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function Factory(type, content) {       if (this instanceof Factory) {         // 直接调用函数      return new this[type](content);    } else {         return new Factory(type, content);    }  };  // 定义一个静态方法  Factory.insertHTML = function(content) {       let div = document.createElement('div');    div.innerHTML = content;    div.style.border = '1px solid #f00';    document.getElementById('container').appendChild(div);  };  Factory.prototype = {       JAVA: function (content) {         Factory.insertHTML(content);    },    PHP: function (content) {         Factory.insertHTML(content);    },    JAVASCRIPT: function (content) {         Factory.insertHTML(content);    },    PYTHON: function (content) {         Factory.insertHTML(content);    }  };  const dataList = [    {         type: "JAVA",      content: "java培训"    },    {         type: "PHP",      content: "PHP培训"    },    {         type: "JAVASCRIPT",      content: "JAVASCRIPT培训"    },    {         type: "PYTHON",      content: "PYTHON培训"    }  ];  for (let item of dataList) {       Factory(item.type, item.content);  }

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