将返回值绑定到特定函数

Question

遇到一些特殊问题，将不胜感激

// image Editor
function AddPic() {
    var ret=loadpic();
    console.log("retval=" + ret);
}

第二文件导入到第一文件

var retval;
function loadpic() {
  //loads pictures in canvas frames and allow user to edit
  return function doneOK() {
      return retval;
  };
}
function edit1() { retval=1;}
function edit2() { retval=2;}
function edit3() { retval=3;}
function edit4() { retval=4;}
function edit5() { retval=5;}
function edit6() { retval=6;}
//Depending on the user action different functions are called
//user can take any amount of time before clicking "OK" 
function onlclickOK() {doneOK();}

问题：当用户单击“确定”按钮时我们需要调用doneok（）函数进而将retval值返回到调用页面

这是我被感动的地方；

Answer 1

//Still there are some better ways to do. In case, this may help a little bit in calling the function to get the retval.


function loadpic() {
  //loads pictures in canvas frames and allow user to edit
  return doneOK()
}



function doneOK() {
  return retval;
};