What is bookmarklet and how to use them (google map)

Bookmarklet is javascript code, which you can run quickly from any bookmark in your browser.

For example I want to remove search panel in google map, because I would like to print entire map




Select search panel in firebug or chrome tools

We see that parent that holds entire search panel is div with class omnibox-and-cards. Let's remove it

run in console

document.getElementById('omnibox-and-cards').style.display = 'none';




we see that search panel dissapeard. But we would like to quickly run this script.

This is simple. Add javascript: in the beginning and undefined; on the end



so in our example 
javascript: document.getElementById('omnibox-and-cards').style.display = 'none';undefined;
then add new bookmark in your browser and in url paste above script
 






then click on new bookmark and scrip will be executed!
There are many useful bookmarklets in the internet. For example jquerify if you would like to write in jquery if page doesn't have it