Code analysis to achieve pop-up effect using JavaScript

This article mainly introduces the code analysis of JavaScript to achieve the pop-up effect, which has a good reference value. Let’s take a look at it with the editor below

Rendering:

Without further ado, please look at the code ：

每个弹窗的标识
var x =0;
var idzt = new Array();
var Window = function(config){
 ID不重复
 idzt[x] = "zhuti"+x; 弹窗ID
 初始化，接收参数
 this.config = {
  width : config.width || 300, 宽度
  height : config.height || 200, 高度
  buttons : config.buttons || '', 默认无按钮
  title : config.title || '标题', 标题
  content : config.content || '内容', 内容
  isMask : config.isMask == false?false:config.isMask || true, 是否遮罩
  isDrag : config.isDrag == false?false:config.isDrag || true, 是否移动
  };
 加载弹出窗口
 var w = ($(window).width()-this.config.width)/2;
 var h = ($(window).height()-this.config.height)/2;
 var nr = "<p class=&#39;zhuti&#39; id=&#39;"+idzt[x]+"&#39; bs=&#39;"+x+"&#39; style=&#39;width:"+this.config.width+"px; 
 height:"+this.config.height+"px; left:"+w+"px; top:"+h+"px;&#39;></p>";
 $("body").append(nr);
 加载弹窗标题
 var content ="<p id=&#39;title"+x+"&#39; class=&#39;title&#39; bs=&#39;"+x+"&#39;>"+this.config.title+"<p id=&#39;close"+x+"&#39; class=&#39;close&#39; bs=&#39;"+x+"&#39;>×</p></p>";
 加载弹窗内容
 var nrh = this.config.height - 75;
 content = content+"<p id=&#39;content"+x+"&#39; bs=&#39;"+x+"&#39; class=&#39;content&#39; style=&#39;width:100%; height:"+nrh+"px;&#39;>"+this.config.content+"</p>";
 加载按钮
 content = content+"<p id=&#39;btnx"+x+"&#39; bs=&#39;"+x+"&#39; class=&#39;btnx&#39;>"+this.config.buttons+"</p>";
 将标题、内容及按钮添加进窗口
 $(&#39;#&#39;+idzt[x]).html(content);
 创建遮罩层
 if(this.config.isMask)
 {
  var zz = "<p id=&#39;zz&#39;></p>";
  $("body").append(zz);
  $("#zz").css(&#39;display&#39;,&#39;block&#39;);
 }
 最大最小限制，以免移动到页面外
 var maxX = $(window).width()-this.config.width;
 var maxY = $(window).height()-this.config.height;
 var minX = 0,
  minY = 0;
 窗口移动
 if(this.config.isDrag)
 {
  鼠标移动弹出窗
  $(".title").bind("mousedown",function(e){
   var n = $(this).attr("bs"); 取标识
   使选中的到最上层
   $(".zhuti").css("z-index",3);
   $(&#39;#&#39;+idzt[n]).css("z-index",4);
   取初始坐标
   var endX = 0, 移动后X坐标
    endY = 0, 移动后Y坐标
    startX = parseInt($(&#39;#&#39;+idzt[n]).css("left")), 弹出层的初始X坐标
    startY = parseInt($(&#39;#&#39;+idzt[n]).css("top")), 弹出层的初始Y坐标
    downX = e.clientX, 鼠标按下时，鼠标的X坐标
    downY = e.clientY; 鼠标按下时，鼠标的Y坐标
   绑定鼠标移动事件
   $("body").bind("mousemove",function(es){
    endX = es.clientX - downX + startX; X坐标移动
    endY = es.clientY - downY + startY; Y坐标移动
    最大最小限制
    if(endX > maxX)
    {
     endX = maxX;
    } else if(endX < 0)
    {
     endX = 0;
    }
    if(endY > maxY)
    {
     endY = maxY;
    } else if(endY < 0)
    {
     endY = 0;
    }
    $(&#39;#&#39;+idzt[n]).css("top",endY+"px");
    $(&#39;#&#39;+idzt[n]).css("left",endX+"px");
    window.getSelection ? window.getSelection().removeAllRanges():document.selection.empty(); //取消选中文本
    });
   });
  鼠标按键抬起，释放移动事件
  $("body").bind("mouseup",function(){
   $("body").unbind("mousemove");
   });
 }
 关闭窗口
 $(".close").click(function(){
   var m = this.getAttribute("bs"); 找标识
   $(&#39;#&#39;+idzt[m]).remove(); 移除弹窗
   $(&#39;#zz&#39;).remove(); 移除遮罩 

  })
  x++; 标识增加
}

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