Get image real height, width using javascript

• var image_src = $(‘#image_id’).attr(“src”);
• var newImg = new Image();
• newImg.src = image_src;
• var real_hight = newImg.height;
• var real_width = newImg.width;

Stop Browser back – button to reload previously loaded page in JAVA

Include following code in head tag :

<%
//BROWSER BACK – BUTTON SHOULD NOT RELOAD PREVIOSLY LOADED PAGE CODE : START
response.setHeader(“Cache-Control”,”no-cache”); //Forces caches to obtain a new copy of the page from the origin server
response.setHeader(“Cache-Control”,”no-store”); //Directs caches not to store the page under any circumstance
response.setDateHeader(“Expires”, 0); //Causes the proxy cache to see the page as “stale”
response.setHeader(“Pragma”,”no-cache”); //HTTP 1.0 backward compatibility
//BROWSER BACK – BUTTON SHOULD NOT RELOAD PREVIOSLY LOADED PAGE CODE : END
%>

Add 7 days ahead from current day in mysql query

insert into table_name(column_name) values(DATE_ADD(NOW(),
INTERVAL 7 DAY));

Concat mysql result with comma separator

SELECT GROUP_CONCAT(distinct column_name SEPARATOR  ‘,’)  FROM table_name