Print all parameter name of a Javascript Function

Question

I have a javascript file in which I have defined a custom function which take some input object and perform some action.
This file is called from many files.
Now I want to priint all the params name used in this function.

May be I need to read whole file as a string and print the desired output

 function customFunction(param){
       if(param.isOK == yes){}
       if(param.hasMenu == no){}
       ..
       ..
       ..
       if(param.cancelText == "cancel"){}

    }

I want to write a program which reads this file and output all the params name. e.g.

isOK | hasMenu | ...... | CancelText ..

param is object or string??

AbdulRahman Ansari
– AbdulRahman Ansari

2015-09-19 10:21:29 +00:00
Commented Sep 19, 2015 at 10:21 — AbdulRahman Ansari
– AbdulRahman Ansari, Commented Sep 19, 2015 at 10:21

Rafaf Tahsin · Accepted Answer · 2015-09-20 07:52:39Z

2

You can use Regular Expression.

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Text.RegularExpressions;

namespace _32666940
{

    class Program
    {
        public static String str = "function customFunction(param){ " +
            "if(param.isOK == yes){}" +
            "if(param.hasMenu == no){}" +
            "if(param.cancelText == \"cancel\"){}" +    // I had to add \ before "
            "if(param[  'isOK'  ] == yes){}" +
            "if(param[\"isOK\"] == yes){}" +
            "}";
        static void Main()
        {
            //@"param\.[a-zA-Z_]+[a-zA-Z0-9_]*"
            Regex regex = new Regex(@"param\.[a-zA-Z_]+[a-zA-Z0-9_]*");
            Match match = regex.Match(str);
            while (match.Success)
            {
                Console.WriteLine(match.Value);
                match = match.NextMatch();
            }

            regex = new Regex(@"\bparam\[\s*(['""])(.+?)\1\s*]");
            match = regex.Match(str);
            while (match.Success)
            {
                Console.WriteLine(match.Value);
                match = match.NextMatch();
            }

            Console.ReadKey();

        }
    }
}

Edit: updated the code to match param['some-key']

Edit updated the code to match param["some-key"]

edited Sep 20, 2015 at 7:52

answered Sep 19, 2015 at 11:43

Rafaf Tahsin

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3 Comments

chriskelly Over a year ago

This will not get properties which are accessed using array notation: e.g. param['this-is-another-property']

Vishu238 Over a year ago

This solve my one problem. Can you please provide me the regex for situation like param['this-is-another-property']

Rafaf Tahsin Over a year ago

I've updated the code again. The code is now working in all cases. You can also have a glance here ... stackoverflow.com/questions/32676695/…

AbdulRahman Ansari · Accepted Answer · 2015-09-19 10:33:46Z

0

If param is object, then you can use jQuery each() method. $.each() is an object iterator utility.

You can loop through this object using each() method as following

$.each( param, function( key, value ) {
     console.log(value);
    //Add your logic as per requirement
});

It will print all the values(in console) available in the param object.

Ref: jQuery each()

answered Sep 19, 2015 at 10:33

AbdulRahman Ansari

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1 Comment

Vishu238 Over a year ago

In this way I need to pass all the param's during function call.. This is the main issue .. I have to calculate the number of parameter that I am supporting in this function .. It is around 1000 . I can not pass all the params at a time.. Different combinations of param are passed from different file

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