how to make single function here used two time

In this code :

if (!parms.script) { // no script... load filename
            execscript(parms, function (data){
                var text={'result':'success', 'response':data };
                if(typeof(data)!='object') {
                    try {
                        text.response=JSON.parse(text.respon开发者_开发百科se);
                    } catch(e) {
                        text={'result':'success','response':data};
                    }
                }
                responsehttp.end(JSON.stringify(text));

            });
    } else {
        //parameterised input will replace in script
        if(query.paraminput!=undefined) {
            var paraminput=qs.parse(query.paraminput);
            parms=merge_options(parms, paraminput);
        }
        execscript(parms, function (data){
            var text={'result':'success', 'response':data };
            if(typeof(data)!='object') {
                try {
                    text.response=JSON.parse(text.response);
                } catch(e) {
                    text={'result':'success','response':data};
                }
            }
            responsehttp.end(JSON.stringify(text));

        });
    }

in execscript callback it is called two times , i want to make a single function for executing both call back in if and else .

how can i achieve this .

i tried making seperate function but responsehttp undefinded error camed.

The problem is (I suspect) is that you had your common function declared outside the context of your http response handler and, therefore, responsehttp wasn't defined. Instead create it as a closure function inside your outer function's scope:

function someCallbackYouDontShowInYourQuestion(req, responsehttp) {
  // Declare your callback as a closure inside this function, so it
  // captures responsehttp state
  function callback(data) {
    var text={'result':'success', 'response':data };
    if(typeof(data)!='object') {
      try {
        text.response=JSON.parse(text.response);
      } catch(e) {
        text={'result':'success','response':data};
      }
    }
    responsehttp.end(JSON.stringify(text));

  }

  if (!parms.script) { // no script... load filename
    execscript(parms, callback);
  } else {
    //parameterised input will replace in script
    if(query.paraminput!=undefined) {
      var paraminput=qs.parse(query.paraminput);
      parms=merge_options(parms, paraminput);
    }
    execscript(parms, callback);
  }
}

callback = function (data){
            var text={'result':'success', 'response':data };
            if(typeof(data)!='object') {
                try {
                    text.response=JSON.parse(text.response);
                } catch(e) {
                    text={'result':'success','response':data};
                }
            }
            responsehttp.end(JSON.stringify(text));

        }

execscript(parms, callback);