JavaScript date format to MySQL date format

MySQL date format:
2015-04-24
To get JavaScript date format  the same as MySQL date format:
                        var today = new Date();
                        var dd = today.getDate();
                        var mm = today.getMonth()+1; //January is 0!

                        var yyyy = today.getFullYear();
                        if(dd<10){
                            dd='0'+dd
                         }
                        if(mm<10){
                          mm='0'+mm
                         }
                        var today = yyyy+'-'+mm+'-'+dd;

jQuery prepend and append method

The prepend() method inserts specified content at the beginning of the selected elements
and append method  is to insert content at the end of the selected elements.
Example
               $blockAll = $(" <input type='button' class='block all' value='Block All Salary \> 0' />");
                $("div.ajax_list").prepend($blockAll);
                $viewAllPdf = $("<input type='button' class='viewallpdf' value='Preview All Contracts with Salary \> 0 (May take up to 5 minutes)' />");
            $("div.ajax_list").prepend($viewAllPdf);

The button  viewallpdf will come first and blockall button comes after.

MySQL query SELECT IN using PHP array

 MySQL query SELECT IN using PHP array

integers:

$query = "SELECT * FROM `$table` WHERE `$column` IN(".implode(',',$array).")";

strings:

$query = "SELECT * FROM `$table` WHERE `$column` IN('".implode("','",$array)."')";

JavaScript, remove trailing insignificant zeros after toFixed function

In JavaScript, toFixed function is used to convert a number into a string, keeping only two decimals:
For example
var num = 6.76789;
var n = num.toFixed(2);
return 6.77
var num = 6;
var n = num.toFixed(2);
 return 6.00

But How to remove trailing insignificant zeros?
We can use Number function or parseFloat function such as
 Number(num.toFixed(4)); 
or
 parseFloat(num.toFixed(4));

Click save button, parent window refresh using JavaScript

open a window in new tab in firefox:
 window.open('SITAview_form.php?sid=' + stakeholder_id + '&term=' + term + '&cid=' + course_id+'&pad_id=' + pad_id);
Now I want to refresh parent window when click save button in this window:,   window.opener.location.reload(); is used to reload parent window in JS:
        $('div.box#Contract_basic_Info input.saveButton').click(function() {
            saveBasicInfo();
            window.opener.location.reload();
        });