js实现移动端导航点击自动滑动效果

移动端模拟导航可点击自动滑动 0.1.4。

导航可左右滑动,可点击边缘的一个,自动滚动下一个到可视范围【依赖于iscroll.js】。

废话不多说直接上代码:

/* * 移动端模拟导航可点击自动滑动 0.1.4 * Date: 2017-01-11 * by: xiewei * 导航可左右滑动,可点击边缘的一个,自动滚动下一个到可视范围【依赖于iscroll.js】 */ (function ($) { $.fn.navbarscroll = function (options) { //各种属性、参数 var _defaults = { className:'cur', //当前选中点击元素的class类名 clickScrollTime:300, //点击后滑动时间 duibiScreenWidth:0.4, //单位以rem为准,默认为0.4rem scrollerWidth:3, //单位以px为准,默认为3,[仅用于特殊情况:外层宽度因为小数点造成的不精准情况] defaultSelect:0, //初始选中第n个,默认第0个 fingerClick:0, //目标第0或1个选项触发,必须每一项长度一致,方可用此项 endClickScroll:function(thisObj){}//回调函数 } var _opt = $.extend(_defaults, options); this.each(function () { //插件实现代码 var _wrapper = $(this); var _win = $(window); var _win_width = _win.width(),_wrapper_width = _wrapper.width(),_wrapper_off_left = _wrapper.offset().left; var _wrapper_off_right=_win_width-_wrapper_off_left-_wrapper_width; var _obj_scroller = _wrapper.children('.scroller'); var _obj_ul = _obj_scroller.children('ul'); var _obj_li = _obj_ul.children('li'); var _scroller_w = 0; _obj_li.css({"margin-left":"0","margin-right":"0"}); for (var i = 0; i < _obj_li.length; i++) { _scroller_w += _obj_li[i].offsetWidth; } _obj_scroller.width(_scroller_w+_opt.scrollerWidth); var myScroll = new IScroll('#'+_wrapper.attr('id'), { eventPassthrough: true, scrollX: true, scrollY: false, preventDefault: false }); _init(_obj_li.eq(_opt.defaultSelect)); _obj_li.click(function(){ _init($(this)); }); //解决PC端谷歌浏览器模拟的手机屏幕出现莫名的卡顿现象,滑动时禁止默认事件(2017-01-11) _wrapper[0].addEventListener('touchmove',function (e){e.preventDefault();},false); function _init(thiObj){ var $this_obj=thiObj; var duibi=_opt.duibiScreenWidth*_win_width/10,this_index=$this_obj.index(),this_off_left=$this_obj.offset().left,this_pos_left=$this_obj.position().left,this_width=$this_obj.width(),this_prev_width=$this_obj.prev('li').width(),this_next_width=$this_obj.next('li').width(); var this_off_right=_win_width-this_off_left-this_width; if(_scroller_w+2>_wrapper_width){ if(_opt.fingerClick==1){ if(this_index==1){ myScroll.scrollTo(-this_pos_left+this_prev_width,0, _opt.clickScrollTime); }else if(this_index==0){ myScroll.scrollTo(-this_pos_left,0, _opt.clickScrollTime); }else if(this_index==_obj_li.length-2){ myScroll.scrollBy(this_off_right-_wrapper_off_right-this_width,0, _opt.clickScrollTime); }else if(this_index==_obj_li.length-1){ myScroll.scrollBy(this_off_right-_wrapper_off_right,0, _opt.clickScrollTime); }else{ if(this_off_left-_wrapper_off_left-(this_width*_opt.fingerClick)<duibi){ myScroll.scrollTo(-this_pos_left+this_prev_width+(this_width*_opt.fingerClick),0, _opt.clickScrollTime); }else if(this_off_right-_wrapper_off_right-(this_width*_opt.fingerClick)<duibi){ myScroll.scrollBy(this_off_right-this_next_width-_wrapper_off_right-(this_width*_opt.fingerClick),0, _opt.clickScrollTime); } } }else{ if(this_index==1){ myScroll.scrollTo(-this_pos_left+this_prev_width,0, _opt.clickScrollTime); }else if(this_index==_obj_li.length-1){ if(this_off_right-_wrapper_off_right>1||this_off_right-_wrapper_off_right<-1){ myScroll.scrollBy(this_off_right-_wrapper_off_right,0, _opt.clickScrollTime); } }else{ if(this_off_left-_wrapper_off_left<duibi){ myScroll.scrollTo(-this_pos_left+this_prev_width,0, _opt.clickScrollTime); }else if(this_off_right-_wrapper_off_right<duibi){ myScroll.scrollBy(this_off_right-this_next_width-_wrapper_off_right,0, _opt.clickScrollTime); } } } } $this_obj.addClass(_opt.className).siblings('li').removeClass(_opt.className); _opt.endClickScroll.call(this,$this_obj); } }); }; })(jQuery);

截图:

js实现移动端导航点击自动滑动效果

提供demo地址:

更多关于滑动效果的专题,请点击下方链接查看:

javascript滑动操作汇总

jquery滑动操作汇总

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