let names = ["Jack", "Jecci", "Ram", "Tom"];
let upperCaseNames = [];
for(let i=0, totalNames = names.length; i< totalNames ; i= i +1) {
    upperCaseNames = names[i].toUpperCase();
}

let names = ["Jack", "Jecci", "Ram", "Tom"];
let upperCaseNames = names.map(name => name.toUpperCase());

function print(name) {
   console.log(name);
}
let names = ["Jack", "Jecci", "Ram", "Tom"];
for(let i=0, totalNames = names.length; i< totalNames ; i= i +1) {
    print(names[i])
}

function print(name) {
   console.log(name);
}
let names = ["Jack", "Jecci", "Ram", "Tom"];
names.forEach(name=> print(name));

//  اگر صرفا چاپ در کنسول مد نظر هست

let names = ["Jack", "Jecci", "Ram", "Tom"];
names.forEach(name=> console.log(name));

function isOdd(n) {
   return n %2;
}
let numbers = [1,2,3,4,5];
let odd = [];
for(let i=0, total = numbers.length; i< total ; i= i +1) {
   let number = numbers[i];
   if( isOdd(number) ) {
      odd.push(number);
   }
}

let numbers = [1,2,3,4,5, 6, 7]
let odd = numbers.filter(n => n%2);

let numbers = [1,2,3,4,5]
let result = 0;
for(let i=0, total = numbers.length; i< total ; i= i +1) {
   result = result + numbers[i];
}

let numbers = [1,2,3,4,5,6,7];
function sum(accumulator, currentValue){
   return accumulator + currentValue;
}
let initialVal = 0;
let result = numbers.reduce(sum, initialVal);

// یا بصورت زیر کد را خلاصه نمود

let numbers = [1,2,3,4,5,6,7, 10];
let result = numbers.reduce((acc, val)=> acc+val, 0);

let names = ["ram",, "rahul", "raj", "rahul"];
for(let i=0, totalNames = names.length; i< totalNames ; i= i +1) {
   if(names[i] === "rahul") {
     console.log(" found rahul");
     break; 
   }
}

let names = ["ram",, "rahul", "raj", "rahul"];
let isRahulPresent = names.some(name => name==="rahul");
if(isRahulPresent) {
  console.log("found rahul"); 
}

let numbers = [1,2,3,4,5, 0];
for(let i=0, total = numbers.length; i< total ; i= i +1) {
    if(numbers[i] <= 0) {
      console.log("0 present in array");
      break;
     }
}

let numbers = [1,2,3,4,5,0];
let isZeroFree = numbers.every(e => e > 0);
if(!isZeroFree) {
    console.log("0 present in array");
}

• خوانایی بهتر
• فهم راحت
• خطایابی آسان‌تر

dotnet tool install -g dotnet-ignore

dotnet tool list -g

dotnet tool update -g dotnet-ignore

dotnet tool uninstall -g dotnet-ignore

<PropertyGroup>
    <PackAsTool>true</PackAsTool>
    <ToolCommandName>dotnet-mytool</ToolCommandName>
    <PackageOutputPath>./nupkg</PackageOutputPath>
</PropertyGroup>

dotnet tool install --global --add-source ./nupkg globaltools

dotnet-mytool

https://www.nuget.org/packages/McMaster.Extensions.CommandLineUtils

[Command(Description="Add a new note")]
    public class NewNote
    {
        [Required]
        [Option(Description="title of note")]
        public string Title{ get; set; }

        [Option(Description="content of note")]
        public string Body{ get; set; }
    }

[Command(Description="Add a new note")]
    public class NewNote:BaseClass
    {
        [Required]
        [Option(Description="title of note")]
        public string Title{ get; set; }

        [Option(Description="content of note")]
        public string Body{ get; set; }

        public void OnExecute(IConsole console)
        {

            var dir = GetBaseDirectory();
            if(!Directory.Exists(dir))
            {
                Directory.CreateDirectory(dir);
            }
            var filePath = Path.Combine(dir, Title + ".txt");
            File.WriteAllText(filePath, Body);
            console.WriteLine("the note is saved");
        }
    }

public class BaseClass
    {
        protected string GetBaseDirectory(){
            var baseDirectory = Environment.CurrentDirectory;
            return (Path.Combine(baseDirectory, "notes"));
        }
    }

public class List:BaseClass
    {
        [Option(Description="search a phrase in notes title")]
        public string Grep{ get; set; }
        public void OnExecute(IConsole console)
        {
            try
            {
                var baseDirectory = GetBaseDirectory();

                var dir = new DirectoryInfo(baseDirectory);
                var files = dir.GetFiles();
                foreach(var file in files)
                {
                    if(!String.IsNullOrEmpty(Grep) && !file.Name.Contains(Grep))
                        continue;

                    console.WriteLine(Path.GetFileNameWithoutExtension(file.Name));
                }
            }
            catch (Exception e)
            {
                console.WriteLine(e.Message);
            }
        }
    }

