Gunakan JS asli untuk melaksanakan kemahiran effects_javascript lapisan pop timbul

创建遮罩层

复制代码 代码如下:

  _createCover: function() {
      var newMask = document.createElement("div");
      newMask.id = this._mark;
      newMask.style.position = "mutlak";
      newMask.style.zIndex = "100";
      _scrollWidth = Math.max(document.body.scrollWidth,document.documentElement.scrollWidth);
      _scrollHeight = Math.max(document.body.scrollHeight,document.documentElement.scrollHeight);
      newMask.style.width = _scrollWidth "px";
      newMask.style.height = _scrollHeight "px";
      newMask.style.top = "0px";
      newMask.style.left = "0px";
      newMask.style.background = "#000";
      newMask.style.filter = "alpha(opacity=50)";
      newMask.style.opacity = "0.50";
      newMask.style.display = 'tiada';
      document.body.appendChild(newMask);
      ini._cover = newMask;
  }

新建弹出层

复制代码 代码如下:

  _createFloater: function(html) {
      var newDiv = document.createElement("div");
      newDiv.id = this._id;
      newDiv.style.position = "mutlak";
      newDiv.style.zIndex = "9999";
      newDivWidth = 400;
      newDivHeight = 200;
      newDiv.style.width = newDivWidth "px";
      newDiv.style.height = newDivHeight "px";
      newDiv.style.top = (document.body.scrollTop document.body.clientHeight/2 - newDivHeight/2) "px";
      newDiv.style.left = (document.body.scrollLeft document.body.clientWidth/2 - newDivWidth/2) "px";
      newDiv.style.padding = "5px";
      newDiv.style.display = 'tiada';
      newDiv.innerHTML = html;
      document.body.appendChild(newDiv);
      this._floater = newDiv;
  }

调节弹层位置

复制代码 代码如下:

     addjustPosition: function() {
         this._floater.style.top = (document.body.scrollTop document.body.clientHeight/2 - newDivHeight/2) "px";
         this._floater.style.left = (document.body.scrollLeft document.body.clientWidth/2 - newDivWidth/2) "px";
     }

屏幕滚动事件时调整位置

复制代码 代码如下:

this._fS = BindAsEventListener(this, this.addjustPosition);
addEventHandler(tetingkap, "scroll", this._fS);
// 隐藏后需
removeEventHandler(tetingkap, "tatal", ini._fS);

完整代码

复制代码 代码如下:

 var Floater = (fungsi(){
 var me = Class.create();
 me.prototaip = {
     mulakan: fungsi(pilihan) {
         this._fS = BindAsEventListener(this, this.addjustPosition);
         this.setOptions(options);
     },
     setOptions: function(options) {
         this.options = pilihan || {};
         this._id = options.id;
         ini._mark = 'tanda';
     },
     tunjukkan: fungsi(html, pilihan) {
         pilihan = pilihan || {};
         jika(!ini._cover){
             this._createCover();
         }
         jika(!ini._floater){
             this._createFloater(html);
         }
         if(options.saveOpt){
             this._saveOption = options.saveOpt;
             this.bindSaveEvent();
         }
         this._bindScrollEvent();
         this.adjustPosition();
         this._floater.style.display = '';
         this._cover.style.display = '';
         this.isShow = benar;
     },
     sisipkan: function(html,opts,att){
         var _e = document.createElement("div"), _t;
         _e.innerHTML = html;
         untuk(var k dalam opts){
             _e[k] = opts[k];
         }
         _t = this._floater.querySelector('[' att ']');
         jika(_t){
             _t.appendChild(_e);
         }
     },
     getFloater: function(){
         jika(ini._floater){
             pulangkan ini._floater;
         }
     },
     //遮罩层
     _createCover: function() {
         var newMask = document.createElement("div");
         newMask.id = this._mark;
         newMask.style.position = "mutlak";
         newMask.style.zIndex = "100";
         _scrollWidth = Math.max(document.body.scrollWidth,document.documentElement.scrollWidth);
         _scrollHeight = Math.max(document.body.scrollHeight,document.documentElement.scrollHeight);
         newMask.style.width = _scrollWidth "px";
         newMask.style.height = _scrollHeight "px";
         newMask.style.top = "0px";
         newMask.style.left = "0px";
         newMask.style.background = "#000";
         newMask.style.filter = "alpha(opacity=50)";
         newMask.style.opacity = "0.50";
         newMask.style.display = 'tiada';
         document.body.appendChild(newMask);
         ini._cover = newMask;
     },
     //新弹出层
     _createFloater: function(html) {
         var newDiv = document.createElement("div");
         newDiv.id = this._id;
         newDiv.style.position = "mutlak";
         newDiv.style.zIndex = "9999";
         newDivWidth = 400;
         newDivHeight = 200;
         newDiv.style.width = newDivWidth "px";
         newDiv.style.height = newDivHeight "px";
         newDiv.style.top = (document.body.scrollTop document.body.clientHeight/2 - newDivHeight/2) "px";
         newDiv.style.left = (document.body.scrollLeft document.body.clientWidth/2 - newDivWidth/2) "px";
         newDiv.style.padding = "5px";
         newDiv.style.display = 'tiada';
         newDiv.innerHTML = html;
         document.body.appendChild(newDiv);
         this._floater = newDiv;
     },
     //弹出层滚动居中
     addjustPosition: function() {
         this._floater.style.top = (document.body.scrollTop document.body.clientHeight/2 - newDivHeight/2) "px";
         this._floater.style.left = (document.body.scrollLeft document.body.clientWidth/2 - newDivWidth/2) "px";
     },
     bindSaveEvent: function() {
         this._saveElem = this._floater.querySelector('[' this._saveOption.elem ']');
         jika(ini._saveElem){
             addEventHandler(this._saveElem, "click", this._saveOption.handler);
         }
     },
     _bindScrollEvent: function() {
         addEventHandler(tetingkap, "scroll", this._fS);
     },
     sembunyikan: function() {
         this.isShow = palsu;
         this.destory();
     },
     destory: function() {
         removeEventHandler(tetingkap, "tatal", ini._fS);
         jika(ini._saveElem){
             removeEventHandler(this._saveElem, "click", this._saveOption.handler);
         }
         jika (ini._cover){
             document.body.removeChild(this._cover);
         }
         jika (ini._floater){
             document.body.removeChild(this._floater);
         }
         ini._cover = null;
         this._floater = null;
     }
 };
 pulangkan saya;
 })();