This section's code is JavaScript, and we will be using the jQuery JavaScript library. An understanding of basic JavaScript and jQuery will be essential to understanding the code examples that follow. If you are not familiar with jQuery, you can find learning resources at jQuery.com.
![country flag](/images/countries/us.png)
![country flag](/images/countries/gb.png)
![country flag](/images/countries/india.png)
![country flag](/images/countries/germany.png)
![country flag](/images/countries/france.png)
![country flag](/images/countries/canada.png)
![country flag](/images/countries/russia.png)
![country flag](/images/countries/spain.png)
![country flag](/images/countries/brazil.png)
![country flag](/images/countries/australia.png)
![country flag](/images/countries/argentina.png)
![country flag](/images/countries/austria.png)
![country flag](/images/countries/belgium.png)
![country flag](https://cdn.packtpub.com/flag/004da5c4-583f-4e69-a0a8-0e999f350f90_128px-Flag_of_Bulgaria.png)
![country flag](/images/countries/chile.png)
![country flag](/images/countries/colombia.png)
![country flag](/images/countries/cyprus.png)
![country flag](/images/countries/czech.png)
![country flag](/images/countries/denmark.png)
![country flag](/images/countries/ecuador.png)
![country flag](/images/countries/egypt.png)
![country flag](/images/countries/estonia.png)
![country flag](/images/countries/finland.png)
![country flag](/images/countries/greece.png)
![country flag](/images/countries/hungary.png)
![country flag](/images/countries/indonesia.png)
![country flag](/images/countries/ireland.png)
![country flag](/images/countries/italy.png)
![country flag](/images/countries/japan.png)
![country flag](/images/countries/latvia.png)
![country flag](/images/countries/lithuania.png)
![country flag](/images/countries/lux.png)
![country flag](/images/countries/malaysia.png)
![country flag](/images/countries/malta.png)
![country flag](/images/countries/mexico.png)
![country flag](/images/countries/netherlands.png)
![country flag](/images/countries/newzealand.png)
![country flag](/images/countries/norway.png)
![country flag](/images/countries/philippines.png)
![country flag](/images/countries/poland.png)
![country flag](/images/countries/portugal.png)
![country flag](/images/countries/romania.png)
![country flag](/images/countries/singapore.png)
![country flag](/images/countries/slovakia.png)
![country flag](/images/countries/slovenia.png)
![country flag](/images/countries/southafrica.png)
![country flag](/images/countries/southkorea.png)
![country flag](/images/countries/sweden.png)
![country flag](/images/countries/switzerland.png)
![country flag](/images/countries/taiwan.png)
![country flag](/images/countries/thailand.png)
![country flag](/images/countries/turkey.png)
![country flag](/images/countries/ukraine.png)