[Command(Description="show contnet of note")]
    public class Show:BaseClass
    {
        [Required]
        [Option(Description="title of note")]
        public string Title{ get; set; }


        public void OnExecute(IConsole console){
            var baseDirectory = GetBaseDirectory();
            var file = Path.Combine(baseDirectory, Title+".txt");

            if(!File.Exists(file))
            {
                console.WriteLine("The Note NotFound...");
                return;
            }
            console.WriteLine(File.ReadAllText(file));

        }
    }

    [Command(Description="An Immediate Note Saver")]
    [Subcommand(typeof(NewNote),typeof(List),typeof(Show))]
    class Program
    {
        static int Main(string[] args)
        {
            return CommandLineApplication.Execute<Program>(args);
        }

        public int OnExecute(CommandLineApplication app, IConsole console)
        {
            console.WriteLine("You must specify a subcommand.");
            console.WriteLine();
            app.ShowHelp();
            return 1;
        }
    }

        static int Main(string[] args)
        {
            return CommandLineApplication.Execute<Program>(args);
        }

PS D:\projects\Samples\globaltools> dotnet-notes new-note -t "sample1" -b "this is body"
the note is saved
PS D:\projects\Samples\globaltools> dotnet-notes new-note -t "test1" -b "this is body of another note"
the note is saved
PS D:\projects\Samples\globaltools> dotnet-notes list
sample1
test1
PS D:\projects\Samples\globaltools> dotnet-notes list -g sa
sample1
PS D:\projects\Samples\globaltools> dotnet-notes show -t sample1
this is body

>db.COLLECTION_NAME.find().limit(NUMBER)

{ "_id" : ObjectId(5983548781331adf45ec5), "title":"MongoDB Overview"}
{ "_id" : ObjectId(5983548781331adf45ec6), "title":"NoSQL Overview"}
{ "_id" : ObjectId(5983548781331adf45ec7), "title":"Tutorials Point Overview"}

>db.mycol.find({},{"title":1,_id:0}).limit(2)
{"title":"MongoDB Overview"}
{"title":"NoSQL Overview"}
>

>db.COLLECTION_NAME.find().limit(NUMBER).skip(NUMBER)

>db.mycol.find({},{"title":1,_id:0}).limit(1).skip(1)
{"title":"NoSQL Overview"}
>

>db.COLLECTION_NAME.find().sort({KEY:1})

{ "_id" : ObjectId(5983548781331adf45ec5), "title":"MongoDB Overview"}
{ "_id" : ObjectId(5983548781331adf45ec6), "title":"NoSQL Overview"}
{ "_id" : ObjectId(5983548781331adf45ec7), "title":"Tutorials Point Overview"}

>db.mycol.find({},{"title":1,_id:0}).sort({"title":-1})
{"title":"Tutorials Point Overview"}
{"title":"NoSQL Overview"}
{"title":"MongoDB Overview"}
>

jQuery.fn.myPlugin = function() {
//محتویات پلاگین را اینجا می‌نویسیم
};

(function( $ ) {
  $.fn.myPlugin = function() {
  //محتویات پلاگین را اینجا می‌نویسیم
    };
})( jQuery );

(function($){
    $.fn.underline= function() {
        this.hover(function(){
            $(this).css( { text-decoration : underline })
        }, function(){
            $(this).css( { text-decoration : none } )
        });
    };
})(jQuery);
 
$("p").underline();

(function( $ ){

  $.fn.maxHeight = function() {
  
    var max = 0;

    this.each(function() {
      max = Math.max( max, $(this).height() );
    });

    return max;
  };
})( jQuery );

var tallest = $('div').maxHeight(); // بیشترین ارتفاع عنصر را برمی گرداند

(function( $ ){

  $.fn.lockDimensions = function( type ) {  

    return this.each(function() {

      var $this = $(this);

      if ( !type || type == 'width' ) {
        $this.width( $this.width() );
      }

      if ( !type || type == 'height' ) {
        $this.height( $this.height() );
      }

    });

  };
})( jQuery );

$('div').lockDimensions('width').css('color', 'red');

(function( $ ){

  $.fn.tooltip = function( options ) {  

    var settings = $.extend( {
      'location'         : 'top',
      'background-color' : 'blue'
    }, options);

    return this.each(function() {        

      // Tooltip plugin code here

    });

  };
})( jQuery );

