优化 layer 所在的 window resize 事件机制，避免事件不断叠加

src/modules/layer.js

@@ -24,7 +24,7 @@ var isLayui = window.layui && layui.define, $, win, ready = {
     return GLOBAL.layer_dir || jsPath.substring(0, jsPath.lastIndexOf('/') + 1);
   }(),
 
-  config: {}, end: {}, minIndex: 0, minLeft: [],
+  config: {}, end: {}, events: {resize: {}}, minIndex: 0, minLeft: [],
   btn: ['确定', '取消'],
 
   //五种原始层模式
@@ -445,13 +445,15 @@ Class.pt.creat = function(){
     }();
   }();
   
-  //如果是固定定位
+  // 若是固定定位，则跟随 resize 事件来自适应坐标
   if(config.fixed){
-    win.on('resize', function(){
-      that.offset();
-      (/^\d+%$/.test(config.area[0]) || /^\d+%$/.test(config.area[1])) && that.auto(times);
-      config.type == 4 && that.tips();
-    });
+    if(!ready.events.resize[that.index]){
+      ready.events.resize[that.index] = function(){
+        that.resize();
+      };
+      // 此处 resize 事件不会一直叠加，当关闭弹层时会移除该事件
+      win.on('resize', ready.events.resize[that.index]);
+    }
   }
   
   config.time <= 0 || setTimeout(function(){
@@ -473,6 +475,16 @@ Class.pt.creat = function(){
   }
 };
 
+// 当前实例的 resize 事件
+Class.pt.resize = function(){
+  var that = this;
+  var config = that.config;
+  
+  that.offset();
+  (/^\d+%$/.test(config.area[0]) || /^\d+%$/.test(config.area[1])) && that.auto(times);
+  config.type == 4 && that.tips();
+};
+
 //自适应
 Class.pt.auto = function(index){
   var that = this, config = that.config, layero = $('#'+ doms[0] + index);
@@ -1099,9 +1111,16 @@ layer.close = function(index, callback){
       layero[0].innerHTML = '';
       layero.remove();
     }
+
     typeof ready.end[index] === 'function' && ready.end[index]();
     delete ready.end[index];
     typeof callback === 'function' && callback();
+
+    // 移除 reisze 事件
+    if(ready.events.resize[index]){
+      win.off('resize', ready.events.resize[index]);
+      delete ready.events.resize[index];
+    }
   };
   
   if(layero.data('isOutAnim')){