HTML JS Simple to achieve the image of the carousel function

 This chapter records the simple picture carousel function, needs the HTML, the JS and the CSS Common Realization 1, the HTML file 
 

<! DOCTYPE html>  
2, CSS Outreach style


 * * * An elliptical translucent background * * *
/#imgyuan {
    width:182px;
    height:20px;
    border-radius:12px;
    background-color:red;
    padding-left:13px;
    margin:0 Auto;
    position:relative;
    Top: -40px;
    Background-color:rgba (1, 0, 0.3);
 * * * Every small dot * * * * * */
#imgyuan font{
    border:1px solid white;
    width:11px; 
    height:11px;
    border-radius:50%;
    margin-right:9px;
    margin-top:4px;
    Display:block;
    Float:left;
    Background-color:white;
}
 
3, JS file

var index=0;//the subscript for each picture, window.onload=function () {var start=setinterval (autoplay,1000);//Start the Carousel, change one map per second $ (' I
    Mgchangediv '). Onmouseover=function () {//When the mouse cursor is over the picture, stop the Carousel clearinterval (start);
    } $ (' Imgchangediv '). Onmouseout=function () {//When the mouse cursor is over the picture, start the Carousel Start=setinterval (autoplay,1000);
        The Var lis=$ (' Imgyuan '). getElementsByTagName (' font ');//Get all circles//when moving to the circle, then the corresponding picture var funny = function (i) {
        Lis[i].onmouseover = function () {changeimg (i)}} for (Var i=0;i<lis.length;i++) {
    Funny (i);
    }///after round, or second round function autoplay () {if (index>7) {index=0;
} changeimg (index++);
    //corresponds to the circle and picture synchronization function changeimg (index) {var list=$ (' Imgchangediv '). getElementsByTagName (' img ');
    var list1=$ (' Imgyuan '). getElementsByTagName (' font ');
        for (i=0;i<list.length;i++) {list[i].style.display= ' none ';
    list1[i].style.backgroundcolor= ' White '; } LIST[INDEX].STYLE.DISPLAy= ' block ';
List1[index].style.backgroundcolor= ' Red '; }
 
 4, feature screenshot