The improved version of seamless scrolling supports up, down, left and right scrolling (encapsulated into functions)_javascript skills

复制代码 代码如下:

   
   
   


   

       
       
       

           

               
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scroll.js：

复制代码 代码如下:

/**********
Function: Achieve horizontal or vertical seamless scrolling
Parameters: direction, a total of 4 values: left, right, top, bottom
Speed ​​moving distance
iTime How much time will it take to start moving? If you don’t write it, the page will start moving after loading
**********/
function scroll(direction,speed,iTime){
    var oDiv = document.getElementById('scroll');
    var oUl = oDiv.getElementsByTagName('ul')[0];
    var aLi = oDiv.getElementsByTagName('li');
    var aBtn = oDiv.getElementsByTagName('a');
    var timer = null;
    var iSpeed = 0;
    var flag = true;    //判断水平移动还是垂直移动

    oUl.innerHTML = oUl.innerHTML;

    switch(direction){
        case 'left':
            iSpeed = -speed;
            oUl.style.width = aLi[0].offsetWidth * aLi.length 'px';
            flag = true;
            break;
        case 'right':
            iSpeed = speed;
            oUl.style.width = aLi[0].offsetWidth * aLi.length 'px';
            flag = true;
            break;
        case 'top':
            iSpeed = -speed;
            flag = false;
            break;
        case 'bottom':
            iSpeed = speed;
            flag = false;
            break;
    };

    setTimeout(move,iTime);

    //左按钮和上按钮
    aBtn[0].onclick = function(){
        clearInterval(timer);
        iSpeed = -speed;
        move();
    };

    //右按钮和下按钮
    aBtn[1].onclick = function(){
        clearInterval(timer);
        iSpeed = speed;
        move();
    };

    oUl.onmouseover = function(){
        clearInterval(timer);
    };

    oUl.onmouseout = function(){
        move();
    };

    function move(){   
        timer = setInterval(function(){
            if(flag){
                oUl.style.left = oUl.offsetLeft iSpeed 'px';
                if(oUl.offsetLeft < -oUl.offsetWidth / 2){
                    oUl.style.left = '0';
                }else if(oUl.offsetLeft > 0){
                    oUl.style.left = - oUl.offsetWidth / 2 'px';
                }
            }else{
          oUl.style.top = oUl.offsetTop                                                                                           Ul.style.top = '0' ;
             }else if(oUl.offsetTop >= 0){
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};
};


It should be noted that the html structure must be like the above structure.