JS实现slide文字框缩放伸展效果代码

2019-11-20 11:20:39

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本文实例讲述了JS实现slide文字框缩放伸展效果代码。分享给大家供大家参考，具体如下：

这里介绍的slide文字框缩放伸展效果，自己闲来无事写的，不是太好，可能在兼容性方面还需努力，展开速度方面，IE8和火狐的展开速度不一样，火狐下更快一些，至今没找到原因，也请JS高人指点江山。

运行效果截图如下：

在线演示地址如下：

http://demo.VeVB.COm/js/2015/js-slide-txt-dlg-show-codes/

具体代码如下：

<!DOCTYPE html><html><head><meta http-equiv="content" content="text/html charset=gb2312"><title>slide文字框缩放伸展效果</title><style type="text/css">*{margin:0; padding:0;}ul{list-style:none;}.box{width:300px; margin:10px; border:1px solid #ccc; overflow:hidden; position:relative; font-size:12px;}.oHx{height:30px; background:#eee; line-height:30px; font-size:14px; text-indent:14px; cursor:pointer;}.fold{position:absolute; top:9px; right:12px;}.box_content{line-height:18px; overflow:hidden; display:none;}</style><script type="text/javascript"> function getElementsByClassName(className,id,tag){    tag = tag || "*";    if(id){     var id = typeof id == "string" ? $(id) : id;    }else{     var id = document.body;    }    var els = id.getElementsByTagName(tag),arr = [];    for(var i=0,n=els.length;i<n;i++){     for(var j=0,k=els[i].className.split(" "),l=k.length;j<l;j++){      if(k[j]==className){       arr.push(els[i]);       break;      }     }    }    return arr;   };   function Slide(slideClass,slideBtn,slideCon,slideSpeed) {    this.oSlides = getElementsByClassName(slideClass);    this.oTimer = null;    this.slideBtn = slideBtn;    this.slideCon = slideCon;    this.slideSpeed = slideSpeed;   }   Slide.prototype = {    oTimer:null,    _init:function (){     this._slideEvent();    },    _slideEvent:function (){     var This = this;     for(var i = 0,n=This.oSlides.length;i<n;i++){      (function(n){       var oSlide = This.oSlides[n];       var oSlideBtn = getElementsByClassName(This.slideBtn,oSlide)[0];       var oSlideCon = getElementsByClassName(This.slideCon,oSlide)[0];       oSlideBtn.onclick = function (){        if(oSlideCon.style.display == "block" && This.oTimer == null){         This._slideClose(oSlideCon);        }else if(!(oSlideCon.style.display == "block" ) && This.oTimer == null){         This._slideOpen(oSlideCon);        }       }      })(i)     }    },    _slideOpen:function (slideCon){     var This = this;     slideCon.style.display = "block";     slideCon.style.height = "auto";     var slideHeight = slideCon.offsetHeight;     slideCon.style.height = 0 + "px";     This.oTimer = setInterval(function (){      if(slideCon.offsetHeight < slideHeight){       slideCon.style.height = slideCon.offsetHeight + 2 + "px";      }else{       clearInterval(This.oTimer);       This.oTimer = null;      }     },This.slideSpeed);    },    _slideClose:function (slideCon){     var This = this;     This.oTimer = setInterval(function (){      if(slideCon.offsetHeight <= 0){       clearInterval(This.oTimer);       slideCon.style.display = "none";       This.oTimer = null;      }else{       slideCon.style.height =slideCon.offsetHeight - 2 + "px";      }     },This.slideSpeed);    }   }  </script> </head> <body>  <div class="box">    <div class="oHx slide">收缩2</div>    <div class="box_content">    <ul class="uft" style="padding:10px;">      <li><a href="#" target="_blank">scscms V1.0 阳光企业网站系统</a></li>  <li><a href="#" target="_blank">24点，VC++游戏源码</a></li>  <li><a href="#" target="_blank">可记录图像的C#数据库记录单程序</a></li>  <li><a href="#" target="_blank">jQuery 1.4 参考指南的实例源代码</a></li>    </ul>    </div>  </div>  <div class="box">    <div class="oHx slide">收缩3</div>    <div class="box_content">    <ul class="uft"style="padding:10px;">      <li><a href="#" target="_blank">scscms V1.0 阳光企业网站系统</a></li>  <li><a href="#" target="_blank">24点，VC++游戏源码</a></li>  <li><a href="#" target="_blank">可记录图像的C#数据库记录单程序</a></li>  <li><a href="#" target="_blank">jQuery 1.4 参考指南的实例源代码</a></li>    </ul>    </div>  </div>  <script type="text/javascript">   var mySlide = new Slide("box","slide","box_content",10);    mySlide._slideEvent();  </script> </body></html>

希望本文所述对大家JavaScript程序设计有所帮助。

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