91 lines
5.3 KiB
JavaScript
Executable File
91 lines
5.3 KiB
JavaScript
Executable File
/*
|
||
* 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:0, //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 = $(window);
|
||
var _win_width = _win.width(),_wrapper_width = _wrapper.width(),_wrapper_off_left = _wrapper.offset().left;
|
||
var _wrapper_off_right=_win_width-_wrapper_off_left-_wrapper_width;
|
||
var _obj_scroller = _wrapper.children('.scroller');
|
||
var _obj_ul = _obj_scroller.children('ul');
|
||
var _obj_li = _obj_ul.children('li');
|
||
var _scroller_w = 0;
|
||
_obj_li.css({"margin-left":"0","margin-right":"0"});
|
||
for (var i = 0; i < _obj_li.length; i++) {
|
||
_scroller_w += _obj_li[i].offsetWidth+_obj_li.length*2;
|
||
}
|
||
_obj_scroller.width(_scroller_w+_opt.scrollerWidth);
|
||
//alert( _scroller_w);
|
||
|
||
var myScroll = new IScroll('#'+_wrapper.attr('id'), {
|
||
eventPassthrough: true,
|
||
scrollX: true,
|
||
scrollY: false,
|
||
preventDefault: false
|
||
});
|
||
_init(_obj_li.eq(_opt.defaultSelect));
|
||
_obj_li.click(function(){
|
||
_init($(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); |