jQuery.fn.extend({  /**   * ctrl+enter提交表單   * @param {Function} fn 操作后執(zhí)行的函數(shù)   * @param {Object} thisObj 指針作用域   */  ctrlSubmit:function(fn,thisObj){    var obj = thisObj || this;    var stat = false;    return this.each(function(){      $(this).keyup(function(event){        //只按下ctrl情況，等待enter鍵的按下        if(event.keyCode == 17){          stat = true;          //取消等待          setTimeout(function(){            stat = false;          },300);        }         if(event.keyCode == 13 && (stat || event.ctrlKey)){          fn.call(obj,event);        }       });    });  } });

$("#textarea").ctrlSubmit(function(event){  //提交代碼寫在這里});