
P>
Body>
Html>

CSS code

The Code is as follows:


*{
Margin: 0;
Padding: 0;
}
# P1 {
Overflow: hidden;
Background: blue;
Position: relative;
Width: 600px;
Height: 150px;
Margin: 100px auto;
}
# P1 ul {
Position: absolute;
Left: 0px;
Top: 0px;
List-style: none;
}
# P1 ul li {
Float: left;
}
# P1 ul li img {
Width: 150px;
Height: 150px;
}

Js: Code

The Code is as follows:


Window. onload = function (){
Var oDiv = document. getElementById ('p1 ');
Var oUl = oDiv. getElementsByTagName ('ul ') [0];
Var aLi = oUl. getElementsByTagName ('lil ');
Var timer = null;
Var speed = 2; // control the rolling speed and direction
OUl. innerHTML = oUl. innerHTML + oUl. innerHTML;
OUl. style. width = aLi [0]. offsetWidth * aLi. length + 'px ';
Timer = setInterval (move, 30 );
ODiv. onmouseover = function () {// move the cursor to tentative
ClearInterval (timer );
};
ODiv. onmouseout = function () {// move the mouse out to continue scrolling
Timer = setInterval (move, 30 );
}
Document. getElementsByTagName ('A') [0]. onclick = function (){
Speed =-2;
}
Document. getElementsByTagName ('A') [1]. onclick = function (){
Speed = 2;
}
Function move () {// scroll the image
If (oUl. offsetLeft <-oUl. offsetWidth/2 ){
OUl. style. left = 0;
}
If (oUl. offsetLeft> 0 ){
OUl. style. left =-oUl. offsetWidth/2 + 'px ';
}
OUl. style. left = oUl. offsetLeft + speed + 'px ';
}
}

Is the effect very good.

This article is an English version of an article which is originally in the Chinese language on aliyun.com and is provided for information purposes only. This website makes no representation or warranty of any kind, either expressed or implied, as to the accuracy, completeness ownership or reliability of the article or any translations thereof. If you have any concerns or complaints relating to the article, please send an email, providing a detailed description of the concern or complaint, to info-contact@alibabacloud.com. A staff member will contact you within 5 working days. Once verified, infringing content will be removed immediately.

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