原生javascript实现图片按钮切换
先给大家看下效果展示图
以下为详细代码：
\\s|$)");
for (i = 0, j = 0; i < elsLen; i++) {
if ( pattern.test(els[i].className) ) {
classElements[j] = els[i];
j++;
}
}
return classElements;
},
getCss:function(node,value)
{
return node.currentStyle?node.currentStyle[value]:getComputedStyle(node,null)[value];
},
setCss:function(node,val){
for(var v in val){
node.style.cssText += ';'+ v +':'+val[v];
}
},
moveFn:function(node,value,targetValue,callback){
var _that = this;
clearInterval(this.timer);
this.timer = setInterval(function()
{
var val = parseFloat(_that.getCss(node,value));
var speed = ( targetValue- val )/8;
speed = speed>0?Math.ceil(speed):Math.floor(speed);
if(speed ==0)
{
clearInterval(_that.timer);
callback&&callback();
}
else
{
node.style[value] = ( val + speed ) +'px';
}
},20);
},
picChange:function(){
this.moveFn(this.oUl,'marginLeft',-this.nIndex*this.nSwitchWidth);
},
cancelBubble:function(e){
e.stopPropagation?e.stopPropagation():e.cancelBubble = true;
},
btnIsShow:function(){
this.setCss(this.oBtnNext,{'display':'block'});
this.setCss(this.oBtnPrev,{'display':'block'});
if( this.nIndex == 0 ) this.setCss(this.oBtnPrev,{'display':'none'});
if( this.nIndex ==(this.nScollLen-1) ) this.setCss(this.oBtnNext,{'display':'none'});
},
btnPrev:function(){
var _that = this;
this.oBtnPrev.onclick = function(e){
var e = e || window.event;
_that.cancelBubble(e);
if(_that.nIndex != 0 ) {
_that.nIndex--;
_that.picChange();
_that.btnIsShow();
}
}
},
btnNext:function(){
var _that = this;
this.oBtnNext.onclick = function(e){
var e = e || window.event;
_that.cancelBubble(e);
if(_that.nIndex != (_that.nScollLen-1) ) {
_that.nIndex++;
_that.picChange();
_that.btnIsShow();
}
}
},
int:function(){
//动态获取移动的宽度
var oLi = this.oUl.getElementsByTagName('li')[0],
oLi_w = oLi.offsetWidth + parseInt(this.getCss(oLi,'marginLeft')) + parseInt(this.getCss(oLi,'marginRight'));
this.nSwitchWidth = oLi_w*this.nScollCount;
//按钮显示初始化
this.btnIsShow();
//左右切换
this.btnPrev();
this.btnNext();
}
}
HTML代码：
/*
* HTML结构必需是以下：外层ID名，自己传入 如下面的：id="gy_picSwitch02" ，ID名，自己随便给
但，里面的结构必需一样，包括类名classname
<div id="gy_picSwitch02">
<span class="gy_picSwitch_prev"></span>
<span class="gy_picSwitch_next"></span>
<div class="gy_picSwitch_listWrap">
<ul>
<li><img src="images/pic01.jpg" alt=""></li>
<li><img src="images/pic02.jpg" alt=""></li>
<li><img src="images/pic03.jpg" alt=""></li>
<li><img src="images/pic04.jpg" alt=""></li>
<li><img src="images/pic05.jpg" alt=""></li>
<li><img src="images/pic06.jpg" alt=""></li>
<li><img src="images/pic07.jpg" alt=""></li>
<li><img src="images/pic08.jpg" alt=""></li>
</ul>
</div>
</div>
参数：'wrapID':'xxxx'，最外层的ID名
'scrollCount':5，滚动的数量
*
*/
//实例化
new LGY_picSwitch({'wrapID':'gy_picSwitch','scrollCount':5});
是不是很方便的功能呢，使用也很简单，这里推荐给小伙伴，希望对大家能有所帮助
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