jQuery marquee seamless scrolling plug-in implementation tutorial

This article mainly introduces a plug-in that implements a marquee seamless scrolling based on jQuery. It is very good and has reference value. Friends who need it can refer to it. I hope it can help everyone.

Based on jQuery, a plug-in that implements marquee seamless scrolling has been released to git.oschina.net, and the demonstration will be updated later (updated to http://git.oschina.net/mqycn/jQueryMarquee ).

The code is as follows:

/**
 * 类库名称：jQuery.marquee
 * 实现功能：基于 jquery 实现的 marquee 无缝滚动插件
 * 作者主页：http://www.miaoqiyuan.cn/
 * 联系邮箱：mqycn@126.com
 * 使用说明：http://www.miaoqiyuan.cn/p/jquery-marquee
 * 最新版本：http://git.oschina.net/mqycn/jQueryMarquee
*/
jQuery.fn.extend({
  marquee : function(opt, callback){
    opt = opt || {};
    opt.speed = opt.speed || 30;
    opt.direction = opt.direction || 'left';
    opt.pixels = opt.pixels || 2;
    switch( opt.direction ){
      case "left":
      case "right":
        opt.weight = "width";
        opt.margin = "margin-left";
        opt.tpl = &#39;<table><tr><td>[TABLE]</td><td>[TABLE]</td></tr></table>&#39;;
        break;
      case "top":
      case "bottom":
        opt.weight = "height";
        opt.margin = "margin-top";
        opt.tpl = &#39;<table><tr><td>[TABLE]</td></tr></tr><td>[TABLE]</td></tr></table>&#39;;
        break;
      default:
        throw Error("[jQuery.marquee.js] Options.direction Error!");
    }
    switch( opt.direction ){
      case "left":
      case "top":
        opt.addon = -1;
        break;
      case "right":
      case "bottom":
        opt.addon = 1;
        break;
      default:
        throw Error("[jQuery.marquee.js] Options.direction Error!");
    }
    callback = typeof callback == "function" ? callback : function(){};
    //设置宽度
    $(this).each(function(){
      if( this.control ){
        clearInterval(this.control);
      } else {
        //如果第一次执行，初始化代码
        $(this)
          .data(opt.weight, opt.weight == &#39;width&#39; ? $(this).find("table").width() : $(this).find("table").height())
          .width($(this).data(opt.weight) * 2)
          .html(opt.tpl.replace(/\[TABLE\]/ig, $(this).html()))
          .mouseover(function(){
            $(this).data("pause", true);
          }).mouseout(function(){
            $(this).data("pause", false);
          });
      }
      this.control = setInterval((function(){
        if( $(this).data("pause") ){
          return;
        }
        var _margin = parseInt($(this).css(opt.margin)) + opt.addon * opt.pixels;
        if( opt.addon == -1 && _margin + $(this).data(opt.weight) < 0 ){
          _margin = 0;
        }else if( opt.addon == 1, _margin > 0 ){
          console.log(_margin < 0,$(this).data(opt.weight));
          _margin = -1 * $(this).data(opt.weight);
        }
        $(this).css(opt.margin, _margin + "px");
        callback.bind(this)();
      }).bind(this), opt.speed);
    });
    return $(this);
  }
});

If used below IE9, you need to add the following code before:

/**
 * IE8插件（解决 function 不支持 bind 的问题），非原创
*/
if (!Function.prototype.bind) {
  Function.prototype.bind = function(oThis) {
    if (typeof this !== "function") {
      throw new TypeError("[jQuery.marquee.ie8] Caller is not a function");
    }
    var aArgs = Array.prototype.slice.call(arguments, 1),
      fToBind = this,
      fNOP = function() {},
      fBound = function() {
        return fToBind.apply(this instanceof fNOP && oThis ? this : oThis, aArgs.concat(Array.prototype.slice.call(arguments)));
      };
    fNOP.prototype = this.prototype;
    fBound.prototype = new fNOP();
    return fBound;
  };
}

There are three optional parameters and a callback method.

direction, moving direction: support left: left right: right top: top bottom: bottom;

pixels, the number of pixels moved each time

speed, two moves The number of previous intervals (milliseconds)

The calling method is as follows:

##

$("scroll-a").marquee();
$("scroll-b").marquee({direction:'top'});
$("scroll-c").marquee({direction:'top',pixels:2,speed:30});
$("scroll-d").marquee({direction:"top",pixels:2,speed:30}, function(){
  console.log("执行了一次");
});

Related recommendations:

WeChat Mini program component marquee instance sharing

Detailed introduction to the marquee tag in html

Summary of the usage examples of the marquee tag JS to achieve the marquee scrolling effect Detailed explanation of examples

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