下面jquery插件中代码引用中的this关键字是什么？

我在网上找到了这段代码，想知道每个“this”关键字引用的是什么？这段代码有7个“This”关键字的引用，不知道每个关键字引用了什么。。我假设它引用了某个DOM元素，但无法在脑海中建立连接

(function($) {

   $.watermark = function(element, options) {
      // what does this keyword reference to
      this.options = {};

      // what does this keyword reference to
      element.data('watermark', this);

      // what does this keyword reference to
      this.init = function(element, options) {         

      // what does this keyword reference to
         this.options = $.extend({}, $.watermark.defaultOptions, options); 

         //Manipulate element here ...       
      };

      //Public function
      // what does this keyword reference to

      this.greet = function(name) {
         console.log('Hello, ' + name + ', welcome to Script Junkies!');
      };

      // what does this keyword reference to
      this.init(element, options);
   };

   $.fn.watermark = function(options) { //Using only one method off of $.fn  
      return this.each(function() {
         (new $.watermark($(this), options));              
      });        
   };

   $.watermark.defaultOptions = {
      class: 'watermark',
      text: 'Enter Text Here'
   }
})(jQuery);

---

它指的是该函数作为方法的对象

---

window我已将其标记为内联，如下所示：

(function($) {

   $.watermark = function(element, options) {
      // referencing the caller of plugin (which is acting like an object)
      this.options = {}; //  this.options is a property

      element.data('watermark', this); //referencing the caller of the plugin

      // referencing the caller plugin and init() is a function of the "object"  
      this.init = function(element, options) {  


      // referencing the caller of the plugin again, and it's options property
      this.options = $.extend({}, $.watermark.defaultOptions, options); 

         //Manipulate element here ...       
      };

      //Public function
      //referencing the caller plugin again, which is an object
      this.greet = function(name) {
         console.log('Hello, ' + name + ', welcome to Script Junkies!');
      };

      // referencing the caller of the plugin again 
      this.init(element, options); //calling the init function of the object
   };

   $.fn.watermark = function(options) { //Using only one method off of $.fn  
      //referencing the caller of the plugin again
      return this.each(function() {
         // representing the current element in the iteration
         (new $.watermark($(this), options));              
      });        
   };

   $.watermark.defaultOptions = {
      class: 'watermark',
      text: 'Enter Text Here'
   }
})(jQuery);

---

this=watermark对象。您还必须了解

如果通过
call（）
（function.prototype.call（））
element.data（'watermark'，this）调用函数，则可以设置此
：这不是引用元素。。。“如果这不是你的意思，这里有点不清楚你是对的，@karlandréGagnon。那是个错误。实际上我是先做的，单引号指的是调用方
。为了清晰起见，我后来更改了行话，但没有提到有没有办法找到插件的调用者？我标记为“引用插件调用者”的所有
this
关键字都是插件的调用者。我不确定我是否理解你的要求？使用以下语法调用插件：
var$caller=$（“someSelector”）$caller.somePlugin（）