js实现移动端导航点击自动滑动效果

本文实例为大家分享了js实现移动端导航点击滑动效果的具体代码,供大家参考,具体内容如下

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:

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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