$('div').tooltip({
  'location' : 'left'
});

 function prettyDate(time){
    var date = new Date(time || ""),
      diff = (((new Date()).getTime() - date.getTime()) / 1000),
      day_diff = Math.floor(diff / 86400);
 
    if ( isNaN(day_diff) || day_diff < 0 || day_diff >= 31 )
      return;
 
    return day_diff == 0 && (
        diff < 60 && "just now" ||
        diff < 120 && "1 minute ago" ||
        diff < 3600 && Math.floor( diff / 60 ) +
          " minutes ago" ||
        diff < 7200 && "1 hour ago" ||
        diff < 86400 && Math.floor( diff / 3600 ) +
          " hours ago") ||
      day_diff == 1 && "Yesterday" ||
      day_diff < 7 && day_diff + " days ago" ||
      day_diff < 31 && Math.ceil( day_diff / 7 ) +
        " weeks ago";
  }

function prettyDate(now, time){
  var date = new Date(time || ""),
    diff = (((new Date(now)).getTime() - date.getTime()) / 1000),
    day_diff = Math.floor(diff / 86400);
 
  if ( isNaN(day_diff) || day_diff < 0 || day_diff >= 31 )
    return;
 
  return day_diff == 0 && (
      diff < 60 && "just now" ||
      diff < 120 && "1 minute ago" ||
      diff < 3600 && Math.floor( diff / 60 ) +
        " minutes ago" ||
      diff < 7200 && "1 hour ago" ||
      diff < 86400 && Math.floor( diff / 3600 ) +
        " hours ago") ||
    day_diff == 1 && "Yesterday" ||
    day_diff < 7 && day_diff + " days ago" ||
    day_diff < 31 && Math.ceil( day_diff / 7 ) +
      " weeks ago";
}

<!doctype html>
<html>
<head>
  <meta charset="utf-8">
  <title>Refactored date examples</title>
  <script src="prettydate.js"></script>
  <script>
  function test(then, expected) {
    results.total++;
    var result = prettyDate("2013/01/28 22:25:00", then);
    if (result !== expected) {
      results.bad++;
      console.log("Expected " + expected +
        ", but was " + result);
    }
  }
  var results = {
    total: 0,
    bad: 0
  };
  test("2013/01/28 22:24:30", "just now");
  test("2013/01/28 22:23:30", "1 minute ago");
  test("2013/01/28 21:23:30", "1 hour ago");
  test("2013/01/27 22:23:30", "Yesterday");
  test("2013/01/26 22:23:30", "2 days ago");
  test("2012/01/26 22:23:30", undefined);
  console.log("Of " + results.total + " tests, " +
    results.bad + " failed, " +
    (results.total - results.bad) + " passed.");
  </script>
</head>
<body>
 
</body>
</html>

(function ($, undefined) {

    $.fn.extend({
        'rtlColResizable': function (options) {
            var defaults = {
                //Default values for the plugin's options here
            };

            options = $.extend(defaults, options);

            var isMouseButtonPressed;
            var $resizingElement = undefined;
            var resizingElementStartWidth;
            var mouseCursorStartX;
            var isCursorInResizingPosition;

            var addResizingCursorStyle = function ($element) {
                $element.css({
                    'cursor': 'col-resize',
                    'user-select': 'none',
                    '-o-user-select': 'none',
                    '-ms-user-select': 'none',
                    '-moz-user-select': 'none',
                    '-khtml-user-select': 'none',
                    '-webkit-user-select': 'none',
                });
            };

            var removeResizingCursorStyle = function ($element) {
                $element.css({
                    'cursor': 'default',
                    'user-select': 'text',
                    '-o-user-select': 'text',
                    '-ms-user-select': 'text',
                    '-moz-user-select': 'text',
                    '-khtml-user-select': 'text',
                    '-webkit-user-select': 'text',
                });
            };

            var canResize = function (e) {
                return (e.offsetX || e.clientX - $(e.target).offset().left) < 10;
            };

            return this.each(function () {

                var opts = options;
                var tableColumns = $(this).find('th');

                tableColumns.filter(':not(:last-child)').mousedown(function (e) {

                    $resizingElement = $(this);
                    isMouseButtonPressed = true;
                    mouseCursorStartX = e.pageX;
                    resizingElementStartWidth = $resizingElement.width();

                });

                tableColumns.mousemove(function (e) {

                    if (canResize(e)) {
                        addResizingCursorStyle($(e.target));
                        isCursorInResizingPosition = true;

                    } else if (!isMouseButtonPressed) {
                        removeResizingCursorStyle($(e.target));
                        isCursorInResizingPosition = false;
                    }

                    if (isCursorInResizingPosition && isMouseButtonPressed) {

                        $resizingElement.width(resizingElementStartWidth + (mouseCursorStartX - e.pageX));
                    }

                });

                $(document).mouseup(function () {
                    if (isMouseButtonPressed) {
                        removeResizingCursorStyle($resizingElement);
                        isMouseButtonPressed = false;
                    }

                });

            });
        }
    });

})(jQuery);